ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier

Restoration & Moisture &Ventilation
Sentinel HDi90 Installation and Operations Manual
ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - warning ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - warning1

Warranty Registration

Congratulations on purchasing a new Sentinel Dehumidifier. Your new dehumidifier comes with an extended warranty plan. To register, simply fill out and return the warranty form provided in your dehumidifier box.
Be sure to note your dehumidifier serial number as you will need it for registration.

Safety Notes

  • The Sentinel Series Dehumidifier must always be connected using a grounded electrical connection (as required for all electrical appliances). If non-grounded wiring is used,  all liability reverts to the owner, and the warranty is voided.
  • Sentinel Dehumidifiers should only be maintained and repaired by a qualified technician.
  • Sentinel Dehumidifiers are only intended for operation when oriented with the unit sitting on its feet and level. Operating the unit in any other orientation could allow water to flood electrical components.
  • Always unplug the dehumidifier before moving it to another location.
  • If there is a chance that water flooded the dehumidifier, it should be opened and allowed to dry thoroughly before reconnecting to electrical power and restarting.
  • To ensure proper operation, neither the inlet nor discharge should be positioned against a wall. The inlet requires a minimum of 12” clearance and the discharge requires a minimum of 36” clearance.
  • The best option for proper diffusion of air throughout the room is to have the discharge blowing away from a wall and the inlet pulling air in parallel to a wall.
  • Do not insert your fingers or any objects into the inlet or discharge.
  • All work on the dehumidifier should be done with the unit “off? and unplugged.
  • Do not use water to clean the exterior. To clean the unit, unplug from power, then use a damp cloth to wipe the exterior.
  • Do not stand on the machine or use it as a device to hang clothes.

Identification

For future reference, write down the model, serial number, and date of purchase for your dehumidifier.
This is extremely helpful if you need to seek assistance in the future. The data label on the side of your unit has the key characteristics of your specific unit.
Model Number: Sentinel HDi90
SerialNumber:____
Date of Purchase:____
For additional questions concerning your dehumidifier, the following options are available:
* Contact your installing contractor
* E-mail:[email protected]

Electrical Supply

Power Supply: 115 V, 60 Hz AC, Single Phase
Outlet Requirement: 3-Prong, GF
Circuit Protector: 15 Amp
WINNING: 240 Volts AC may cause serious injury from electric shock.
To reduce the risk of injury:

  1. Disconnect electrical power before servicing.
  2. Only plug the unit into a grounded electrical circuit.
  3. Do not use an extension cord.
  4. Do not use a plug adapter.

Principle of Operation

The Sentinel Series Dehumidifiers utilize its integral humidistat to monitor the conditioned space.
When the relative humidity goes above the selected set point, the dehumidifier will energize. Air is drawn across an evaporator coil, which is cooler than the dew point of the air.  This means moisture will condense out of the air. The air is then reheated through the condenser coil and distributed back into the room.

Installation

The area to be controlled should be sealed with a vapor barrier. If the unit is installed in a crawlspace, all vents should be sealed.

WARNING: Do not install your dehumidifier in a corrosive environment. Some liquid vapor barriers dry via “solvent evaporation”. Always make sure that the barrier is completely dry and the area is thoroughly ventilated before installing a dehumidifier.

Step #1: Place the dehumidifier on a level surface.
Do not place the unit directly on the vapor barrier. For example, use blocks or pavers to create a level surface.

If the unit is handled in such a manner that the compressor did not remain in the upright position, you will need to place it on a level surface, then wait a minimum of 2 hours before turning it “on”.
Step #2: Set Up Drain Line
The included drain line attaches to the unit via a compression type fitting on the discharge end of the unit. To attach the drain line, remove the compression nut and slide it over the end of the hose to be attached to the unit. Slide the compression nut side of the hose over the insert on the compression fitting completely. Tighten compression nut.
Step #3: Plug unit into 15 amp grounded circuit.

