mars B-VHP061A-1 Series 1 Way Ceiling Cassettes

SAFETY PRECAUTIONS

It is really important you read Safety Precautions Before Operation and Installation Incorrect installation due to ignoring instructions can cause serious damage or injury. The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.

Explanation of Symbols

WARNING
This symbol indicates the possibility of personal injury or loss of life.

CAUTION
This symbol indicates the possibility of property damage or serious consequences.

WARNING
This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNING FOR PRODUCT USE

• Turn off the air conditioner and disconnect the power before performing any cleaning, installation or repairing. Failure to do so can cause electric shock.
• If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect the power. Call your dealer for instructions to avoid electric shock, fire or injury.
• Do not insert fingers, rods or other objects into the air inlet or outlet. This may cause injury, since the fan may be rotating at high speeds.
• Do not use flammable sprays such as hair spray, lacquer or paint near the unit. This may cause fire or combustion.
• Do not operate the air conditioner in places near or around combustible gases. Emitted gas may collect around the unit and cause explosion.
• Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too much exposure to water can cause electrical components to short circuit.
• Do not expose your body directly to cool air for a prolonged period of time.
• Do not allow children to play with the air conditioner. Children must be supervised around the unit at all times.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed air-conditioning units is highly recommended.

ELECTRICAL WARNINGS

• Only use the specified wire. If the wire is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• The product must be properly grounded at the time of installation, or electric shock may occur.
• For all electrical work, follow all local and national wiring standards, regulations, and the Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces from damaging the terminal. Improper electrical connections can overheat and cause fire, and may also cause shock. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close properly. If the control board cover is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up, catch fire, or cause electric shock.
• Disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electric shock.
• If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm clearances in all poles, and have a leakage current that may exceed 10mA, the residual current device (RCD) having a rated residual  operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

CLEANING AND MAINTENANCE WARNINGS

• Turn off the device and disconnect the power before cleaning. Failure to do so can cause electric shock.
• Do not clean the air conditioner with excessive amounts of water.
• Do not clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation.

CAUTION

• Turn off the air conditioner and disconnect the power if you are not going to use it for a long time.
• Turn off and unplug the unit during storms.
• Make sure that water condensation can drain unhindered from the unit.
• Do not operate the air conditioner with wet hands. This may cause electric shock.
• Do not use device for any other purpose than its intended use.
• Do not climb onto or place objects on top of the outdoor unit.
• Do not allow the air conditioner to operate for long periods of time with doors or windows open, or if the humidity is very high.

WARNING FOR USING FLAMMABLE REFRIGERANTS

• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater).
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• LEAK DETECTION SYSTEM installed. Unit must be powered except for service. For the unit with refrigerant sensor, when the refrigerant sensor detects refrigerant leakage, the indoor unit will display a error code and emit a buzzing sound, the compressor of outdoor unit will immediately stop, and the indoor fan will start running. The service life of the refrigerant sensor is 15 years. When the refrigerant sensor malfunctions, the indoor unit will display the error code “FHCC”. The refrigerant sensor can not be repaired and can only be replaced by the manufacture. It shall only be replaced with the sensor specified by the manufacture. (Applicable to the units with refrigerant sensors only)

For R454B refrigerant charge amount and minimum room area:
The machine you purchased may be one of the types in the table below. The indoor and outdoor units are designed to be used together. Please check the machine you purchased. The indoor unit should be installed at least 8.3ft/2.5m above from the floor, the height of the room cannot be less then 7.3ft/2.2m, and the minimum room area of operating or storage should be as specified in the following table:
For the units with refrigerant sensors, when the unit detects a refrigerant leak, the minimum airflow of the indoor unit is as follows:

Model	Indoor unit	Outdoor unit	Indoor Nominal air
6K	B-VHP061A-1	A-VHP06SA-1	l 580m³/h	342CFM
9K	B-VHP091A-1	A-VHP09SA-1	580m³/h	342CFM
12K	B-VHP121A-1	A-VHP12SA-1	600m³/h	353CFM
18K	B-VHP181A-1	A-VHP18SA-1	680m³/h	400CFM

