C4-00 - Heat Exchanger Temperature Sensor Problem; C5-00 - Heat Exchanger Thermistor Abnormality - Daikin EBLA04E V Series Service Manual

3.3.30 C4-00 – Heat exchanger temperature sensor problem
3.3.31 C5-00 – Heat exchanger thermistor abnormality
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
Trigger
Refrigerant liquid
thermistor detects an
open or short circuit
during compressor
operation.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check
4
"4.19 Thermistors" [
Possible cause: Faulty refrigerant liquid thermistor.
2 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Refrigerant heat
exchanger temperature is
out of range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the inlet water thermistor. See "4.19 Thermistors" [
Possible cause: Faulty inlet water thermistor.
2 Perform a check of the outlet water after heat exchanger thermistor. See
4
"4.19 Thermistors" [
Possible cause: Faulty outlet water after heat exchanger thermistor.
3 Perform a check
"4.19 Thermistors" [ 4
Possible cause: Faulty refrigerant liquid thermistor.
4 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
Effect
Unit will stop operating.
of the refrigerant
217].
"4.12 Hydro
Effect
Unit will stop operating.
217].
of the refrigerant
217].
"4.12 Hydro
draft – 31/05/2022 15:53
3 | Troubleshooting
Reset
Power reset.
liquid thermistor. See
4
PCB" [ 175].
Reset
Automatic reset.
4
217].
liquid thermistor. See
4
PCB" [ 175].
Service manual
39