Troubleshooting Guide
7
• Supplied power is not normal
• Indoor/outdoor fan is locked
• Too much refrigerant
• Defect in current sensing circuit in outdoor pcb assembly
Over current Error
(CT2)
Supplied voltage to
Outdoor pcb is about
AC 220/240V ?
Does indoor / outdoor fan work
normally ?
YES
No
Check power source
No
Check indoor / outdoor fan and
adjust.
Check flow
Refrigerant pressure is right ?
YES
No
Check refrigerant pressure
and adjust.
Current sensing circuit is right ?
YES
No
Check current sensing circuit.
- check CT is damaged in outdoor pcb
(output wire is disconnected to pin or not)
- BD01N is inserted in right position
(refer marking on pcb and component)
- Spec of R01N (1kΩ), R02N (1.65kΩ) is correct
- Direction of diode (D01N, D02N) is right
Description Cause of error
Error code
- 64 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
To Next Page
Loading...
