Daikin EBLA04E V Series, Service Manual, Page: 65 / 324

3 | Troubleshooting
Service manual
65
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
3.3.67 L8-00 – Malfunction triggered by a thermal protection in the main PCB
Trigger Effect Reset
When compressor
overload (except during
start-up) is detected. Unit will stop operating. Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Check that all stop valves of the refrigerant circuit are open. See
"5.2 Refrigerant circuit" [
4
256].
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [ 4 256].
Possible cause: Clogged refrigerant circuit.
3 Check if the refrigerant circuit is correctly charged. See "5.2 Refrigerant
circuit" [
4
256].
Possible cause: Refrigerant overcharge or shortage.
4 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
"5.2 Refrigerant circuit" [
4
256].
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
5 Perform a check of the main PCB. See "4.14 Main PCB" [
4
184].
Possible cause: Faulty main PCB.
6 Perform a check of the compressor. See "4.7 Compressor" [
4
148].
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.3.68 L9-00 – Prevention of compressor lock
Trigger Effect Reset
Detection of start‑up
failure after time passed
to avoid compressor lock. Unit will stop operating. Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the compressor. See "4.7 Compressor" [
4
148].
Possible cause: Faulty compressor or miswiring of the compressor power
supply cable.
draft – 31/05/2022 15:53