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig

  1. Power KeyALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon
    • Use this button to turn the dehumidifier on and off. Press once to turn the machine on. You will hear two beeps and the q light will illuminate green. Press the power button a second time and you will hear one beep as the machine shuts down. Note that there is a one-minute fan delay on shutdown.
  2. Arrow ButtonsALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon2ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon3
    • Use the up and down arrow buttons to set the desired humidity setpoint on the display screen.
    ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon4The set point can be any number between 36-90%. Creating a set point means that when the indoor humidity is lower than the set point, the machine will stop automatically. Conversely, when the indoor humidity is higher than the set level, the unit will operate.
    NOTE: The humidity levels displayed are approximate only (+1- 5%).
  3. Continuous ModeALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon3
    • To switch into the continuous mode, simply use the down arrow key to set the humidity below 36%. At this point the Cont. the light should illuminate green on the display board to indicate you have successfully switched to continuous mode. The display screen will show “CO”.
    • When set to continuous, the dehumidifier will run constantly, regardless of the humidity level until you turn the unit off or switch back to normal humidistat operation. If you would like to switch back to normal humidistat operation, simply move the setpoint above 36%.
  4. Central Control
    • This mode is not applicable on the Sentinel HDi90.
    • Central Control light should be off at all times when not connected to the AC.
  5. Manual Drain Button
    • For extended storage or movement of the machine, press the “Drain” button to remove water from the integral pump’s reservoir.
  6. Pump Trouble Warning
    • When the pump reservoir water level is too high, the high water sensor will activate to prevent overflow. When this occurs, the dehumidifier will stop the compressor automatically and the display will show “E4”. After a 1 minute delay, the fan motor will turn off and the machine will not operate until the problem is resolved. To reset the unit after an “E4” error, check the pump to verify it is functioning, then unplug the unit for two minutes.
  7. Auxiliary Terminals A5/A6
    • The A5/A6 on the terminal strip can be used as a water level warning switch for external condensate pumps. If an external pump is connected, the pump must have a self-contained power supply and a water level signal line.

Indicator Lights

  1. Humidity Display ScreenALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon4
    • The display screen has two functions: 1. When the unit is powered on, it shows the humidity of the space. 2. While setting the desired humidity level, the screen will show the set humidity. After a brief delay, the display will revert to the current humidity level.
  2. Power Indicator LightALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon1
    • This light indicates that the unit is properly powered on and ready to operate. Always make sure the unit is “off prior to performing any service. When the power light is blinking, it means that the unit has reached the humidity setpoint.
  3. Continuous Mode/Auto Defrost LightALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon5
    ▪ When this light illuminates green, it indicates that the dehumidifier is set to the continuous operation mode.
    • When the light glows red, it means the unit is in auto defrost mode and clearing the evaporator coil of any ice buildup.
  4. Compressor LightALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon6
    • When the compressor light glows red, it indicates the compressor has been initiated but is currently warming up.
    • Once the compressor light switches to green, it indicates the compressor is in working status.

Remote Control Instructions

Sentinel Dehumidifiers can be controlled using an optional remote accessory. The Sentinel Remote Control connects to your Sentinel Series Dehumidifier via a 25′ CAT 5 cable. The Remote control contains an integrated sensor that gives you multiple options for remotely controlling your unit, in addition to monitoring the conditions surrounding the dehumidifier.
One application for the remote control is to install the dehumidifier in one room with the conditioned air ducted into a second room that contains the remote. For example, the dehumidifier could be installed in a laundry room and ducted into a living room. The remote would then be mounted in the living room so the remote sensor can control the humidity and provide easy controls for the user.
Another useful application for the remote control is if the dehumidifier is an area that’s difficult to access on a regular basis. For instance, if your dehumidifier is installed in your crawl space, the remote could be mounted in your living space or garage. This provides you with an easy way to monitor the dehumidifier.

