What does error code UH mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code UH, it indicates that the anti-freeze function is active in another room. Check which indoor unit is showing error A5. Also, check the supply voltage and verify the model names of the indoor and outdoor units.
Why is my McQuay M5MSY18BR Air Conditioner not blowing warm air in heating mode?
If warm air isn't coming out of your McQuay Air Conditioner during the heating cycle, it might be in defrost mode. The heating operation will resume automatically after the defrost cycle is complete.
Why does my McQuay M5MSY18BR Air Conditioner compressor run continuously?
If the compressor in your McQuay Air Conditioner is running non-stop, there are a few potential causes. A dirty air filter can cause this issue, so start by cleaning it. Also, check your temperature settings: if it's set too low for cooling or too high for heating, adjust it accordingly.
What to do if my McQuay Air Conditioner is leaking water?
If you notice water leaking from your McQuay Air Conditioner, it might be due to improper installation where the unit is tilted. In this case, switch off the unit and contact your nearest dealer.
Why is my McQuay M5MSY18BR not blowing cold/hot air?
If your McQuay Air Conditioner isn't producing cool air during the cooling cycle or hot air during the heating cycle, the temperature setting might be the problem. If cooling, try setting a lower temperature. If heating, try setting a higher temperature.
What does error code U0 mean on my McQuay M5MSY18BR?
If your McQuay Air Conditioner displays error code U0, it indicates insufficient gas. Check the sensor connection, the stop valve, and look for any gas leaks. Also, check the EXV and H8.
What does error code H0 mean on my McQuay Air Conditioner?
If your McQuay Air Conditioner displays error code H0, it indicates an abnormality in the compressor sensor system. Check the reactor connection and the compressor connection. Measure the resistance value between the reactor terminals and between the compressor terminals.
What does error code E7 mean on my McQuay Air Conditioner?
If your McQuay Air Conditioner displays error code E7, it indicates the outdoor DC fan motor is locked. Check the fan motor connection and inspect for any foreign objects around or inside the fan.
What does error code C4 mean on my McQuay M5MSY18BR?
If your McQuay Air Conditioner displays error code C4, it indicates a short or open in the indoor heat exchanger thermistor. Check the connector connection and the sensor resistance value.
What does error code A5 mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code A5, it indicates an antifreeze issue. Check the air passage and the intake air filter. Inspect for dust accumulation on the indoor coil. Also, check the wiring, piping, and the EXV. Further, check the indoor coil sensor resistance value, refrigerant level and room sensor resistance value.
General| Category | Air Conditioner |
|---|---|
| Compressor Type | Rotary |
| Type | Split |
| Power Supply | 230 V / 50 Hz |
| Indoor Unit Noise Level | 38 dB |
| Outdoor Unit Noise Level | 52 dB |
Explains the coding system for indoor unit model names and features.
Covers outdoor/indoor unit installation, piping, and wiring.
Provides electrical wiring diagrams for outdoor units.
Provides electrical wiring diagrams for various indoor units.
Lists common faults, corrective actions, and indicator lights.
Explains error codes, diagnosis steps, and LED indicators.
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