Error No. 25 - LG Multi V5 Service Manual

ERROR CODES

Error No. 25

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Error No. Description
25
Input voltage to
the outdoor unit
Master: 251
is too high or too
Slave 1: 252
low.
Slave 2: 253
Are the power wiring
connections correct?
Is the input voltage
normal?
Are the Inverter
PCB assembly phase
bridge diode connections
correct?
Does the Inverter PCB LED
display an error?
Recheck power and installation.
150
Outdoor unit has an input voltage of <180V or
>253V (for 208-230V units), or an input voltage
of <414V or >528V (for 460V units).
No
Yes
No
Yes
No
Yes
No
Yes
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Details
1. Input voltage is abnormal.
2. Outdoor unit inverter PCB assembly is
Check R(L1) / S(L2) / T(L3) wiring connections.
Check if R~S / S~T / T~R phase voltage is <180V or >253V
(for 208-230V units), or <414V or >528V (for 460V units).
Check the phase bridge diode and Inverter IGBT connections.
Replace Inverter PCB assembly.
Causes
damaged (input voltage sensor compo-
nent).