3
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Troubleshooting
Service manual
41
VAM350~200 EKVDX32~100A2VEB
VRV system air conditioner
ESIE22-07 – 2022.02
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.2.28 CA-00 – Discharge thermistor abnormality
EKVDX-A units
Trigger
Effect
Reset
Indoor unit discharge
thermistor read‑out is out
of range.
Unit will stop 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 unit discharge thermistor. See Thermistors.
Possible cause:
Faulty indoor unit discharge 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.
3.2.29 CH-00 – CO2 sensor alarm
VAM-J8 units
Trigger
Effect
Reset
Optional CO
2
sensor is
disconnected or
short‑circuit.
Unit will continue
operating. Fan speed is
NO more adjusted
according to CO
2
level.
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 optional CO
2
sensor. See CO2 sensor.
Possible cause:
Faulty CO
2
sensor.
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