	hinst[ft/m]
mc or mREL[oz/kg]	6.0~7.3/1.8~2.2	7.6/2.3	8.3/2.5	8.9/2.7	9.9/3.0
≤62.6/1.776	12/1.10
63.4/1.8	60/5.53	57/5.29	53/4.87	49/4.51	44/4.06
70.5/2.0	67/6.15	64/5.88	59/5.41	54/5.01	49/4.51
77.5/2.2	73/6.76	70/6.47	65/5.95	60/5.51	54/4.96
84.6/2.4	80/7.38	76/7.06	70/6.49	65/6.01	59/5.41
91.7/2.6	86/7.99	83/7.64	76/7.03	71/6.51	64/5.86
98.7/2.8	93/8.60	89/8.23	82/7.57	76/7.01	68/6.31
105.8/3.0	100/9.22	95/8.82	88/8.11	81/7.51	73/6.76
112.8/3.2	106/9.83	102/9.41	94/8.65	87/8.01	78/7.21
119.9/3.4	113/10.45	108/9.99	99/9.19	92/8.51	83/7.66
126.9/3.6	120/11.06	114/10.58	105/9.73	97/9.01	88/8.11
134/3.8	126/11.68	121/11.17	111/10.28	103/9.51	93/8.56
141.0/4.0	133/12.29	127/11.76	117/10.82	108/10.02	97/9.01
148.1/4.2	139/12.90	133/12.34	123/11.36	114/10.52	102/9.46
155.1/4.4	146/13.52	140/12.93	129/11.90	119/11.02	107/9.91
162.2/4.6	153/14.13	146/13.52	134/12.44	124/11.52	112/10.37
169.2/4.8	159/14.75	152/14.11	140/12.98	130/12.02	117/10.82
176.3/5.0	166/15.36	159/14.69	146/13.52	135/12.52	122/11.27
Area formula	Amin is the required minimum room area in ft2 /m2 mc is the actual refrigerant charge in the system in oz/kg mREL is the refrigerant releaseable charge in oz/kg (Applicable to the units with refrigerant sensors only) hinst is the height of the bottom of the appliance relative to the floor of the room after installation. WARNING: The minimum room area or minimum room area of conditioned space is based on releasable charge and total system refrigerant charge.

 Installation

 Installation (where refrigerant pipes are allowed)

• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification.
• Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
• That the installation of pipe-work shall be kept to a minimum.
• That pipe-work shall be protected from physical damage.
• Where refrigerant pipes shall be compliance with national gas regulations.
• That mechanical connections shall be accessible for maintenance purposes.
• Be more careful that foreign matter(oil, water,etc) does not enter the piping. Also, when storing the piping, securely seal the opening by pinching, taping, etc.
• Appliance shall be stored in a well ventilated area where the room size corresponds to the room area as specifiec for operation.
• Appliance shall be stored in a well ventilated area where the room size corresponds to the room area as specifiec for operation.
• Joints shall be tested with detection equipment with a capability of 5g/year of refrigerant or better, with the equipment in standstill and under operation or under a pressure of at least these standstill or operation conditions after installation. Detachable joints shall NOT be used in the indoor side of the unit (brazed, welded joint could be used).
• In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.

When a FLAMMABLE REFRIGERANT is used, the requirements for installation space of appliance and /or ventilation requirements are determined according to

• the mass charge amount(M) used in the appliance,
• the installation location,
• the type of ventilation of the location or of the appliance.
• piping material, pipe routing, and installation shall include protection from physical damage in operation and service, and be in compliance with national and local codes and standards, such as ASHRAE 15, IAPMO Uniform Mechanical Code, ICC International Mechanical Code, or CSA B52. All field joints shall be accessible for inspection prior to being covered or enclosed.
• that protection devices, piping, and fittings shall be protected as far as possible against adverse environmental effects, for example, the danger of water collecting and freezing in relief pipes or the accumulation of dirt and debris;
• that piping in refrigeration systems shall be so designed and installed to minimize the likelihood of hydraulic shock damaging the system;
• that steel pipes and components shall be protected against corrosion with a rustproof coating before applying any insulation;
• that precautions shall be taken to avoid excessive vibration or pulsation;
• the minimum floor area of the room shall be mentioned in the form of a table or a single figure without reference to a formula;
• after completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas and then vacuum tested prior to refrigerant charging, according to the following requirements:
• The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system can not be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side design pressure.
• The test pressure after removal of pressure source shall be maintained for at least 1h with no decrease of pressure indicated by the test gauge, with test gauge resolution not exceeding 5% of the test pressure.
• During the evacuation test, after achieving a vacuum level specified in the manual or less, the refrigeration system shall be isolated from the vacuum pump and the pressure shall not rise above 1500 microns within 10 min. The vacuum pressure level shall be specified in the manual, and shall be the lessor of 500 microns or the value required for compliance with national and local codes and standards, which may vary between residential, commercial, and industrial buildings.
  • field-made refrigerant joints indoors shall be tightness tested according to the following requirements: The test method shall have a sensitivity of 5 grams per year of refrigerant or better under a pressure of at least 0,25 times the maximum allowable pressure. No leak shall be detected.
  • Any servicing shall be performed only as recommended by the manufacturer.

