Daikin EBLA14DA3V3 - A1-00 - Zero Cross Detection Problem; A5-00 - Outdoor Unit: High Pressure Peak Cut; Freeze Protection Problem

2 | Troubleshooting
Service manual
20
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Possible cause: Faulty water temperature setting.
3 Perform a check of the 3-way valve. See "3.13-way valve"[486].
Possible cause: Faulty 3‑way valve.
4 Perform a check of the operation of the Aquastat. See "4.4 Manufacturer
components"[4307].
Possible cause: Faulty Aquastat.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.14 A1-00 – Zero cross detection problem
Trigger Effect Reset
Power supply
abnormality. The sinus of
the power supply crosses
the 0‑axis too often in
±10seconds.
Unit will stop operating. Manual reset via user
interface.
Power reset.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1 Perform a check of the main PCB. See "3.14Main PCB"[4171].
Possible cause: Faulty main PCB.
2 Perform a check of the noise filter PCB. See "3.15Noise filter PCB"[4194].
Possible cause: Faulty noise filter PCB.
3 Check if the power supply is conform with the regulations. See "4.1Electrical
circuit"[4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.
2.3.15 A5-00 – Outdoor unit: High pressure peak cut / freeze protection problem
Trigger Effect Reset
Pressure is too high in
heating / domestic hot
water, too low in cooling.
Unit will stop operating. Manual reset via user
interface.