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Troubleshooting
Service manual
35
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check the power supply to the indoor unit. See Power supply.
Possible cause:
▪
Faulty or disturbance of the power supply (imbalance),
▪
Phase missing,
▪
Power drop,
▪
Short circuit.
2
Perform a power reset. If the error disappears and is raised again after a
while, check for the presence of an external source causing electrical noise.
See External factors.
Possible cause:
External source may cause interference.
3
Perform a check of the indoor unit main PCB. See Indoor unit PCB.
Possible cause:
Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.19 C1-00 – Communication abnormality between main PCB and fan PCB
Trigger
Effect
Reset
When normal
transmission between
main PCB and fan PCB is
NOT conducted for a
certain duration
(15 seconds or more).
Unit will stop operating.
Power reset.
To solve the error code
1
Perform power reset. If error is NOT resolved:
▪
Perform a check of the indoor unit fan PCBs. See Indoor unit fan PCB.
Possible cause:
Faulty indoor unit fan PCB.
Perform a check of the indoor unit main PCB. See Indoor unit main PCB.
Possible cause:
Faulty indoor unit main PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
draft – 07/02/2022 15:12