Qualification of workers
Any maintenance, service and repair operations must be required qualification of the working personnel. Every working procedure that affects safety means shall only be carried out by competent persons that joined the training and achieved competence should be documented by a certificate. The training of these procedures is carried out by national training organizations or manufacturers that are accredited to teach the relevant national competency standards that may be set in legislation. All training shall follow the ANNEX HH requirements of UL 60335-2-40 4th Edition.

Examples for such working procedures are:

• breaking into the refrigerating circuit;
• opening of sealed components;
• opening of ventilated enclosures.

Information Servicing

1. Checks to the area
   Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on the system.
2. Work procedure
   Works shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.
3. General work area
   All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. work in confined sapces shall be avoided.
4. Checking for presence of refrigerant
   The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. no sparking, adequately sealed or intrinsically safe.
5. Presence of fire extinguisher
   If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry power or CO2 fire extinguisher adjacent to the charging area.
6. No ignition sources
   No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.
7. Ventilated area
   Ensure that the area is in the open or that it it adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
8. Checks to the refrigeration equipment
   Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using FLAMMABLE REFRIGERANTS:
   • the actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed;
   • the ventilation machinery and outlets are operating adequately and are not obstructed;
   • if an indirect refrigerating circuit is being used, the secondary circuits shall be checked for the presence of refrigerant; marking to the equipment continues to be visible and legible, marking and signs that are illegible shall be corrected;
   • refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials  which are inherently resistant to being corroded or are suitably protected against being so corroded.
9. Checks to electrical devices
   Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, and adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised.
   Initial safety checks shall include:
   • that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;
   • that there no live electrical components and wiring are exposed while charging, recovering or purging the system;
   • that there is continuity of earth bonding.
10. Sealed electrical components shall be replaced if it’s damage.
11. Intrinsically safe components must be replaced if it’s damage.
12. Cabling
    Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
13. Detection of flammable refrigerants
    Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch(or any other detector using a naked flame) shall not be used.
    The following leak detection methods are deemed acceptable for refrigerant systems. Electronic leak detectors may be used to detect refrigerant leaks but, in the case of FLAMMABLE REFRIGERANTS, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25 % maximum) is confirmed.
    Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
    NOTE Examples of leak detection fluids are
    • bubble method,
    • fluorescent method agents.
    • If a leak is suspected, all naked flames shall be removed/extinguished.
    • If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. See the following instructions of removal of refrigerant.
14. Removal and evacuation
    When breaking into the refrigerant circuit to make repairs – or for any other purpose conventional procedures shall be used. However, for flammable refrigerants it is important that best practice be followed, since  flammability is a consideration.
    The following procedure shall be adhered to:
    • safely remove refrigerant following local and national regulations; evacuate;
    • purge the circuit with inert gas (optional for A2L);
      evacuate (optional for A2L);
    • continuously flush or purge with inert gas when using flame to open circuit; and
    • open the circuit.
    • The refrigerant charge shall be recovered into the correct recovery cylinders if venting is not allowed by local and national codes. For appliances containing flammable refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process might need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems.
    • For appliances containing flammable refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum (optional for A2L). This process shall be repeated until no refrigerant is within thesystem (optional for A2L). When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place.
    • The outlet for the vacuum pump shall not be close to any potential ignition sources, and ventilation shall be available.
15. Charging procedures
    In addition to conventional charging procedures, the following requirements shall be followed:
    • Works shall be undertaken with appropriate tools only (In case of uncertainty, please consult the manufacturer of the tools for use with flammable refrigerants) Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.
    • Cylinders shall be kept upright.
    • Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
    • Label the system when charging is complete(if not already).
    • Extreme care shall be taken not to overfill the refrigeration system.
    • Prior to recharging the system it shall be pressure tested with oxygen free nitrogen(OFN). The system shall be leak tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.
16. Decommissioning
    Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of recovered refrigerant. It is essential that electrical power is available before the task is commenced.
    Become familiar with the equipment and its operation.
    • Isolate system electrically
    • Before attempting the procedure ensure that:
    • mechanical handling equipment is available, if required, for handling refrigerant cylinders;
    • all personal protetive equipment is available and being used correctly;
    • the recovery process is supervised at all times by a competent person; recovery equipment and cylinders conform to the appropriate standards.
    • Pump down refrigerant system, if possible.
    • If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system.
    • Make sure that cylinder is situated on the scales before recovery takes place.
    • Start the recovery machine and operate in accordance with instructions.
    • Do not overfill cylinders (no more than 80 % volume liquid charge)
    • Do not exceed the maximum working pressure of the cylinder, even temporarily.
    • When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off.
    • Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.
17. Labelling
    Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels on the equipment stating the equipment contains FLAMMABLE REFRIGERANT.
18. Recovery
    When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.
    When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i. e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible,cooled before recovery occurs.
    The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of the flammable refrigerant. If in doubt, the manufacturer should be consulted. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition.
    The recovered refrigerant shall be processed according to local legislation in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
    If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The compressor body shall not be heated by an open flame or other ignition sources to accelerate this process. When oil is drained from a system, it shall be carried out safely.
19. Transportation, marking and storage for units
    1. Transport of equipment containing flammable refrigerants
       Compliance with the transport regulations.
    2. Marking of equipment using signs
       Compliance with local regulations.
    3. Disposal of equipment using flammable refrigerants
       Compliance with national regulations.
    4. Storage of equipment/appliances
       The storage of equipment should be in accordance with the manufacturer’s instructions.
    5. Storage of packed (unsold) equipment
       Storage package protection should be constructed such that mechanical damage to the equipment inside the package will not cause a leak of the refrigerant charge. The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations.