  1. On/Off (Power)Button
    Press the on/off button and the machine will start running (two beeps). Press the button again to turn the machine off.
  2. Up Button ▲ / Down Button ▼
    Use the Up and Down arrow buttons to adjust the humidity level. ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig1
  3. Mode M
    Use the Mode button to switch between dehumidification and a ducted application.
    • The ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon7symbol on the display board indicates the sensor on the remote control is being utilized.
    • The ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon8 symbol on the display board indicates the sensor on the dehumidifier is being utilized
  4. Temperature T
    Press the temperature button to display the current temperature on the screen. Press the button again to turn off the display.
  5. Continuous C
    Press this button to switch the unit into continuous mode. cant. will appear on the display to indicate continuous mode.
  6. Drain Pump p
    Use this button if the unit will not be in use for an extended period of time. Pressing the drain pump button will remove water from the pump reservoir, so the unit can be safely moved or stored.
    NOTE: The symbols mentioned above will only appear when the dehumidifier is powered on.

Operating Instructions

  1. Start the machine
    Press the power key to turn the machine on.
  2. Adjust Settings
    Use the up and down arrow keys to adjust your desired setpoint (typically 50-55%).
  3. Stop the machine
    Press the power key again and the machine will stop. Note the fan will continue to operate for 1 minute after the unit has shut off.
    NOTE: Do not disconnect the power cord to force the machine to stop. Always use the power button.
  4. Water Drainage
    The Sentinel HDi90 has both automatic and manual draining. During normal operation, the Sentinel HDi90 will automatically drain as required. If you would like to store or move the machine, you may press the drain button to drain the water from the pump reservoir. The drain will operate for 15 seconds each time the button is pushed. It may be necessary to push the drain button more than once to completely empty the reservoir

Sentinel HDi90 Diagram

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig2

Maintenance

WARNING: Always unplug the unit before doing any maintenance.
Condensate Pump
Your Sentinel HDi90 is equipped with an integral condensate pump designed to pump water from your dehumidifier out to the desired drain. This pump requires routine maintenance that is not covered by your 1-year parts warranty. Only a defective pump will be repaired or replaced during the warranty period.
Preventative Maintenance
As with all pumps, preventative maintenance is necessary to prevent issues from dirt and slime that may accumulate in the drain system. This includes the drain pan, hose to the condensate pump, pump reservoir, pump head float assembly, and discharge tubing.
At least once per year, clean your pump system
ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Cleaning the machine body
Use a soft damp cloth to clean the exterior of the unit. Do not use any soap or solvents.
ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Cleaning the filter

  1. Unplug the unit.
  2. Slide out the filter.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig3
  3. Clean the filter mesh by vacuuming or washing with warm water (no soap or solvents).ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig4
  4. Be sure the filter is completely dry before reinserting.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig5

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Coil Maintenance

  • Once per year, clean the coils with an approved coil cleaner. The coil cleaner should be a self-rinsing, foaming cleaner such as WEB® Coil Cleaner.

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Electrical Access

  1. Unscrew the 4 screws on the side panel to access the control board.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig6

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Pump maintenance

  1. Unscrew the 4 screws on the pump access panel.
  2. Remove the screw on the pump.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig7
  3. Undo the 3 pumps’ quick connect.
  4. Insert a flathead screwdriver into the notch on the side of the pump to help you gently lift the pump off its reservoir (the reservoir remains attached to the unit).

ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - icon9 Cleaning/Disinfecting the Pump

Basic Cleaning (Complete about once a year, depending on the environment)

  1. Open the end cap on the filter side of the unit. Press the drain button to drain the reservoir.
  2. Disconnect power to the dehumidifier.
  3. Mix a 16 oz solution of either (1 oz bleach + 15 oz water) OR (4 oz white vinegar + 12 oz water).
  4. Pour the solution into the drain tray at the base of the coils. If any cleaning solutions get on coils, flush with water.
  5. Allow the solution to soak for 15 minutes.
  6. Reconnect the dehumidifier to power.
  7. Fill the reservoir with water and flush/cycle the pump at least two times.
  8. If the drain line is still filled with debris, repeat the process. If still not cleaned, move on to Advanced Cleaning.
  9. Reassemble the unit, unless moving on to advanced cleaning.

