ActronAir Air Conditioner Wall Controller

Controller Model Numbers

LM7

LM7-D

LM24W

Congratulations on your purchase of an ActronAir air conditioning system. This unit has been designed and manufactured with the highest quality standard in mind. Please read this manual carefully and keep it for future reference.

General Information

This manual provides instructions for two types of wall controllers: the standard 7-Day programmable model LM7 and the optional model LM24W. The LM7 series controllers have all the features of the LM24W series, plus the addition of a fully programmable 7-Day Timeclock.

Summer Operation: When the system is operating on COOLING CYCLE, room air is circulated through the filter and indoor unit, where heat, excess moisture, and dust are removed. The clean, cool air is returned to the room. Dust and other airborne particles are trapped in the filter, and condensed moisture is drained away. Indoor heat is transferred via refrigeration pipes to the outdoor unit, which exhausts it to the atmosphere.

Winter Operation: This is the reverse of summer operation. During the HEATING CYCLE, the outdoor unit extracts heat from the outside air and transfers it to the indoor unit via the same pipes. The circulated air is heated and returned to the rooms, filtered to reduce dust and other particles.

Safety and Operation Precautions

Access Panels and Guards: Never remove any access panels or guards, as this could cause injury from electric shock or burns from extremely hot components. Never allow body parts or objects to protrude through fan guards or any other opening, as this could cause personal injury and damage the air conditioner.

Supervision of Children and Infirm Person: This appliance is not intended for use by young children or infirm persons unless adequately supervised by a responsible person to ensure they can use the appliance safely. Young children should be supervised to ensure they do not play with the appliance.

Return Air Filter: The air conditioner must never be operated without a return air filter, as this will allow dust to build up on the Indoor Coil, making it difficult to clean and causing the system to operate inefficiently or fail.

Crankcase Heater Precaution: The main power to the system must be kept ON at all times to prevent damage to the outdoor compressor unit. Should the main power be disconnected or interrupted for 6 hours or longer, do not attempt to start the system for 2 hours after power is restored. This allows the compressor to warm up and remove any liquid refrigerant that may cause damage.

System Information

Air Conditioner

Model No. and Serial No. are situated on the access panel of the outdoor unit's bottom left corner.

Wall Controller

Model No. is situated inside the wall controller flip lid.

Installer

Company Name

Phone Number

Technicians Name

Advance Features

1. Auto-Restart After Power Failure: If a power failure occurs while the air conditioner is running, the wall controller will restart the air conditioner in the same mode when power is restored.
2. Dual Wall Control Operation (Optional): Two wall controls can be installed on one system, useful for two-storey houses or master bedrooms for improved temperature control. (See Page 23 for more info).
3. Room Temp Display with One Touch: Press the SELECT UP ▲ or DOWN ▼ arrow button to display the room temperature for 3 seconds. The displayed temperature depends on the selected sensor if zones are fitted. (See Page 22).
4. Integrated Zoning (Optional): This feature allows selection of remote temperature sensors based on selected zones, ensuring comfort in the occupied area.
5. Auto Defrost Function (Heating Mode): Detects frost build-up on the outdoor heat exchanger at low outdoor temperatures and automatically activates defrost mode. The “HEAT” symbol flashes every 10 seconds during defrost.
6. Hot Start Function (Heating Mode): Delays the indoor fan during heating mode start-up to allow the heat exchanger to warm up, preventing cold drafts. This also activates after defrosting.
7. Filter Clean Light: The “FILTER” light flashes after a preset number of operating hours, indicating it's time to check the filter. (See Maintenance Sec, page 28).
8. Self Diagnosis: If a fault occurs, the microprocessor diagnoses it and displays a fault code on the wall controller. (See Troubleshooting, page 29).

Wall Controller Functions

LM7 & LM24W Series

Buttons and functions are the same, except for items (2) Program Button and (6) Exit Button, which are not available to LM24W. Item (20) Repeat/Backlight Button is LM7 only.

LM7 & LM7-D Display Components:

• 1 LCD Display: Shows setting and operation conditions.
• 2 Program Button: For setting the clock and 7-Day timeclock menu.
• 3 Fan Control Button: Changes fan speed (high, medium, low) and selects continuous/non-continuous fan operation.
• 4 Temperature-Up Setting Button: Raises room temperature setting.
• 5 Temperature-Down Setting Button: Lowers room temperature setting.
• 6 Exit Button: Quick exit from time clock programming menu.
• 7-10 Zone Buttons (1-4): With On/Off Indicators.
• 11-14 Zone Buttons (5-8): With On/Off Indicators.
• 15 On/Off Button: Turns the system on or off.
• 16 Timer Operation Button: Activates timer function.
• 17 Operation Mode Button: Selects cooling, heating, and auto modes.
• 18 Select/Clock-Up Setting and Room Temp Display Button.
• 19 Select/Clock-Down Setting and Room Temp Display Button.
• 20 Repeat/Backlight Button (LM7 only): Repeats previous day's settings or adjusts backlight.
• 21 Display/Backlight Button (LM24W only): Adjusts backlight.

