Service And Maintenance - McQuay MCM 020 D Manual

Trouble Shooting
When any air-conditioner malfunction is noted, immediately switch off the power supply to the unit, and
contact the local dealer, if necessary. Some simple troubleshooting tips are given below :
FAULT
1. Fan does not work 3 minutes after
starting
2. The air conditioning unit does not
work
3. The air conditioning unit does not
blow sufficiently
4. The remote control light is deficient •
5. Air discharge flow has a bad odor
6. Condensation on the air grille of
indoor unit
7. The water flow of air conditioning
unit
8. The air conditioning unit is noisy
• Protection against the frequent starting. Wait 3 or 4 minutes.
•
Power failure or you must be replaced the fuse.
•
The power plug is disconnected.
•
Possibility of making a programming error in the controller.
•
If the fault persist after these verifications, contact your installer.
•
The air filter is dirty.
•
The doors or windows are open.
•
The air entrance and exit are clogged.
•
The regulate temperature is not high enough.
The batteries are discharge.
•
The batteries are not correctly inserted.
•
The assembly is not good.
•
This odor can be caused by cigarette smoke particles, perfume,
sweat, which stick to the coil.
•
Check if there is any moisture on the walls, garment, other.
•
Check the drain pan.
•
This is due to air humidity after a long time of operation.
•
The unit has a lower temperature point, increase the point and
operate at high speed.
• Check the condensate evacuation.
• "Air flow noise" : refrigerant fluid admission in evaporator.
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CAUSE