Advanced Cleaning(Complete as needed)

  1. Press the drain button to drain the water from the reservoir (A wet-dry vacuum or towels can be used to remove any remaining water).
  2. Unplug the dehumidifier and remove the cover so you have access to the pump.
  3. Remove the pump head from the reservoir by unscrewing the screw. Wipe the reservoir clean with a paper towel.
  4. Mix a 16 oz solution of either (1 oz bleach + 15 oz water) OR (4 oz white vinegar+ 12 oz water).
  5. Fill the pump reservoir with a cleaning solution.
  6. Reassemble the pump, then use a manual drain button to flush the mixture through discharge tubing.
  7. Pour the same cleaning solution slowly into the drain tray under evaporator coils and let it clean the hose from the pan to the pump. This process can be stopped when the pump energizes one time.
    NOTE: If you get any of the cleaning solutions on the coils, flush with water.
  8. Pour sufficient clean water through the drain pan to allow the pump to turn on twice.
  9. Reassemble the unit and return it to operational status.

Dehumidifier Storage

If the unit will be stored for an extended period of time, complete the following steps:

  1. Turn off the unit and allow it to dry
  2. Complete steps #1-3 in Advanced Cleaning (above) to clean out the pump reservoir.
  3. Wrap and secure the power cord
  4. Cover filter mesh
  5. Store in a clean, dry space

Ducted Applications

Ducting the dehumidifier allows the unit to be in one room while conditioning an adjacent room. The inlet/return grille is designed for 12″ flex ducting (optional accessory PN: W-103) while the supply grille is designed for 6″ flex ducting.
Be sure to secure the ducting with a tie wrap. Also, keep in mind, that the supply ducting can be screwed into an adapter if necessary.
Ducting Installation

  • The maximum total length of the duct run= 10′
  • Maximum length if only ducting inlet or outlet= 6′
  • To connect 12″ return ducting, it may be helpful to:
    1. Remove the inlet grille from the end cap.
    2. Connect duct to inlet grille.
    3. Reconnect inlet grille to end cap,

Note: The supply duct adapter is standard on all units. The return duct collar is an optional accessory.
ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig8
Removing Duct Adapter
If it is necessary to remove the adapter, place your hand at bottom of the adapter and use your hands to lift it out and down. This will remove the cover hooks from the machine.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig9
Installing Duct Adapter
To install the adapter, line it up with holes on the side of the unit and push it up from the base of the adapter.
Flex Duct Installation
Rotate the flex duct counter-clockwise.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig10
Flex Duct Removal
Rotate flex duct clockwise or remove wire tie.ALORAIR 724 1004 Sentinel HDi90 90 Pint Dehumidifier - fig11

Troubleshooting

Symptom Cause Solution
Machine Won’t Run Power Supply Verify that there is power to the outlet and that the plug is properly installed in the outlet.
Room Temperature Over 105°F (Display HI) or Below 33°F (Display LO) The unit is outside the operating temperature range. Modify the room conditions so the temperature is between 33°-105°Fand operation will commence.
Low Air Flow Air Fitter is Clogged Clean the filter mesh according to the instructions listed in the manual.
Air Inlet or Outlet is Blocked Clear the blockage from the inlet or outlet.
Loud Noise Machine Is Not Level Move the dehumidifier to flat, firm ground.
Filter Mesh is Blocked Clean the filter mesh according to the instructions listed in the manual.
Trouble Code E:1 El =Humidity Sensor Issues Check to ensure that the wire is connected at both ends. If no issues are visible, the sensor may be faulty.
Trouble Code E: 4 Pump has failed Verify that the pump is working. If so. unplug the unit for two minutes. then restart.
Trouble Code: HI or LO Room Temperature Over 105°F or Below 33°F (Display LO) The unit is outside the operating temperature range. Modify the room conditions so the temperature is between 33*-105°F and operation will commence. If the room is not out of temperature range, replace the faulty sensor.

