Instructions / Assembly

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Troubleshooting
5 times OFF
EC 53
Outdoor room temperature sensor T4 is in open circuit or has short
circuited
TS22
5 times OFF
EC 52
Condenser coil temperature sensor T3 is in open circuit or has short
circuited
TS22
5 times OFF
EC 54
Compressor discharge temperature sensor TP is in open circuit or has
short circuited
TS22
5 times OFF
EC 55
IGBT temperature sensor TH is in open circuit or has short circuited TS22
5 times OFF
EC 56
Evaporator coil outlet temperature sensor T2B is in open circuit or has
short circuited(for free-match indoor units)
TS22
5 times ON
EC 51
Outdoor unit EEPROM parameter error TS16
12 times OFF
EC 07
The outdoor fan speed is operating outside of the normal range(for
some models)
TS19
7 times FLASH
PC 00
IPM malfunction or IGBT over-strong current protection TS25
2 times FLASH
PC 01
Over voltage or over low voltage protection TS26
3 times FLASH
PC 02
Top temperature protection of compressor or High temperature
protection of IPM module
TS31
5 times FLASH
PC 04
Inverter compressor drive error TS27
7 times FLASH
PC 03
High pressure protection or low pressure protection (for some models) TS28
14 times OFF
ec 0
Outdoor unit malfunction(for some models) TS32
15 times OFF
FH 07
Communication malfunction between indoor unit and auto-lifting
panel
TS36
-- --
EH A
Communication malfunction between external fan module and indoor
unit(for some models)
TS35
4 times OFF
EH 3A
External fan DC bus voltage is too low protection(for some models) TS35
4 times OFF
EH 3
External fan DC bus voltage is too high fault(for some models) TS35
1 time ON
--
Indoor units mode conflict(match with multi outdoor unit) --
4 times FLASH
PC 0L
Low ambient temperature protection(for some models) TS32
For other errors:
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a temperature reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement. If the unit
responds, the display board requires replacement.
LED flash frequency:
... ...
Error Display on T
wo Way Communication Wired Controller
Display
Malfunction or Protection
Solution
EH 3
Communication error between wire controller and indoor unit((for KJR-120X series wired
controller)
TS34
The other error codes displayed on the wire controller are same from those on the unit.
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