Daikin EHYHBH05AAV3 Service Manual page 100

Error Codes: Hydro-box
“C0” Hydro-box: Flow Sensor Failure
3.5
1
Remote controller
display
Method of
malfunction
detection
Malfunction
decision conditions
3
Supposed causes
Troubleshooting
4
5
Part 4 – Troubleshooting
C0
The protection device circuit checks the flow input signal during pump stop operation.
The error is generated in case flow input signal during pump stop operation occurs.
Malfunction of the flow sensor
Water flow caused by external source
[1]: Do not disconnect the connector of the flow sensor on the PCB (X4A). Measure the voltage value
on the connector of the flow sensor between pin 2 and 3.
100
ESIE13-02A