Tank Temperature Sensor Problem; Water Pressure Sensor Abnormality - Daikin altherma 3 M Service Manual

2 | Troubleshooting
2.3.48 HC-00 – Tank temperature sensor problem
2.3.49 HJ-10 – Water pressure sensor abnormality
Service manual
46
Trigger
Domestic hot water tank
thermistor input 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 domestic hot water tank thermistor. See
"3.20 Thermistors" [
Possible cause: Faulty domestic hot water tank 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
Water pressure input is
out of range.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check the main water supply and pressure of the installation. See
4
circuit" [ 299].
Possible cause: Main water supply or pressure outside expected range.
2 Check for leaks in the water circuit. See
Possible cause: Leak in the water circuit.
3 Perform a check of the water pressure sensor. See
4
sensor" [ 272].
Possible cause: Faulty water pressure sensor.
4 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.
Effect
Unit will NOT stop
operating.
4
248].
"3.12 Hydro
Effect
Unit will NOT stop
operating.
"4.3 Water
"3.12 Hydro
Reset
Automatic reset when
resistance is within range.
4
PCB" [ 160].
Reset
Automatic reset when
water pressure is within
range.
"4.3 Water
4
circuit" [ 299].
"3.23 Water pressure
4
PCB" [ 160].
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03