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Only for training and service purposes
LGE Internal Use Only
Trouble Shooting
32
33
D-pipe (Inverter)
temp. high
(105˚C )
D-pipe (Constant)
temp. high
(105˚C )
• Discharge sensor
(Inverter) temp. high
• Discharge sensor
(Cons.) temp. high
• Check the discharge pipe sensor for INV.
• Check the install condition for over load.
• Check the leakage of refrigerant.
• Check the SVC V/V open.
• Refer to sensor resistance table.
• Check the discharge pipe sensor for Cons.
• Check the install condition for over load.
• Check the leakage of refrigerant.
• Check the SVC V/V open.
• Refer to sensor resistance table.
Display
code
Title
Cause of error
Check point & Normal condition
→
→
Is the resistance of the
sensor is 200k
Ω
at 25˚C?
Plug the sensor
on Indoor unit PCB
Estimate the Voltage
of each sensor.
Repair or Change the PCB.
Check Over load condition
- Refrigerant leakage
- Condenser is blocked
- Outdoor fan is locked
Unplug the sensor
on Outdoor unit PCB
Check the
Connector connection
Estimate the resistance
of each sensor.
Is it normal ?
Yes
Yes
No
Remove obstruction
Change outdoor fan
or motor
Change refrigerant
Yes
Yes
Yes
No
Change the sensor
Is the voltage of the
sensor is
4.5Vdc at 25˚C
No
Change the sensor
No
Correct connection
Check Flow Chart