LM7, LM7-D & LM24W Display Functions:

• 22 Day indicator (LM7/LM7-D only): Displays the day of the week and selected day for programming.
• 23 Timer Indicator: Shows when the timer is in operation.
• 24 Time Clock Indicator (LM7/LM7-D only): Indicates time clock status.
• 25 Event Indicator (LM7/LM7-D only): Shows the programmed event of the day.
• 26 On Indicator: Shows the system is on.
• 27 Off Indicator: Shows the system is off.
• 28 Timer/Clock and Room/Setpoint Temperature Indicator: Displays setpoint, room temperatures, time, countdown timer, and event times (LM7/LM7-D). Displays setpoint, room temperatures, and filter countdown time (LM24W).
• 29 AM Indicator (LM7/LM7-D only).
• 30 PM Indicator (LM7/LM7-D only).
• 31 Inside Room Temperature Indicator: Flashes to indicate current room temperature.
• 32-34 Low, Medium, High Speed Fan Indicators.
• 35 Set Indicator: Illuminates during time and timeclock setting adjustments.
• 36 Degree Centigrade Indicator: Flashes to indicate current room temperature reading.
• 37 Run Indicator: Shows outdoor unit operation; flashes if on delay.
• 38 Auto Indicator: Shows automatic heating or cooling selection.
• 39 Heating Operation Indicator.
• 40 Cooling Operation Indicator.
• 41 Filter Indicator: Shows filter status.
• 42 Continuous Indicator: Illuminates when fan is set to continuous mode.
• 43 Lock Symbol: Shows during backlight adjustments and when turning backlight on/off.
• 44 1 & 2 Indicator (LM7/LM7-D only): Illuminates with Event to show programming event.

LCD Backlight

LCD Backlight Level Adjustments

Press and hold the REPEAT (LM7) or DISPLAY (LM24W) Button. Then press the SELECT UP ▲ / DOWN ▼ Arrow Button to adjust the backlight level.

• To brighten: press SELECT UP Button.
• To dim: press SELECT DOWN Button.

Release buttons at the desired level. The LOCK symbol will appear for 1 second, indicating the backlight level is set.

Turn On/Off LCD Backlight

Turn On LCD Backlight: Press and hold REPEAT (LM7) or DISPLAY (LM24W) Button for 4 seconds. The LOCK symbol will appear, then release the button; the backlight will remain On.

Turn Off LCD Backlight: Press and hold REPEAT (LM7) or DISPLAY (LM24W) Button for 4 seconds. The LOCK symbol will appear, then release the button; the backlight will turn Off after 6 seconds.

ON/OFF Button Light

Turn On the On/Off Button Light: Press and hold REPEAT (LM7) or DISPLAY (LM24W) Button, press and release the ON/OFF Button, then release REPEAT (LM7) or DISPLAY (LM24W) Button. The LOCK symbol will appear, and the On/Off Button light will remain on.

Turn Off the On/Off Button Light: Press and hold REPEAT (LM7) or DISPLAY (LM24W) Button, press and release the ON/OFF Button, then release REPEAT (LM7) or DISPLAY (LM24W) Button. The LOCK symbol will appear, and the On/Off Button light will turn off after 6 seconds.

Cooling Operation

1. Press ON/OFF Button.
2. Press the AUTO HEAT/COOL Button until "COOL" appears on display.
3. Set the desired temperature by pressing either the SET TEMP UP ▲ or DOWN ▼ arrow key.
   • Maximum temperature setting: 30°C.
   • Minimum temperature setting: 16°C.
   • For a warmer room, press the UP arrow key.
   • For a cooler room, press the DOWN arrow key.
4. Adjust the desired fan speed by pressing the FAN Control Button. The indoor fan can run continuously (CONT indicator ON) for maximum air circulation, or cycle On and Off with the Outdoor Unit (CONT indicator OFF).
5. Press ON/OFF Button again to turn the system OFF. The system will retain your last setting until the next operation.

