DIAGNOSTIC CODES
No.
9
10
11
12
13
14
15
16
17
Description
If outdoor unit detects the condenser coil temperature sensor open
circuit or short circuit for 5-sec successively, condenser coil temperature
sensor malfunction will be reported. The unit can automatically
resume operation after the malfunction disappears. If condenser
temperature sensor malfunction occurs in fan mode, only the error
code is displayed and the indoor unit will operate normally.
If outdoor unit detects the outdoor ambient temperature sensor
open circuit or short circuit for 5-sec successively, outdoor ambient
temperature sensor malfunction will be reported. The unit can
automatically resume operation after the malfunction disappears.
If outdoor ambient temperature sensor malfunction occurs in fan
mode, only the error code is displayed and the indoor unit will
operate normally.
If outdoor unit detects the compressor discharge temperature
sensor is open circuit or short circuit for 5-sec successively after
the compressor has been operating for 3-min, outdoor discharge
temperature sensor malfunction will be reported. The unit can
automatically resume operation after the malfunction disappears.
If the wired Tether Controller detects open circuit or short circuit
of its temperature sensor for 5-sec successively, wired controller
temperature sensor malfunction will be reported.
System is defrosting outdoor coil.
If outdoor unit detects the compressor overload switch open within 3-sec
successively, the unit will report compressor overload protection. If the
fault occurs successively 3 times, the unit will not recover automatically.
Switch off the unit or re-energize the unit to eliminate this protection.
If indoor unit detects the evaporator coil temperature is higher
than protective temp. value, the unit will report overload protection.
The unit will restart operation after evaporator temperature is lower
than the protective temp. value and the compressor is stopped for
3-minutes. If the protection occurs over 6 times, the unit will not
recover automatically. Switch off the unit or re-energize the unit
to eliminate this protection.
If outdoor unit does not receive feedback signal from outdoor fan
motor for 30-sec successively when the fan motor is operating, an
outdoor fan motor malfunction will be reported. In this case, the unit
can automatically resume operation after stopping. If the malfunction
occurs 6 times within one hour, the unit will not recover automatically.
Switch off the unit or re-energize the unit to eliminate this malfunction.
After the compressor starts operation in heating mode, if the outdoor
unit detects the difference between evaporator temperature and
indoor ambient temperature is lower than the protective value for
10-min successively, Reversing Valve Malfunction will be reported
and the outdoor unit will stop operation. If the malfunction occurs
3 times, the unit will not recover automatically. Switch off the unit
or re-energize the unit to eliminate this malfunction.
Error
Code
F2
F3
F4
F5
H1
H3
H4
H6
U7
Malfunction
Name
Indoor
Condenser Coil
Temperature
Sensor
Malfunction
Outdoor
Ambient
Temperature
Sensor
Malfunction
Compressor
Discharge
Temperature
Sensor
Malfunction
Wired Controller
Temp. Sensor
Malfunction
Defrost Mode
Compressor
Overload
Protection
Overload
Protection
Outdoor
Fan Motor
Malfunction
Reversing or
4-way Valve
Malfunction
Origin of
Malfunction
Condenser
Coil
Temperature
Sensor
Outdoor
Ambient
Temperature
Sensor
Compressor
Discharge
Temperature
Sensor
Wired Tether
Controller
Temp. Sensor
No Failure
Compressor
Overload
Switch
Evaporator
Temperature,
Condenser
Temperature
Outdoor
Fan Motor
Reversing/
4-way Valve
Error Codes
20