Explanation of symbols displayed on the indoor unit or outdoor unit

UNIT SPECIFICATIONS AND FEATURES

NOTE
Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail.

Unit Parts

OPERATION INSTRUCTIONS

NOTE
To further optimize the performance of your unit, do the following:

• Keep doors and windows closed.
• Limit energy usage by using TIMER ON and TIMER OFF functions.
• Do not block air inlets or outlets.
• Regularly inspect and clean air filters.

Indoor Unit Display
The display panel has one type and the appearance of the type is shown in below.

• ” When TIMER is set.
• When the unit is on.
• Alarm indicator.
• When Wireless Control feature is activated.
• When pre-heating/defrost feature is activated.
• Displays temperature, operation feature and Error codes.
• When 46°F/8°C heating feature is turned on.
• When Active Clean feature is turned on.
• When wireless module enters AP mode.
• When Forced cooling feature is turned on.

Features

NOTE
Every time the air conditioner is powered on, a buzzing sound will be heard to indicate that the product has been powered on normally. If there is no sound, it is possible that the unit is abnormal. Please power on again or check the circuit. The actual functions are subject to the product you purchased, please check the indoor display and remote control of your AC. See the <Remote Controller Manual> for more features.

Default Setting
When the air conditioner restarts after a power failure, it will default to the factory settings (AUTO mode, AUTO fan, 24°C (76°F)). This may cause inconsistencies on the remote control and unit panel. Use your remote control to update the status.

Auto-Restart
In case of power failure, the system will immediately stop. When power returns, the Operation light on the indoor unit will flash. To restart the unit, press the ON/OFF button on the remote control. If the system has an auto restart function, the unit will restart using the same settings.

Three-minute protection feature
A protection feature prevents the air conditioner from being activated for approximately 3 minutes when it restarts immediately after operation.

Louver Angle Memory Function
Some models are designed with a louver angle memory function. When the unit restarts after a power failure, the angle of the horizontal louvers will automatically return to the previous position.
The angle of the horizontal louver should not be set too small as condensation may form and drip into the machine. To reset the louver, press the manual button, which will reset the horizontal louver settings.

Sleep Operation
The SLEEP function is used to decrease energy use while you sleep (and don’t need the same temperature settings to stay comfortable). This function can only be activated via remote control. And the Sleep function is not available in FAN or DRY mode.
Press the SLEEP button when you are ready to go to sleep. When in COOL mode, the unit will increase the temperature by 1°C (2°F) after 1 hour, and will increase an additional 1°C (2°F) after another hour.
When in HEAT mode, the unit will decrease the temperature by 1°C (2°F) after 1 hour, and will decrease an additional 1°C (2°F)after another hour.
The sleep feature will stop after 8 hours and the system will keep running with final situation.

Active Clean function (Multi-Zone Systems models do not have this function)
The Active Clean Technology washes away
dust when it adheres to the heat exchanger by automatically freezing and then rapidly thawing the frost. A “pi-pi” sound will be heard. The Active clean operation is used to produce more condensed water to improve the cleaning effect, and the cold air will blow out. After cleaning, the internal wind wheel then keeps operating with hot air to blow-dry the evaporator, thus keeping the inside clean.