Heating Operation

1. Press ON/OFF Button.
2. Press the AUTO HEAT/COOL Button until “HEAT” appears on display.
3. Set the desired temperature by pressing either the SET TEMP UP ▲ or DOWN ▼ arrow key.
   • Maximum temperature setting: 30°C.
   • Minimum temperature setting: 16°C.
   • For a warmer room, press the UP arrow key.
   • For a cooler room, press the DOWN arrow key.
4. Adjust the desired fan speed by pressing the FAN Control Button. Continuous fan operation is preferred for cooling, but for heating, cycling the fan (CONT indicator OFF) prevents cool drafts.
5. Press ON/OFF Button again to turn the system OFF. The system will retain your last setting until the next operation.

Auto Operation

Automatically changes between heating and cooling mode.

1. Press ON/OFF Button.
2. Press the AUTO HEAT/COOL Button until "AUTO" appears on display.
3. Set the desired temperature by pressing either the SET TEMP UP ▲ or DOWN ▼ arrow key.
   • Maximum temperature setting: 30°C.
   • Minimum temperature setting: 16°C.
   • For a warmer room, press the UP arrow key.
   • For a cooler room, press the DOWN arrow key.
4. Adjust the desired fan speed by pressing the FAN Control Button. Continuous fan operation is preferred for cooling, but for heating, cycling the fan (CONT indicator OFF) prevents cool drafts.
5. Press ON/OFF Button again to turn the system OFF. The system will retain your last setting until the next operation.

Fan Only Operation

1. Make sure the system is OFF.
2. Press the FAN ☑ Button.
3. Adjust the fan speed by pressing the FAN ☑ Button.
4. Press ON/OFF button again to turn the system OFF. The system will retain your last setting until the next operation.

ESP Fan Feature

Available for ESP Plus and ESP Ultima Models.

Circulation Operation

Fan Speed Cycle:

• HIGH = High air circulation.
• MED = Normal air circulation.
• LOW = Low air circulation.
• ESP = Variable air circulation; fan speed is determined automatically by the controller based on the number of outlets or zones open.

Wall Controller Display:

Circulation Operation (Continuous)

Fan Speed Cycle:

• CONT HIGH = High air circulation, continuous run.
• CONT MED = Normal air circulation, continuous run.
• CONT LOW = Low air circulation, continuous run.
• ESP = Variable air circulation; fan speed is determined automatically by the controller based on the number of outlets or zones open.
• CONT ESP = Continuous variable air circulation; fan speed is determined automatically by the controller based on the number of outlets or zones open.

Wall Controller Display:

Timer Operation

OFF Timer Function

1. Press the ON/OFF Button. Ensure the system is running with desired operating conditions.
2. Press the TIMER ☑ Button.
3. Set the desired hours for the system to turn OFF by pressing either the SELECT UP ▲ or DOWN ▼ arrow key. The timer can be set from 0.5 to 24 hours.

Timer Cancellation

Press ON/OFF Button again.

Changing the Hours Set

Follow steps 2 and 3.

ON Timer Function

1. Make sure the system is OFF.
2. Press the TIMER ☑ Button.
3. Set the desired hours for the system to turn ON by pressing either the SELECT UP ▲ or DOWN ▼ Arrow key. The timer can be set from 0.5 to 24 hours.

Timer Cancellation

Press ON/OFF Button again.

Changing the Hours Set

Follow steps 2 and 3.

Notice:

• When the air conditioner is started by the timer function, it will only start in Auto mode.
• Circulation mode cannot be turned ON by timer.

7-Day Programmable Model

Timeclock Operation

The 7-Day timeclock feature allows setting the air conditioner to turn ON and OFF at different times for each day of the week. Each day can have two programmed events, each with an ON and OFF time.

Example of Typical Timeclock Set Up:

Cancelling an Individual Event

Go to the ON time for the event you wish to cancel and press the ON/OFF button. “--:--” will be displayed, indicating the event is cancelled.

Re-Activate an Event

1. Repeat steps 1 & 2 as above.
2. Press the ON/OFF button until the time re-appears.

Setting the Time and Day

1. Press the “PROGRAM” button 3 times; “SET” will be illuminated with “TIME” flashing.
2. Adjust the “Hours” using the SELECT ▲ / ▼ buttons.
3. Press the “PROGRAM” button.
4. Adjust the “Minutes” using the SELECT ▲ / ▼ buttons.
5. Press the “PROGRAM” button.
6. Adjust the “Day” using the SELECT ▲ / ▼ buttons.

Battery Backup: During a power failure, the clock retains the time and day via the backup battery inside the system.

Activating and De-activating the 7-Day Timeclock

Activating

1. Press the PROGRAM button twice.
2. Press ON/OFF until “ON” is flashing.
3. Press the EXIT button.
4. The TIME CLOCK indicator should now be turned on.

