Troubleshooting - McQuay 5SL/SL15C/CR Installationsanleitung

If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit.
Check the following fault conditions and causes for some simple trouble shooting tips.
Fault
1. The compressor does not operate 3 minutes after the air
conditioner unit is started.
2. The air conditioner unit does not operate.
3. The air flow is too low.
4. Discharge air flow has bad odor.
5. Condensation on the front air grille of the indoor unit.
6. Water flowing out from the air conditioner unit.
7. Hissing air flow sound from the air conditioner unit during
operation.
If the fault persists, please call your local dealer / serviceman.
No Event
1 Room sensor open or short
2 Indoor coil sensor open
3 Outdoor coil sensor open
4 Compressor overload/
Indoor coil sensor short/
Outdoor coil sensor short
5 Gas leak
6 Water pump fault
7 Outdoor defrost
8 Outdoor coil sensor exist
(MS model)
9 Hardware error (tact switch
pin short)
Note: CDF LED : Cool/Dry/Fan LED, turns on in these modes
The unit will not detect sensor missing when the compressor is ON

TROUBLESHOOTING

- Protection against frequent starting. Wait for 3 to 4 minutes for
the compressor to start operating.
- Power failure, or the fuse needs to be replaced.
- The power plug is disconnected.
- It is possible that your delay timer has been set incorrectly.
- If the fault persist after all these verifications, please
contact the air conditioner unit installer.
- The air filter is dirty.
- The doors or windows are open.
- The air suction and discharge are clogged.
- The regulated temperature is not high enough.
- Odors may be caused by cigarettes, smoke particles, perfume
etc. which might have adhered onto the coil.
- This is caused by air humidity after an extended long period of
operation.
- The set temperature is too low, increase the temperature setting
and operate the unit at high fan speed.
- Switch off unit and call dealer.
- Refrigerant fluid flowing into the evaporator coil.
CDF LED Timer LED
Blink 1 time -
Blink 2 times -
Blink 3 times -
Blink 1 time
Blink 3 times
Blink 2 times
-
Blink 5 times
Blink 6 times
1-15
Causes / Action
Others LEDs Error Code
Blink Fan
Blink Sleep
Blink Dry
Blink Cool
Blink Cool & Dry
Blink Cool & Fan
Blink Heat
Blink Cool & Heat
Blink Heat, Cool,
follow by Fan, Dry
Blink E1
Blink E2
Blink E3
Blink E4
Blink E5
Blink E6
-
Blink E7
Blink E8