175
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. 71
Error No. Description Details Causes
71
Master: 711
Slave 1: 712
Slave 2: 713
Outdoor unit
converter CT
sensor error.
MICOM input voltage isn’t within 2.5V±0.3V at
initial power up.
1. Input voltage is not correct (R-T).
2. Damage to the outdoor unit converter PCB
(CT sensor component).
Are the power wiring
connections correct?
1. Check R / S / T / N wiring connections
2. Check noise filer wiring connections.
ĺ5HZLUHLISUREOHPVDUHIRXQG
No
Yes
Is the converter PCB
assembly correct?
No
Is the input voltage
normal?
1. Check if R-T / T-S / S-T phase voltage is
208-230V ± 10% or in the 414-528V range for
460V.
2. Check wiring and connections.
No
Yes
Yes
Recheck power and installation.
Replace converter PCB.
Converter PCB Assembly.
Measure Input Voltage.
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components. Actual component appearance
depends on model and system type.
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