McQuay M5MSX 020 A, Руководство пользователя

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Troubleshooting
If there is any malfunction of the air conditioner unit detected, please sitch off the main power supply
immediately before proceeding with the following troubleshooting procedures as safety precautions.
The following are some common fault conditions and simple troubleshooting tips. If encounter any faulty
conditions which are not listed, please contact nearest dealer or service maintenance. DO NOT attempt to
troubleshoot the unit by yourself.
56
No Fault conditions Possible causes / corrective actions
1 The air conditioner unit will not start straight
away after a power failure or restart unit.
•
The air conditioner unit has a 3 minutes restart
protection. Please wait for the unit to restart by
leaving the main power on.
2 The compressor does not operate 3 minutes
after the air conditioner unit is started. •
Protection against frequent starting.
•
Wait for 3 or 4 minutes for the compressor to start
operating by it self.
3 The airflow is too slow or room cannot be
cooled sufficiently. •
The air filter is dirty.
•
The doors and windows are opened.
•
The air suction and discharge of both indoor and
outdoor units are clogged or blocked.
•
The regulated temperature or temperature setting
is not low enough.
4 Discharge airflow has bad odor.
•
Odour may be cause by cigarettes, smoke
particles, perfume and others, which might have
adhered onto the coil.
•
Contact your nearest dealer.
5 Condensation on the front air grille of the indoor
unit. •
This is caused by air humidity after an extended
period of operation.
•
The set temperature is too low. Increase the
temperature setting and operate the unit at high
fan speed.
6 Water flowing out from the air conditioner. •
Switch off the unit and contact your nearest
dealer. This might be due to tilted installation.
7 Hissing airflow sound from the air conditioner
unit during operation.
•
Liquid refrigerant flowing into the evaporator coil.
8 The indoor unit’s LED indication keeps blinking.
•
Check the fault indication listed under section
INDICATOR LIGHTS .
•
If LED display indicates defrost operation, ignore
it. This shows that the outdoor unit is defrosting
the ice at the outdoor unit.
•
For other LED display, follow the COMPRESSOR
STOPPED TROUBLESHOOTING
INSTRUCTIONS at next section.
9 The outdoor unit will not operate and the indoor
unit’s LED indication does not blink. •
Power failure or fuse needs to be replaced. Check
power supply.
•
The main power plug is disconnected or the circuit
breaking is turned off.
•
It is possible that the delay timer has been set
incorrectly.
•
If the problem persists after all these verifications,
follow the COMPRESSOR STOPPED
TROUBLESHOOTING INSTRUCTIONS at next
section.