• When this function is turned on, the indoor unit display window appears “CL” , after 20 to 130 minutes, the unit will turn off automatically and cancel Active Clean function.
• For some units, the system will start high temperature cleaning process, and the temperature of air outlet is very high.
  Please keep away from it. And this would lead to the rising of the room temperature .

Heat exchanger dust removal function:
This feature helps keep the outdoor coil cleaner and may extend the duration between regular maintenance intervals depending on local conditions. When the unit is turned off, a 10 seconds delay occours then the outdoor fan runs in reverse rotation for 70 seconds to blow off loose accumulated dust and debris.

Refrigerant Leakage Detection
When the system detects a malfunction of the refrigerant, the indoor unit will automatically display the following error codes:

• EL0C (System lacks refrigerant)” ,
• EHC1 (Refrigerant sensor detects leakage)”,
• EHC2 (Working condition of the refrigerant sensor is out of range and leakage is detected)”, “EHC3 (Working condition of the refrigerant sensor is out of range)”, or
• ECC1 (Other indoor unit refrigerant sensor detects leakage (Multi-zone)”.

When “EHC1” or “EHC2” error occurs, the buzzer will continue to beep for 5 to 6 minutes before stopping. You can also press any button on the remote controller to stop the buzzer. Note: Error codes of “EHC1”, “EHC2”,“EHC3” and “ECC1” are only applicable to the units with refrigerant sensor.

Lifting panel operation
In the stand-by mode, press the “Mode” and “Down” buttons for 3 seconds at the same time, the remote controller enters the setting panel state, and the remote controller displays “F2”. When setting the panel status, press the “Up” or “Down” buttons of the remote controller to control the rise or fall of the grille, and press any other button to exit the setting.

The up and down height of the panel can reach a maximum of 1.5 meters. During the decline, if the grille is raised by the obstacles, it will stop. During the ascending process, if the grille is blocked and does not rise to the correct height or a finger is pinched, it will automatically descend after a period of time and then ascend. If the grille is bocked for the third times, then the display panel will report an error and prompt for manual processing.

Breeze Away
This feature avoids direct air flow blowing on the body.

Energy Saving Tips

• DO NOT set the unit to excessive temperature levels.
• While cooling, close the curtains to avoid direct sunlight.
• Doors and windows should be kept closed to keep cool or warm air in the room.
• DO NOT place objects near the air inlet and outlet of the unit.
• Clean the air filter every two weeks.
• Adjust louvers properly and avoid direct airflow.
• Closing curtains during heating also helps keep the heat in.
• Doors and windows should be kept closed.

CARE AND MAINTENANCE

BEFORE CLEANING OR MAINTENANCE

REMEMBER TO DISCONNECT THE POWER BEFORE CLEANING OR MAINTENANCE, EXCEPT FOR CLEANING AIR FILTER. TURN THE CURCUIT BREAKER OF THE INDOOR UNIT TO OFF IS NOT A KIND OF POWER DISCONNECTION.

• Contact an authorized service technician for repair or maintenance. Improper repair and maintenance may cause water leakage, electrical shock, or fire, and may void your warranty.
• DO NOT substitute a blown fuse with a higher or lower amperage rating fuse, as this may cause circuit damage or an electrical fire.
• Make sure the drain hose is set up according to the instructions. Failure to do so could cause leakage and result in personal property damage, fire and electric shock.
• Make sure that all wires are connected properly. Failure to connect wires according to instructions can result in electrical shock or fire.

CAUTION

• Only use a soft, dry cloth to wipe the unit clean. If the unit is especially dirty, you can use a clothsoaked in warm water to wipe it clean.
• Do not use chemicals or chemically treated cloths to clean the unit.
• Do not use benzene, paint thinner,polishing powder or other solvents to clean the unit. They can cause the plastic surface to crack or deform.
• Do not use water hotter than 40°C (104°F) to clean the front panel. This can cause the panel to deform or become discolored.
• DO NOT wash the unit under running water. Doing so creates an electrical hazard. Clean the unit using a damp, lint-free cloth and neutral detergent. Dry the unit with a dry, lint-free cloth.

WARNING: DO NOT REMOVE OR CLEAN THE FILTER BY YOURSELF

Removing and cleaning the filter can be dangerous. Removal and maintenance must be performed by a certified technician.

Clean Your Indoor Unit (Air Filter)
The filter prevents dust and other particles from entering the indoor unit. Dust buildup can reduce the efficiency of the air conditioner. For optimum efficiency, clean the air filter every two weeks or more frequently if you live in a dusty area. Replace the filter with a new one if it’s heavily clogged and cannot be cleaned.

