Self-Diagnosis Function - LG FM15AH UL3 Svc Manual

1. Self-diagnosis Function

1.1 Error Indicator (Indoor)
• The function is to self-diagnosis air conditioner and express the troubles if there is any trouble.
• Error mark is displayed on display window of indoor units and 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.
Ex) Error 21 (DC Peak)
10 digit
LED
1 digit
LED
1.2 Indoor Error
Error
code
01 Air sensor (open/short)
02 Inlet pipe sensor
Communication(Indoor ↔ Wired R/Control)
03
04 Drain pump/ Float switch
Communication(Indoor ↔ Outdoor)
05
06 Outlet pipe sensor
07 Different operation mode
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Only for training and service purposes
1 digit 10 digit
2 Times
1 Sec.
1 Time
2 Sec.
Contents
2 Times
1 Sec.
1 Time
2 Sec.
Case of error
Open / Short
Open / Short
Communication Poorly
Float switch Open
Communication Poorly
Open / Short
Different operation mode
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5. Trouble Shooting
2 Times
1 Sec.
1 Time
Indoor
Status
Off
Off
Off
Off
Off
Off
Off
LGE Internal Use Only