De-Activating

1. Press the PROGRAM button twice.
2. Press ON/OFF until “OFF” is flashing.
3. Press the EXIT button.
4. The TIME CLOCK indicator should now be turned off.

Programming the Events

1. Press the PROGRAM button repeatedly until event 1 and “MON” is showing. You are now setting MONDAY, event 1, ON time.
2. Use the SELECT ▲ / ▼ buttons to adjust the time.
3. Press the PROGRAM button to move to event 1 OFF time and follow step 2.
4. Press the PROGRAM button to move to the next event. If you press the EXIT button before moving to the next event, the programmed time will not be entered.
5. Repeat the above steps until all required events are programmed.

Programming Past Midnight:

• Event ON times can be set to 11:45 PM of the current day.
• Event OFF times can be set to 9:00 AM the following morning.

Notice: If you program event 1 past midnight, event 2 will be automatically cancelled.

Cancelling an Individual Event

1. Press the PROGRAM button repeatedly until the “ON” time for the event you wish to cancel is displayed.
2. Press the ON/OFF button.
3. “--:--” will be displayed, indicating the event is cancelled.
4. Repeat the above steps until all desired events are cancelled.
5. See 7-Day timeclock operation for programming sequence. Page 16.

Repeating a Days Events & Times

This feature allows you to automatically repeat the previous days' events and times, eliminating the need to re-enter them.

1. Go to the day you wish to copy and program your events and times. See "Programming the Events” page 19.
2. Press PROGRAM button until the following days, event 1, ON time is displayed. Display shows “SET”, “EVENT”, “1”, “TIMECLOCK” and “ON”.
3. Press the REPEAT button. You have now copied the previous days events into the current day displayed.
4. Repeat steps 2 and 3 for the remaining days.

Zone Controller Functions

Turning Zones ON & OFF

1. Press the Zone Button to turn zones on & off.
2. Lights are illuminated when a zone is turned on.

Notice:

• By default, a minimum of one zone must be left ON. This is controlled automatically by the wall control and will not allow you to turn off the last zone operating. However, it is possible to turn OFF all zones in some models. Contact your installer for more details.
• Switching the last zone off will cause the controller to divert to Zone 1 automatically.

Room Temperature Display

Press SELECT Up or Down Arrow Button and the room temperature will be displayed for 3 seconds.

Notice: The room temperature displayed can be the temperature at the wall controls or remote wall sensors, or a combination of both, depending on which zones are turned on.

Dual Wall Controller Operation

The air conditioner can be operated from either wall controller. Information displayed on both controllers is identical. The last wall controller used has priority.

Eg. 1: Using wall controller one, cooling operation is started. Both controllers show cooling mode. If another person uses wall controller two to select heating operation, both controllers will display heating operation.

Eg. 2: Using wall controller two, circulation operation is selected. Both controllers show circulation mode. If another person uses wall controller two to select cooling operation, both controllers will display cooling operation.

Setting the Upper & Lower Temperature Limits

This feature allows you to set the upper and lower temperature limits on your wall control. It can be used to limit the maximum set-temp (e.g., to 25°C) and minimum set-temp (e.g., to 20°C), or to lock the set-temp to a specific value (e.g., 22°C) by setting the upper and lower limits to be the same.

Default Upper and Lower Limits: Upper (30°C), Lower (16°C). Adjusting outside these defaults may cause system damage and void warranty.

Adjustable limits: Upper = 10°C to 32°C, Lower = 10°C to 32°C.

Note: The unit must be turned off before operating this procedure.

Setting the Lower Limit

1. Press the SELECT DOWN (1A) button, then press SET TEMP DOWN (1B) button in quick succession.
2. The display shows the “Lower” limit for 3 seconds, confirmed by the “LOW” indicator.
3. Use the SET-TEMP ARROW buttons to adjust the lower limit up or down.
4. After 5 seconds, the Lower limit is automatically accepted.

Setting the Upper Limit

1. Press the SELECT UP (1C) button, then press SET TEMP UP (1D) button in quick succession.
2. The display shows the “Upper” limit for 3 seconds, confirmed by the “HIGH” indicator.
3. Use the SET-TEMP ARROW buttons to adjust the upper limit up or down.
4. After 5 seconds, the Upper limit is automatically accepted.

Notice:

• You cannot adjust the upper limit below your current set-temperature.
• You cannot adjust the lower limit above your current set-temperature.