NOTE: In households with animals, you will have to periodically wipe down the grille to prevent animal hair blocking airflow.

Model A

1. In the stand-by mode, press the “MODE” and “DOWN” buttons on the remote controller a the same time for 3 seconds, the remote controller enters the panel-setting state, the remote controller displays “F2”.
2. Then press “DOWN” button on the remote controller, the air grille automatically goes down. When it stops, pick up the air filter.
   • Hold the upper edge of the filter with both hands. Gently turn and lift until the upper edge is free from the wire rope.
   • Lift the filter and move it forward slightly until the filter is separated from the 4 wire ropes.
   • Move the filter to the right until it is separated from the air grille , and then the filter can be taken out.

  Model B

1. Press the circular positon to open the two screw covers, then remove the two screws.
2. Hold and open the air grille, then take out the air filter.
3. Clean the air filter
   Dusts will accumulate on the filter along with the unit operation, and need to be removed from the filter,or the unit would not function effectively. Clean the filter every two weeks when you use the unit regularly.
   Clean the air filter with a vacuum cleaner or water.
   • The air intake side should face up when using a vacuum cleaner.
   • The air intake side should face down when using clean water.For excessive dusts, use a soft brush and natural detergent to clean it and dry in a cool place.
     CAUTION
   • Do not dry out the air filter under direct sunshine or with fire.
   • The air filter should be installed before the unit body installation.
4. Re-install the air filter.
5. Press “UP” button on the remote controller to reset the air grille. (Applicable to model A) Re-install the air grille by fixing the two screws and close the two screw covers. (Applicable to model B)

CAUTION

• Before changing the filter or cleaning, turn off the unit .
• When removing filter, do not touch metal parts in the unit. The sharp metal edges can hurt you.
• Do not use water to clean the inside of the indoor unit. This can destroy insulation and cause electrical shock.
• Do not expose filter to direct sunlight when drying. This can shrink the filter.
• Any maintenance and cleaning of outdoor unit should be performed by an authorized dealer or a licensed service provider.
• Any unit repairs should be performed by an authorized dealer or a licensed service provider.
• When the air grille is rising, please do not hinder the grille from rising with your hands or other objects.
  Please do not pull the wire rope, if necessary, please contact the local customer service team.

Maintenance your AC.

Maintenance – Long Periods of Non-Use
If you plan not to use your air conditioner for an extended period of time, do the following:

Maintenance – Pre-Season Inspection
After long periods of non-use, or before periods of frequent use, do the following:

TROUBLESHOOTING

CAUTION
If any of the following conditions occurs, turn off your unit immediately!

• The power cord is damaged or abnormally warm
• You smell a burning odor
• The unit emits loud or abnormal sounds
• A power fuse blows or the circuit breaker frequently trips
• Water or other objects fall into or out of the unit

DO NOT ATTEMPT TO FIX THESE YOURSELF! CONTACT AN AUTHORIZED SERVICE PROVIDER IMMEDIATELY.

Common Issues
The following problems are not a malfunction and in most situations will not require repairs.

Issue	Possible Causes
Unit does not turn on when pressing ON/OFF button	The Unit has a 3-minutes protection feature that prevents the unit from overloading. The unit cannot be restarted within three minutes of being turned of.
	Cooling and Heating Models: If the Operation light and PRE-DEF (Pre-heating/ Defrost) indicators are lit up, the outdoor temperature is too cold and the unit’s anti-cold wind is activated in order to defrost the unit.
	In Cooling-only Models: If the “Fan Only” indicator is lit up, the outdoor temperature is too cold and the unit’s anti-freeze protection is activated in order to defrost the unit.
The unit changes from COOL/HEAT mode to FAN mode	The unit may change its setting to prevent frost from forming on the unit. Once the temperature increases, the unit will start operating in the previously selected mode again.
	The set temperature has been reached, at which point the unit turns of the compressor. The unit will continue operating when the temperature fluctuates again.
The indoor unit emits white mist	In humid regions, a large temperature difference between the room’s air and the conditioned air can cause white mist.
Both the indoor and outdoor units emit white mist	When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture generated from the defrosting process.
The indoor unit makes noises	A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard when the drain pump (optional) is in operation.
	A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts.
Both the indoor unit and outdoor unit make noises	Low hissing sound during operation: This is normal and is caused by refrigerant gas flowing through both indoor and outdoor units.
	Low hissing sound when the system starts, has just stopped running, or is defrosting: This noise is normal and is caused by the refrigerant gas stopping or changing direction.
	Squeaking sound: Normal expansion and contraction of plastic and metal parts caused by temperature changes during operation can cause squeaking noises.

