Fault diagnosis and Trouble shooting guide
Title
Display
code
Cause of errorMeaning
Discharge
temperature
(constant
speed
compressor)
33
• Abnormal of sensor for detecting temperature of
discharge gas from compressor
• Malfunction of circuit for detection of temperature
of discharge gas from compressor
• Shortage of refrigerant
• Malfunction of LEV
Due to over rising of
constant speed compressor
discharge temperature,
Compressor off has occurred
3 times in 1 hour
Trouble shooting Flow
Is indoor/outdoor
LEV normal?
Check and replace
LEV
No
Check and
replace PCB
Is the amount of
additive refrigerant
normal?
Add refrigerant
No
Yes
Check leakage of refrigerant
Does discharge
temperature really
rise?
Yes
No
Is discharge
temperature
normal ?
Replace
discharge
temperature
sensor
No
Yes
Yes
Does liquid
Injection operate
normally?
Check liquid SV
No
Yes
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