E9-00 - Malfunction Of Electronic Expansion Valve - Daikin altherma 3 M Service Manual

2.3.33 E9-00 – Malfunction of electronic expansion valve
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Possible cause: Faulty main PCB.
4 Check if the power supply is conform with the regulations. See
4
circuit" [ 284].
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance >4%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
No continuity of the
expansion valve.
Minimum expansion valve
opening and suction
superheat <4 K and
discharge superheat <5 K.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check
"3.20 Thermistors" [
Possible cause: Faulty refrigerant side thermistor(s).
2 Perform a check of all expansion valves. See
Possible cause: Faulty expansion valve.
3 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.
4 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
5 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 286].
Possible cause: Refrigerant overcharge.
6 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.
7 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
8 Check if the power supply is conform with the regulations. See
4
circuit" [ 284].
Effect
Unit will stop operating.
of all refrigerant
4
248].
4 286].
"4.2 Refrigerant circuit" [
"3.14 Main
2 Troubleshooting
|
"4.1 Electrical
Reset
Manual reset via user
interface.
Power reset via outdoor
unit.
side thermistors.
4
"3.9 Expansion valve" [
"4.2 Refrigerant circuit" [
"4.2 Refrigerant
4 286].
4
PCB" [ 171].
"4.1 Electrical
See
149].
4
286].
Service manual
35