40 CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08)
Troubleshooting
1.Remote Maintenance Electrical Circuit Refrigerant Circuit Others
Possible causes of trouble
Power failure
Main fuse broken
Loose connections
Faulty transformer
The voltage is too high or too low
The remote control is powered off
Broken remote control
Dirty air filter
Dirty condenser fins
The setting temperature is higher/lower than the
room‘s(cooling/heating)
The ambient temperature is too high/low when the
mode is cooling/heating
Fan mode
SILENCE function is activated(optional function)
Frosting and defrosting frequently
Capacity not sufficient
Loosen hold down bolts and / or screws
Poor air circulation
The air inlet or outlet of IDU/ODU is blocked
Interference from other signal sources
Packing rest in the unit
Unit will not start
✩ ✩ ✩ ✩
The power switch is on, but fan
will not start
✩ ✩ ✩ ✩
The temperature on the display
board cannot be set
✩ ✩
Unit is on, but the air stream is
not cold (hot)
✩ ✩ ✩
Unit runs, but shortly stops
✩ ✩ ✩
The unit starts up and stops
frequently
✩ ✩ ✩ ✩
Unit runs continuously but insuffi-
cient cooling(heating)
✩ ✩ ✩ ✩ ✩ ✩ ✩ ✩
Unit is noisy
✩ ✩
Test method / remedy
Check power supply
Check the main fuse
Inspect connections - tighten
Change the transformer
Test voltage
Replace the battery of the remote control
Replace the remote control
Clean or replace
Clean
Adjust the setting temperature
Check the operating conditions of the unit type
Adjust to cool mode
Turn off SILENCE function
Check the operating conditions of the unit type
Check heat load
Tighten bolts or screws
Close all the windows and doors
Remove the obstacles
Reconnect the power or press ON/OFF button
on remote control to restart
Remove packing material
Table 14.
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