Issue	Possible Causes
The outdoor unit makes noises	The unit will make different sounds based on its current operating mode.
Dust is emitted from either the indoor or outdoor unit	The unit may accumulate dust during extended periods of non-use, which will be emitted when the unit is turned on. This can be mitigated by covering the unit during long periods of inactivity.
The unit emits a bad odor	The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations.
	The unit’s filters have become moldy and should be cleaned.
The fan of the outdoor unit does not operate	During operation, the fan speed is controlled to optimize product operation.

NOTE
If problem persists, contact a local dealer or your nearest customer service center. Provide them with a detailed description of the unit malfunction as well as your model number.

When troubles occur, please check the following points before contacting a repair company.

Problem	Possible Causes	Solution
Poor Cooling Performance	Temperature setting may be higher than ambient room temperature	Lower the temperature setting
	The heat exchanger on the indoor or outdoor unit is dirty	Clean the affected heat exchanger
	The air filter is dirty	Remove the filter and clean it according to instructions
	The air inlet or outlet of either unit is blocked	Turn the unit of, remove the obstruction and turn it back on
	Doors and windows are open	Make sure that all doors and windows are closed while operating the unit
	Excessive heat is generated by sunlight	Close windows and curtains during periods of high heat or bright sunshine
	Too many sources of heat in the room (people, computers, electronics, etc.)	Reduce amount of heat sources
	Low refrigerant due to leak or long-term use	Check for leaks, re-seal if necessary and top of refrigerant

Problem	Possible Causes	Solution
The unit is not working	Power failure	Wait for the power to be restored
	The power is turned of	Turn on the power
	The fuse is burned out	Replace the fuse
	Remote control batteries are dead	Replace batteries
	The Unit’s 3-minutes protection has been activated	Wait three minutes after restarting the unit
	Timer is activated	Turn timer of
The unit starts and stops frequently	There’s too much or too little refrigerant in the system	Check for leaks and recharge the system with refrigerant.
	Incompressible gas or moisture has entered the system.	Evacuate and recharge the system with refrigerant
	System circuit is blocked	Determine which circuit is blocked and replace the malfunctioning piece of equipment
	The compressor is broken	Replace the compressor
	The voltage is too high or too low	Install a manostat to regulate the voltage
Poor heating performance	The outdoor temperature is extremely low	Use auxiliary heating device
	Cold air is entering through doors and windows	Make sure that all doors and windows are closed during use
	Low refrigerant due to leak or long-term use	Check for leaks, re-seal if necessary and top of refrigerant
Indicator lamps continue flashing	The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes appear, wait for about 10 minutes. The problem may resolve it self. If not, disconnect the power, then connect it again. Turn the unit on. If the problem persists, disconnect the power and contact your nearest customer service center.
Error code appears and begins with the letters as the following in the window display of indoor unit: E(x), P(x), F(x) EH(xx), EL(xx), EC(xx) PH(xx), PL(xx), PC(xx)

NOTE: If your problem persists after performing the checks and diagnostics above, turn off your unit immediately and contact an authorized service center.

The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Any updates to the manual will be uploaded to the service website, please check for the latest version.

LIMITED EXPRESS WARRANTY

Congratulations on purchasing your new HVAC equipment. It’s been designed for long life and reliable service, and is backed by one of the strongest warranties in the industry. Your unit automatically qualifies for the warranty coverage listed below, providing you keep your proof of purchase (receipt) for the equipment and meet the warranty conditions.

LIMITED TEN (10) YEAR EXPRESS WARRANTY
MARS warrants all parts including the compressor of the VHP-SA Series Ductless Mini-Split to be free from defects in workmanship and materials for normal use and maintenance for ten (10) years from the date of purchase by the original consumer for the original installation. This Express Limited Warranty applies only when the Ductless Mini-Split is installed as a complete matched system: outdoor unit and indoor unit, and only when the system is installed per MARS installation instructions and in accordance with all local, state and national codes for normal use.

EXCEPTIONS
The Limited Express Warranty does not cover normal maintenance—MARS recommends that regular inspection/maintenance be performed at least once a season and proof of maintenance be kept. Additionally, labor charges, transportation charges for replacement parts, replacement of refrigerant or filters, any other service calls/repairs are not covered by this Limited Warranty. It also does not cover any portion or component of the system that is not supplied by MARS, regardless of the cause of failure of such portion or component.

