McQuay M5MSY18BR, Руководство пользователя

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M5MSY
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Troubleshooting
Troubleshooting
Fault Condition
When a malfunction of the air conditioner unit is detected, immediately switch off the main power supply before
proceeding with the following troubleshooting procedures.
The following are common fault conditions and simple troubleshooting tips. If any other fault conditions which
are not listed occur, contact your nearest local dealer. DO NOT attempt to troubleshoot the unit by yourself.
No Fault conditions Possible causes / corrective actions
1 The air conditioner unit will not resume after
power failure. • The auto restart function is not functioning.
Please turn on the unit with the wireless /
wired controller.
2 The air fl ow is too slow or room cannot be
cooled suf fi ciently.
• The air fi lter 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.
3 Discharge air fl ow has bad odor. • Cigarettes, smoke particles, perfume and
others, which might have adhered onto the
coil, may cause odor.
• Contact your nearest dealer.
4 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.
5 Water fl owing out from the air conditioner. • Switch off the unit and contact your nearest
dealer. This might be due to tilted installation.
6 Hissing air fl ow sound from the air conditioner
unit during operation.
• Liquid refrigerant fl owing into the evaporator
coil.
7 The wireless controller display is dim. • The batteries are discharged.
• The batteries are not correctly inserted.
• The assembly is not good.
8 Compressor operates continuously. • Dirty air fi lter. Clean the air fi lter.
• Temperature setting too low (cooling). Use
higher temperature setting.
• Temperature setting too high (heating). Use
lower temperature setting.
9 No cool air comes out during cooling cycle, or
no hot air comes out during heating cycle. • Temperature setting too high (cooling). Use
lower temperature setting.
• Temperature setting too low (heating). Use
higher temperature setting.
10 On heating cycle, warm air does not come out. • Unit is in defrost mode. Heating operation will
resume after defrost cycle ends.