Pump Alarm- Trouble Code E4

If a pump alarm is shown on the display, complete the following steps:

  1. Reset the unit by disconnecting the power cord and then reconnecting it.
    NOTE: THE UNIT WILL NOT FUNCTION UNTIL THE ERROR CODE HAS BEEN CLEARED.
  2. Manually check to see if the pump is operational by pressing the drain button. Check if the pump ener­gizes and de-energizes properly. Additionally, check to see if any water purged from the system.
  3. If you haven’t cleaned the system recently, check the discharge line for obstruction, then clean the balance of the pump system (see “Maintenance” on page 8 for details).
  4. Replace the hoses and/or pump, if maintenance alone isn’t sufficient.

Sentinel HMO Spare Parts

ALL Sentinel Models-Parts
Pa rt#                                    Description
S-100 Remote Control Package(cable+ remote)
S-101 Remote Control
S-102 Remote Control Cable,25′
S-103 Return Duct Collar Accessory
S-106 Duct Kit Assembly(W-103+W-100)
S-107 Flexible Supply Duct,72″
S-108 Main Control Board
S-109 Display Board
S-110 RH/Temperature Sensor
Sentinel HDi9O-Filters
Pa rt#                                    Description
S-915 Prefilter
S-916 Filter Assembly(Cassette+Prefilter)
S-917 MERV-8 Filter
S-918 HEPA Filter
S-919 Carbon Filter
Sentinel HDi9O-Parts

Part#                          Description

S-900 Fan Motor
S-901 Complete Fan Assembly
S-902 Fan Capacitor
S-903 Compressor
S-904 Compressor Capacitor
S-905 Coil Assembly
S-907 Condensate Pump Assembly
S-908 RH/Temperature Sensor Cable
S-909 Display Cable
S-910 CAT 5 Prot Internal Cable
S-911 Foot, Adjustable

Limited Warranty
This limited warranty starts from the date of purchase. Alorair Solutions Inc. warrants to the original purchaser that this ALORAIR product is free from manufacturing defects in material or workmanship for the limited warranty period of:
Six (6) Month parts and labor. This includes the shipment charges for replacement parts or units.
One (1) year parts and labor. This does not include the shipment charge to send the defective product back to be repaired or replaced.
Three (3) years of parts and labor on Refrigeration System ONLY (Compressor, Condenser, and evaporator). Transportation cost, not included.
Five (5) years parts on Refrigeration System ONLY(Compressor, Condenser, and evaporator). Transportation cost, not included.
This limited warranty is valid only on products purchased from the manufacturer or ALORAIR authorized dealer and operated, installed, and maintained according to the instructions included in this user guide or furnished with the product. Alorair Solutions Inc will not provide in-home service during or after the warranty period. You may be responsible for the shipping charge to bring the product to the manufacturer for service.
To receive warranty service, the purchaser must contact ALORAIR at 888-990-7469 or [email protected]. Proof of purchase or order number is required to receive warranty service. During the applicable warranty period, a product will be repaired or replaced at the sole option of ALORAIR.
Limited Warranty Exclusions
This limited warranty covers manufacturing defects in materials or workmanship encountered in a normal household, commercial or noncommercial use of this product and shall not cover the following:

  • Damage occurs in uses for which this product was not intended.
  • Damage caused by unauthorized modification or alteration of the product.
  • Cosmetic damage includes scratches, dents, chips, and other damage to the product’s finishes.
  • Damage caused by abuse, misuse, pest infestation, accident, fire, floods, or other acts of nature.
  • Damage caused by incorrect electrical line current, voltage, fluctuations, and surges.
  • Damage caused by failure to perform proper maintenance of the product.

The use of this product in SPA or a room with an OUTDOOR POOL invalidates or voids the limited warranty.

AlorAir Solutions INC.
Add:14752 Yorba Ct Chino CA 91710 US
Tel: 1-888-990-7469 E-mail: [email protected]
Specifications subject to change without notice

Documents / Resources

ALORAIR 724-1004 Sentinel HDi90 90 Pint Dehumidifier [pdf] User Manual
724-1004, Sentinel HDi90 90 Pint Dehumidifier, 724-1004 Sentinel HDi90 90 Pint Dehumidifier

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