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Patrick BatesAug 14, 2025
What to do if ActronAir LM24 displays fault code?
- Llee94Aug 14, 2025
If 'EXX' is displayed on the wall controller, record the digits following 'E' and contact your installer.
To Next PageTo Next PageWhat to do if ActronAir LM24 displays fault code?
If 'EXX' is displayed on the wall controller, record the digits following 'E' and contact your installer.
Why is ActronAir LM24 cooling or heating not sufficient?
Insufficient cooling or heating can occur if the return air filter is clogged with dust and dirt. Ensure the air inlet and outlet on the outdoor unit are not blocked. Also, the outside temperature being above or below the design conditions can affect performance.
Why is my ActronAir Network Router making noises?
Various noises can occur during operation: * A swishing or gurgling noise might be heard when heating or cooling starts or stops, caused by refrigerant flow. * A whooshing noise from the outdoor unit can occur during defrost as the refrigerant changes direction. * The outdoor unit may be louder than normal on start-up as the compressor reaches speed and pressure. * The compressor might generate more noise than usual during defrost operation.
How to troubleshoot ActronAir LM24 when the system does not start?
If the system doesn't start: * Ensure that 5 minutes has passed since turning it on, as the system has safety timers. * Verify that the thermostat settings are correct. * Check that the thermostat set-point is low enough for cooling or high enough for heating.
What to do if air does not flow from ActronAir LM24 indoor unit?
If air isn't flowing from the indoor unit: * Check if the zones are switched on (if fitted). * Note that during heating, air might not flow for about 15 seconds after startup to prevent cold drafts. * Also, during the outdoor unit's defrost cycle in heating mode, the indoor fan might not operate for several minutes to prevent cold air from blowing into the rooms.
Why set-temp can’t be adjusted on ActronAir Network Router?
If the set-temp cannot be adjusted, check that your wall control set-temp limits are not being exceeded and that the upper and lower temperature limits are set correctly.
Why is water coming from my ActronAir Network Router outdoor unit?
Water coming from the outdoor unit during heating operation is normal. It's due to water forming on the heat exchanger.
Why is there steam coming from my ActronAir LM24 outdoor unit?
Steam from the outdoor unit is caused by the defrosting process during heating operation in cold conditions.
Why ActronAir LM24 Network Router 7-day timeclock is not accepting times I enter?
If the 7-day timeclock isn't accepting the times you enter, ensure that you don’t have overlapping times from another day and that you're not trying to set the time past the maximum allowable.
General| Brand | ActronAir |
|---|---|
| Model | LM24 |
| Category | Network Router |
| Language | English |
Explains summer (cooling) and winter (heating) operation cycles.
Covers panel access, guards, and hot components to prevent injury.
Highlights qualified installer, filter importance, and crankcase heater precautions.
Location of AC model and serial numbers on the outdoor unit.
Location of the wall controller model number inside the flip lid.
Fields for recording installer company, phone, and technician name.
Covers auto-restart after power failure and auto defrost function.
Details dual control, zoning, and room temperature display features.
Explains filter clean light and self-diagnosis capabilities.
Description of the LCD display.
Functions of ON/OFF, MODE, FAN, and TIMER buttons.
Functions of SET TEMP, SELECT, PROGRAM, REPEAT/EXIT buttons.
Controls for Zone 1 through Zone 8.
Indicators for DAY, TIMER, EVENT, ON/OFF, RUN, AUTO, HEAT, COOL, FILTER, CONT, LOCK.
Displays for ROOM TEMP, SET TEMP, AM/PM, and Time Clock.
Indicators for LOW, MED, and HIGH fan speeds.
Indicators for Event, 1 & 2, and Lock Symbol.
Procedure for adjusting the LCD brightness level.
Procedure for powering the LCD backlight on or off.
Steps to turn on the ON/OFF button light.
Steps to turn off the ON/OFF button light.
Steps to select COOL mode, set temperature, and adjust fan speed.
How to turn the system off after cooling operation.
Steps to select HEAT mode, set temperature, and adjust fan speed.
How to turn the system off after heating operation.
Steps to select AUTO mode, set temperature, and adjust fan speed.
How to turn the system off after auto operation.
Steps to activate and adjust fan speed for fan-only mode.
How to turn the system off after fan only operation.
Explanation of HIGH, MED, LOW, and ESP fan speed modes.
Explanation of CONT HIGH, CONT MED, CONT LOW, CONT ESP modes.
Procedure for setting the desired hours for the system to turn OFF.
How to cancel or change the set hours for the off timer.
Procedure for setting the desired hours for the system to turn ON.
How to cancel or change the set hours for the on timer.
Restrictions on timer function for auto mode and circulation.
How the 7-day clock allows ON/OFF programming for each day.
A sample configuration showing programmed ON and OFF times.
Procedure to cancel a specific programmed event.
Step-by-step guide to set the current time and day.
Explanation of how the timeclock retains settings during power failure.
Steps to enable the 7-day timeclock functionality.
Steps to disable the 7-day timeclock functionality.
Guide to setting ON and OFF times for programmed events.
Information on setting events that cross midnight.
Important notices regarding event programming.
How to remove a previously programmed event.
How to restore a cancelled programmed event.
Method to repeat programmed events for other days.
How to turn individual zones ON and OFF.
How to view the current room temperature.
Default zone settings and last zone behavior.
How two wall controllers operate a single system.
Demonstrates how dual controllers interact during operation changes.
Procedure to set the minimum allowable temperature.
Procedure to set the maximum allowable temperature.
Constraints and recommendations for setting temperature limits.
Advice on pre-season checks and servicing.
Strategies for efficient cooling during hot weather.
Guidance on maintaining fresh air circulation in rooms.
Advice on pre-season checks and servicing.
Strategies for efficient heating during cold weather.
Guidance on maintaining fresh air circulation in rooms.
Tips on insulation, thermostat settings, and occupancy.
How to use zoning features to save energy.
Instructions for cleaning the controller with a dry cloth.
Advice on dusting air outlets and return air grilles.
Procedure for cleaning and replacing the air filter.
Warnings about not obstructing airflow and keeping units clear.
Addresses problems with the system not starting.
Troubleshooting for no air flow from the indoor unit.
Diagnosing insufficient cooling or heating.
Explains steam, water, and noises from the outdoor unit.
Guidance on understanding and reporting fault codes (EXX).
Addresses issues where set-temp cannot be adjusted.
Problems with timeclock turning system on/off or accepting times.
Procedure to reset LM7 and LM24 controllers to factory defaults.
Procedure to reset LM7 timeclock programs to factory settings.
