Table of Contents
Advertisement
Display
Title
code
DC Comp Position Error,
26
LOCKING Detection
WARNING
Before checking PCB(Inverter) or each outdoor electric parts, wait for 3 minutes after the power is off. When measuring at standby
state of power supply, after checking the measurement mode of the meter, be careful of the short-circuits with other parts.
n Error Diagnosis and Countermeasure Flow Chart
Is installation
condition normal?
Yes
Are the resistance
Between each phase and
insulation resistance of Inverter
compressor normal?
Yes
Is compressor
Wire connection
condition normal?
Yes
Is inverter PCB assembly normal?
Yes
Recheck power and installation condition
Cause of error
• Compressor
Starting fail error
1. Check Pipe clogging/distortion
2. Check Covering (Indoor/Outdoor Unit)
3. Check EEV connector assemble condition/normal
No
operation
4. Check refrigerant pressure
→ Reassemble or manage if abnormality found
1. Check resistance between each terminal of compressor
2. Check insulation resistance between compressor
No
terminal and pipe
→ Replace compressor if abnormality found
1. Check inverter PCB assembly U,V,W connector
connection condition
2. Check wire disconnection and wiring
No
3. Check compressor terminal connection condition
(bad contact)
→ Reassemble if abnormality found
Check inverter PCB assembly IPM normality
No
→ Replace inverter PCB assembly
- 93 -
Check point & Normal condition
• Check the connection of comp wire "U,V,W"
• Malfunction of compressor
• Check the component of "IPM", detection parts.
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes.
- Quick Links:
- Model Information
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
