What to do if my McQuay Air Conditioner is not cooling enough?
If your McQuay Air Conditioner isn't cooling sufficiently, it might be due to a dirty indoor or outdoor coil. Try cleaning the coil. Also check for any obstructions at the air inlet or outlet of the indoor or outdoor unit and remove them. It could also be caused by a refrigerant short charge or leakage, in which case you should add refrigerant and repair the leakage.
How to fix a McQuay MWH Air Conditioner that won't turn on (no cooling/heating)?
If your McQuay Air Conditioner fails to start, it could be due to a faulty contactor, contacts or motor. Try changing the contactor or the contacts. You might also need to repair or change the motor.
Why McQuay MWH shows high side low side?
If your McQuay Air Conditioner is showing a high side low side issue, it could be due to: * An undercharge of refrigerant. * Refrigerant leakage. * A clogged or dirty air filter in the indoor unit. * A locked indoor fan (during cooling). * A defective defrost control causing outdoor coil freeze-up (during heating). * A locked outdoor fan (during heating).
General| Brand | McQuay |
|---|---|
| Model | MWH |
| Category | Air Conditioner |
| Language | English |
Lists McQuay models, their generic names, and brands.
Provides conversion factors for various units like Btu/hr, kCal/Hr, kW, PSI, etc.
Matrix showing compatibility between mainboards and handset types.
Details operation for the G6 handset, including buttons and modes.
Details operation for the G7 handset, including buttons and modes.
Details operation for the G11 handset, including buttons and modes.
Details operation for the G17 handset, including buttons and modes.
Details operation for the GS01 handset, including buttons and modes.
Details operation for the APJ1 handset, including buttons and modes.
Details operation for the SLM3 handset, including buttons and modes.
Details operation for the SLM8 handset, including buttons and modes.
Details operation for the Sequential LCD controller.
Details operation for Netware 3 and Netware 3C controllers.
Details operation for the Rooftop Panel controller.
Details operation for the Chiller Panel controller.
Details operation for the MC301 controller.
Details operation for the MC303 controller.
Configuration for auto restart feature via jumper.
Three selections for hot keep function based on indoor coil temperature.
Dip switch settings for sequential controller SQ2.0.
Jumper selection for W1V3 fan coil unit configuration.
Jumper selection for W2.0 fan coil unit configuration.
Hardware settings for SLM8 option via jumpers.
Components needed to add auxiliary heater to U1.5 heatpump PCB.
Conversion of cooling-only models to multi-split units.
Procedure for replacing U1.5 PCB with L208A PCB.
Conversion from WMF U1.4 to L2EF PCB.
Conversion of SQ board for long-distance wiring.
Using the wired controller as a room sensor.
Diagnosing faults using LED indicators for various McQuay unit series.
Error codes and their meanings for different handset types.
MDS diagnosis procedures for indoor and outdoor units.
General troubleshooting steps for common unit malfunctions.
Troubleshooting guide based on refrigerant pressure readings.
Resistance values for temperature sensors at various temperatures.
Compatibility matrix for MDS indoor and outdoor PCBs.
Dip switch settings for MDS outdoor unit capacity.
Specifications for cable lengths of wired handsets.
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