Multi-Split Systems - McQuay

TrouboubleshootingWhen any air conditioner malfunction is noted, immediately switch off the power supply to the unit and contactthe local dealer, if necessary. Some simple troubleshooting tips are given below :TROUBLE PROBABLE CAUSE SUGGESTED ACTION1. Fan does not work 1. No power supply 1. Check power supply2. Fan capacitor faulty 2. Contact local dealer3. Fan motor faulty 3. Contact local dealer4. Switch faulty 4. Change switch2. Fan works, but compressor doesnot work1. Thermostat setting too high 1. Reset thermostat2. Compressor capacitor faulty 2. Contact local dealer3. Compressor faulty 3. Contact local dealer4. Compressor contactor faulty 4. Contact local dealer3. Both fan and compressor does notwork1. Power failure 1. Operate when power supply resume2. Starter trip 2. Reset starter3. Fuse blown in power switch or operating unit 3. Check and replace fuse4. Air-Conditioner works but coolingnot satisfactory1. Thermostat setting too high 1. Reset thermostat2. Door and/or windows not closed 2. Close door and/or windows3. Condenser coil dirty 3. Clean condenser coil4. Some objects blocking the inlet and/or outlet of 4. Remove the objectsthe unit5. Contact local dealer5. Refrigerant charge too low216