LG Therma V AHBW A0 Series - Page 65

Trouble Shooting Guide
- 65 -
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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 200 kΩ
at 25 ˚C?
Plug the sensor
on 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
No
Change the sensor
Is the voltage of the
sensor is
4.5 V DC at 25 ℃
No
Change the sensor
No
Correct connection
Check Flow Chart