49
Troubleshooting
Troubleshooting
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 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.
• Cigarettes, smoke particles, perfume and
others, which might have adhered onto the
coil, may cause odor.
• 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
Compressor operates continuously.
• Dirty air filter. Clean the air filter.
• Temperature setting too low (cooling). Use
higher temperature setting.
• Temperature setting too high (heating), Use
lower temperature setting.
Summary of Contents for UATN60CGXY1
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Page 4: ...Table of Contents ii...
Page 48: ...44 Wiring Diagrams Wiring Diagrams Model UATN60 90C...
Page 49: ...45 Wiring Diagrams Model UATN120 150 180C...
Page 50: ...46 Wiring Diagrams Model UATN210 240 300C...
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