CONDITIONS FOR WARRANTY COVERAGE

• Unit must be operated according to MARS operating instructions included with the unit and cannot have been subjected to accident, alteration, improper repair, neglect or misuse, or an act of God (such as a flood)
• Installation was done by a trained, licensed or otherwise qualified HVAC dealer/contractor
• Performance cannot be impaired by use of any product not authorized by MARS, or by any adjustments or adaptations to components
• Serial numbers and/or rating plate have not been altered or removed
• Damage has not been a result of inadequate wiring or voltage conditions, use during brown-out conditions, or circuit interruptions
• Air flow around any section of the unit has not been restricted
• Unit remains in the original installation
• Unit was not purchased over the internet

DURATION OF WARRANTY & REGISTRATION
The warranty begins on the date of purchase by the original consumer. The consumer must retain a receipted bill of sale as proof of warranty period. Without this proof, the express warranty begins on the date of shipment from the factory.

REMEDY PROVIDED BY THE LIMITED EXPRESS WARRANTY
The sole remedy under the Limited Warranty is replacement of the defective part. If replacement parts are required within the period of this warranty, MARS replacement parts shall be used; any warranty on the replacement part(s) shall not affect the applicable original unit warranty. Ready access to the unit for service is the owner’s responsibility. Labor to diagnose and replace the defective part is not covered by this Limited Express Warranty. If for any reason the replacement part/product is no longer available during the warranty period, MARS shall have the right to allow a credit in the amount of the current suggested retail price of the part/product instead of providing repair or replacement.

LIMITATION OF LIABILITY

1. There are no other express or implied warranties. MARS makes no warranty of merchantability. We do not warrant that the unit is suitable for any particular purpose or can be used in buildings or rooms of any particular size or condition except as specifically provided in this document. There are no other warranties, express or implied, which extend beyond the description in this document.
2. All warranties implied by law are limited in duration to the seven-year term of the parts warranty. Your exclusive remedy is limited to the replacement of defective parts. We will not be liable for any consequential or incidental damages caused by any defect in this unit.
3. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. Some states do not allow limitation on how long an implied warranty lasts or do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you.
4. No warranties are made for units sold outside the continental United States and Canada. Your distributor or final seller may provide a warranty on units sold outside these areas.
5. MARS will not be liable for damages if our performance regarding warranty resolution is delayed by events beyond our control including accident, alteration, abuse, war, government restrictions, strikes, fire, flood, or other acts of God.

HOW TO OBTAIN WARRANTY SERVICE OR PARTS
If you have a warranty claim, notify your installer promptly. If the installer does not remedy your claim, write to MARS, 1900 Wellworth Ave., Jackson MI 49203. Enclose a report of inspection by your installer or service person. Include model number, serial number, and date of purchase. Owner responsibilities are set forth in the instruction manual—read it carefully.

Please visit www.marsdelivers.com to register your new product

KEEP THIS INFORMATION AS A RECORD OF YOUR PURCHASE

• Outdoor Unit: Model No. _______________
• Serial No. _______________
• Indoor Unit 1: Model No. _______________
• Serial No. _______________
• Indoor Unit 2: Model No. _______________
• Serial No. _______________
• Indoor Unit 3: Model No. _______________
• Serial No. _______________
• Indoor Unit 4: Model No. _______________
• Serial No. _______________
• Indoor Unit 5: Model No. _______________
• Serial No. _______________
• Date of Purchase______________________________________________________

Due to ongoing product improvements, specifications and dimensions are subject to change and correction without notice or incurring obligations. Determining the application and suitability for use of any product is the responsibility of the installer.

Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations- Incentive and rebate programs have precise requirements as to product performance and certification- All products meet applicable regulations in effect on date of manufacture; however, certifications are not necessarily granted for the life of a product Therefore, it is the responsibility of the applicant to determine whether a specific model qualifies for these incentive/rebate programs.

Frequently Asked Questions

• Q: How often should I clean my air conditioning unit?
  A: It is recommended to clean the air conditioning unit at least once every three months to maintain optimal performance and efficiency.
• Q: Can I install the air conditioning unit in a bathroom?
  A: It is advised not to install the air conditioning unit in wet rooms like bathrooms or laundry rooms due to the risk of electrical components short-circuiting from excessive moisture exposure.

Documents / Resources

mars B-VHP061A-1 Series 1 Way Ceiling Cassettes [pdf] Owner's Manual B-VHP061A-1, B-VHP091A-1, B-VHP121A-1, B-VHP181A-1, B-VHP061A-1 Series 1 Way Ceiling Cassettes, B-VHP061A-1 Series, 1 Way Ceiling Cassettes, Ceiling Cassettes, Cassettes

References

• User Manual