Trouble Shooting Guide - LG AH-W096A0 Service Manual

Trouble Shooting Guide

4. Trouble Shooting Guide

Code
Description
No.
01 Problem in Remote Room Air sensor
02 Problem in Refrigerant (Inlet side) sensor
06 Problem in Refrigerant (Outlet side) sensor
08 Problem in Water Tank sensor
13 Problem in Solar-thermal sensor
16 Problems in sensors
17 Problem in Water-inlet sensor
18 Problem in Water-outlet sensor
19 Problem in Water-interlim sensor
I Error diagnosis and countermeasure flow chart
Is sensor properly
connected to PCB?
Yes
Is the resistance value
of sensor normal?
Yes
Change the PCB
Unplugged
10k
Check the resistance
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Only for training and service purposes
No
Connect properly to PCB
No
Change the sensor
Plugged
Ω
Ω
Check the voltage
Cause
• Incorrect • Resistance: 10k ohm at 25 centigrade
connection (unplugged)
between for Remote Room Air sensor
sensor and
• Resistance: 5k ohm at 25 centigrade
PCB
(unplugged)
for all sensors EXCEPT Remote Room
Air sensor
• PCB fault
• Voltage: 2.5Vdc at 25 centigrade
• Sensor fault
(plugged) (for all sensors)
• Refer resistance-temperature table to
check in different temperature
2.5Vdc
V
- 62 -
Normal Condition
LGE Internal Use Only