Heat Exchanger Frozen - Daikin EBLA04E V Series Service Manual

3 | Troubleshooting
3.3.12 89-02 – Heat exchanger frozen
Service manual
26
draft – 31/05/2022 15:53
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
"4.19 Thermistors" [
Possible cause: Faulty refrigerant liquid thermistor.
4 Perform a check of the hydro PCB. See
Possible cause: Faulty hydro PCB.
5 Check that all stop valves of the refrigerant circuit are open. See
"5.2 Refrigerant circuit" [
Possible cause: Closed stop valve in the refrigerant circuit.
6 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 256].
Possible cause: Refrigerant overcharge.
7 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
8 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.
9 Check the water flow. See
Possible cause: Water flow is too low.
10 Check the water pressure. See
Possible cause: Water pressure is too low.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
Condensing temperature
<0°C during space
heating.
Liquid refrigerant
thermistor ≤0°C during
space heating or domestic
hot water.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
217].
of the refrigerant
217].
"4.12 Hydro
4
256].
"5.2 Refrigerant
"5.2 Refrigerant circuit" [
4
"5.3 Water circuit" [
"5.3 Water circuit" [
Effect
Unit will stop operating.
4
liquid thermistor.
PCB" [ 4 175].
"5.2 Refrigerant
4
circuit" [
4
256].
265].
4
265].
Reset
Automatic reset.
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
217].
See
256].