69
Installation and Maintenance
Service Manual
No.
Malfunction
Name
Display Method of Indoor Unit
A/C status Possible Causes
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
47
Refrigerant
recovery
mode
Fo
Refrigerant recovery. The
Serviceman operates it for
maintenance.
48
Undened
outdoor unit
error
oE
Cool: compressor and outdoor fan stops
operation, while indoor fan operates;
Heat: compressor, outdoor fan and indoor
fan stop operation.
1. Outdoor ambient temperature
exceeds the operation range of unit
(eg: less than-20oC or more than
60oC for cooling; more than 30oC
for heating);
2. Failure startup of compressor?
3. Are wires of compressor not
connected tightly?
4. Is compressor damaged?
5. Is main board damaged?
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