What does error code E6 mean on my McQuay Air Conditioner?
If your McQuay Air Conditioner displays error code E6, it indicates a compressor lock or start-up error. Check with an inverter checker and inspect the EXV.
What does error code E5 mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code E5, it indicates a compressor motor lock or overload. Check the connection on the discharge pipe sensor and the discharge pipe sensor resistance value. Also, check the EXV and the refrigerant line for any blockage or shortage.
What does error code E4 mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code E4, it indicates low pressure protection. Check the stop valve and the low pressure sensor connection. Check the low side pressure and voltage, as well as the outdoor coil sensor connection. Additionally, check the sensor resistance value and the refrigerant level.
How to restart McQuay M5MSY18BR Air Conditioner after power failure?
If your McQuay Air Conditioner doesn't automatically restart after a power outage, the auto restart function may not be working. Turn on the unit manually using the wireless or wired controller.
What does error code E1 mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code E1, it indicates an error with the outdoor PCB. Try restarting the system. If the problem persists, replace the outdoor PCB. Also, check to ensure that the unit is grounded and check the power supply waveform.
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 A6 mean on my McQuay M5MSY18BR Air Conditioner?
If your McQuay Air Conditioner displays error code A6, it indicates an issue with the indoor fan motor. Check the indoor fan by rotating it with your hand. If it doesn't rotate smoothly, replace the indoor fan motor. Check the fan motor voltage, and if it's not at the rated voltage, replace the indoor PCB. For AC motors, check the fan capacitor's conductivity and replace the fan capacitor if there's conductivity.
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.
What does error code A3 mean on my McQuay Air Conditioner?
If your McQuay Air Conditioner shows error code A3, it indicates a water pump error. Check for a short circuit and the connection on the drain pump. Try restarting the system. Also, check the drain water level and the float switch connection.
What does error code A1 mean on my McQuay M5MSY18BR?
If your McQuay Air Conditioner displays error code A1, it indicates an Indoor PCB error. First, check the connector connection. If the issue persists, replace the indoor PCB.
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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