LG AB-H1208VA0 Service Manual page 9

Troubleshooting Guide
1. Error indicator
• The function is to self-diagnosis air conditioner and express the troubles if there is any trouble.
• Error mark is displayed on wired-remote controller and LED of outdoor unit control board.
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
• After error occurs, if error is released, error LED is also released simultaneously.
❈ Indoor Error
Error Code
1 Air sensor (open/short)
2 Inlet pipe sensor
Communication(Indoor ↔ Wired R/Control) Communication Poorly
3
4 Drain pump/ Float switch
Communication(Indoor ↔ Outdoor)
5
6 Outlet pipe sensor
7 Different mode operation
9 EEPROM check sum
10 BLDC motor fan lock
Communication(indoor ↔ Fan)
15
❈ Outdoor Error
Error Code
24 High Pressure Switch operation
33 D-Pipe Temp. High
44 Air Sensor(open/short)
45 Outlet Pipe Sensor(open/short)
47 D-Pipe Sensor(open/short)
48 S-Pipe Sensor(open/short)
51 Excess Capacity
54 Phase error
Contents
Contents
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Case of error
Open / Short
Open / Short
Float switch Open
Communication Poorly
Open / Short
Different mode operation
Check sum mismatching
Motor not operation
Communication Poorly
Case of error
High P/S operates 5times for1hour
D-Pipe Temp ≥120°C
Open/Short
Open/Short
Open/Short
Open/Short
Indoor load excesses 120K
Continually 5times error
Indoor Status
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Indoor Status
Off
Off
Off
Off
Off
Off
Off
Off