191
Error Codes
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ERROR CODES
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
troubleshooting of the Multi V product.
WARNING
Error No. 145
Error No. Description Details Causes
145
Master: 1451
Slave 1: 1452
Slave 2: 1453
Communication
error between
outdoor unit main
PCB and external
PCB.
Cycle controller of outdoor unit PCB is not
receiving signal from the external PCB.
1. Power wiring and / or communication cables
is / are not connected.
2. Outdoor cycle controller / external PCB is /
are defective.
Is the yellow communica-
tion LED of the external PCB
on?
Re-connect power wiring.
No
Yes
Is the communication cable
connected correctly?
No
Replace external PCB.
Re-connect communication cable.
Yes
Is the main PCB function-
ing normally?
Yes
No
Replace main PCB.
If the signal between the main PCB and the external PCB is normal, the communication LED on the external PCB blinks.
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