Instructions / Assembly

20 TROUBLESHOOTING INDOOR UNIT
Display mode
Status description
Green light always on No system alarm and error, normal standby
Red light always on Evaporator temperature sensor (T2) failure
Green light always on &
yellow light flashing
Evaporator high and low
temperature protection
Green light flashing system is in normal operating status
T2 Evaporator temperature sensor failure
Error
No
Check the sensor to see if it
is good or not?
Error
If properly connected, then
replace the sensor or PCB
Replace the bad sensor
Check the connection between
sensor and PCB
No
Check PCB
Is sensor in an open circuit?
Does the sensor
have a short circuit?
Is component damaged?
Wet?
Replace PCB
Evaporator temp. sensor abnormal
Error
INDOOR UNIT
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