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Troubleshooting
Service manual
53
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
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.
3.2.49 64-01 – Indoor air thermistor malfunction
VAM-J8 units
Trigger
Effect
Reset
Indoor air thermistor
open or short‑circuit.
Unit will continue
operating.
Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the indoor air thermistor. See Thermistors.
Possible cause:
Faulty indoor air thermistor.
2
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.
3.2.50 64-02 – Indoor air thermistor out of range
VAM-J8 units
Trigger
Effect
Reset
Indoor air thermistor
read‑out is out of range.
Unit will continue
operating.
Auto reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the indoor air thermistor. See Thermistors.
Possible cause:
Faulty indoor air thermistor.
2
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.
draft – 07/02/2022 15:12