Operating Tips for Summer

1. Always test run your air conditioner a few weeks before the start of summer to ensure it's cooling sufficiently. If servicing is needed, have it done before the season begins.
2. On a HOT day: Start the air conditioner early in the morning to keep the house/office cool. Starting it when it's already very hot may take time to cool down. Keep curtains and windows closed, and stop drafts from doors. If using zones, turn off unused zones and close doors to those areas to provide more cooling capacity where needed. Ask your installer about minimum zones for your system.

Notice: Always allow the necessary amount of fresh air into rooms.

Operating Tips for Winter

1. Always test run your air conditioner a few weeks before the start of summer and ensure it's cooling sufficiently. If servicing is needed, have it done before the season begins.
2. On a COLD day: You can leave the air conditioner running overnight, lowering the set point by 2-4°C to save electricity. This prevents the house/office from becoming too cold, allowing quicker warming when the temperature is reset. Alternatively, start the air conditioner a couple of hours earlier in the morning. If outside conditions are very cold (approx. 7°C or lower), supplementary heating (electric or gas) may be used. Keep curtains and windows closed, and stop drafts from doors. If using zones, turn off unused zones and close doors to those areas to provide more heating capacity where needed. Ask your installer about minimum zones for your system.

Notice: Always allow the necessary amount of fresh air into rooms.

Energy Conservation Tips

1. For most efficient operation, keep windows and doors closed, including unused areas. This insulates against heat/cold and reduces dust, pollen, and noise. Occasionally allow fresh air into closed rooms/offices.
2. Overnight Use: In winter, set the thermostat down by 2°C to 4°C when going to bed and reset upon arising to save electricity. This also applies in summer, raising the temperature by 2°C to 4°C.
3. Extreme Temperatures: On days with extreme High or Low temperatures when the home is unoccupied, it can be practical to leave the air conditioner ON. To reduce energy costs, set the temperature up 2°C to 4°C (Cool Mode) for summer and down 2°C to 4°C (Heat Mode) for winter, then reset upon returning. This provides a more comfortable situation and reduces the high heat load on the system.

The normal setting recommended is 22°C for both summer and winter. Raising the set point by 1°C in summer or lowering it by 1°C in winter can save approximately 10% on electricity costs.

Zoning: If your air conditioner has zones, always turn off unused zones to save energy.

Maintenance

Wall Controller

Wipe the controller with a dry cloth. Do not use water.

Outlets and Return Air

Dust off the outlets and return air using a household duster regularly to prevent dust or dirt build-up.

Air Filter Cleaning

Clean every 4 weeks or when the filter light is displayed on the wall control.

1. Open the inlet grille. Caution: dust may fall from the return air grille.
2. Remove the filter by sliding it out from the grille.
3. Clean the filter using a vacuum cleaner or wash with water. Be gentle to avoid tearing the filter material.
4. Replace filter.

Notice:

• When the filter light is illuminated, check the air filter and clean if necessary, then press the ON/OFF button to extinguish the filter light.
• Always check with your installer for proper care and maintenance of the filter system.

Unit Maintenance:

1. Do not obstruct airflow.
2. Keep grass or plants away from the unit to ensure efficient operation.

Regular servicing by a qualified technician is recommended every 12 months for residential applications and every quarter for commercial applications.

Trouble Shooting

Before contacting your installer, please have your air conditioners Model No. and Serial No. with you. (See page 2)

Set-temp can't be adjusted.

• Check your wall control set-temp limits are not being exceeded.
• Check the upper and lower temperature are set correctly. (see page 24)

7-day timeclock is not turning the air conditioner on and off. (7-Day programmable model only)

• Check the timeclock is activated. (see page 18)

7-day timeclock is not accepting times you enter. (7-Day programmable model only)

• Check you don't have times overlapping from another day.
• Make sure you're not trying to set the time past the maximum allowable. (see programming past midnight page 19)

Before contacting your installer, please have your air conditioners Model No. and Serial No. with you. (See page 2)

Re-Setting the Wall Control

Re-Setting all functions for LM7 & LM24W

Note: This does not reset the 7-day timeclock features on the LM7 wall controller.

1. Make sure the air conditioner is in the OFF position.
2. Press and hold down FAN, press and release SET TEMP DOWN, press and release ON/OFF, and then release FAN. All display indicators will flash, with the ON/OFF indicators flashing for a further 20 seconds. The wall control is now reset to the original factory settings.

Re-Setting the timeclock (7-Day programmable model only)

Note: This will reset all the 7-Day timeclock programs.

1. Make sure the wall controller is in the OFF position.
2. Press and release “PROGRAM” button, then press and hold ON/OFF button for 3 seconds. All display indicators will light up for approximately 1 second, and then all timeclock programs will be re-set to the original factory settings.