2 | Troubleshooting
Service manual
35
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 "4.1Electrical
circuit"[4284].
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.
2.3.33 E9-00 – Malfunction of electronic expansion valve
Trigger Effect Reset
No continuity of the
expansion valve.
Unit will stop operating. Manual reset via user
interface.
Minimum expansion valve
opening and suction
superheat <4 K and
discharge superheat <5 K.
Power reset via outdoor
unit.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of all refrigerant side thermistors. See
"3.20Thermistors"[4248].
Possible cause: Faulty refrigerant side thermistor(s).
2 Perform a check of all expansion valves. See "3.9Expansion valve"[4149].
Possible cause: Faulty expansion valve.
3 Check that all stop valves of the refrigerant circuit are open. See
"4.2Refrigerant circuit"[4286].
Possible cause: Closed stop valve in the refrigerant circuit.
4 Check if the refrigerant circuit is clogged. See "4.2Refrigerant circuit"[4286].
Possible cause: Clogged refrigerant circuit.
5 Check if the refrigerant circuit is correctly charged. See "4.2 Refrigerant
circuit"[4286].
Possible cause: Refrigerant overcharge.
6 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See "4.2Refrigerant circuit"[4286].
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
7 Perform a check of the main PCB. See "3.14Main PCB"[4171].
Possible cause: Faulty main PCB.
8 Check if the power supply is conform with the regulations. See "4.1Electrical
circuit"[4284].
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