H0-00 - Outdoor Unit: Voltage/Current Sensor Problem - Daikin altherma 3 M Service Manual

2 | Troubleshooting
2.3.40 H0-00 – Outdoor unit: Voltage/current sensor problem
Service manual
40
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Clean the outdoor heat exchanger. See "5 Maintenance" [
Possible cause: Dirty outdoor heat exchanger.
2 Check that all stop valves of the refrigerant circuit are open. See
"4.2 Refrigerant circuit" [
Possible cause: Closed stop valve in the refrigerant circuit.
3 Check the outdoor temperature. See
Possible cause: Outdoor temperature is out of operation range.
4 Check the required space around the outdoor unit heat exchanger. See
"4.5 External factors" [
Possible cause: Insufficient air flow or air by‑pass due to required space
specifications not met.
5 Perform a check
"3.20 Thermistors" [
Possible cause: Faulty heat exchanger thermistor.
6 Perform a check of all expansion valves. See
Possible cause: Faulty expansion valve.
7 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
8 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 286].
Possible cause: Refrigerant overcharge.
9 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
10 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
11 Perform a check of the outdoor unit fan motor. See
4
motor" [ 217].
Possible cause: Faulty outdoor unit fan motor.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Compressor voltage (DC)
is out of range before
start‑up.
4
286].
"4.5 External
4
307].
of the heat
4
248].
"3.14 Main
"4.2 Refrigerant circuit" [
Effect
Unit will stop operating.
4
309].
4
factors" [ 307].
exchanger thermistor.
4
"3.9 Expansion valve" [
4
PCB" [ 171].
"4.2 Refrigerant
4
286].
"4.2 Refrigerant circuit" [
"3.16 Outdoor unit fan
Reset
Manual reset via user
interface.
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
See
149].
4
286].