LG Multi V Manual page 78

Troubleshooting Guide
Error
Error Type
No.
25 Input Voltage high/low
I Error Diagnosis and Countermeasure Flow Chart
Is input voltage normal?
Yes
Is inverter PCB assembly normal?
Yes
Recheck power and installation condition
Measuring input voltage
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Error Point
Input voltage is over limited
value of the product (173V
or less, 289V or more)
Check
L1, L2 phase is 208/230V ±10%
No
¡ Check connection condition and wiring if power is
abnormal
No
Replace inverter PCB assembly
Inverter PCB assembly power wiring
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Main Reasons
1. Input voltage abnormal (L1,L2)
2. Outdoor unit inverter PCB assembly dam-
age (input voltage sensing part)
LGE Internal Use Only