E3-00 - Outdoor Unit: Actuation Of High Pressure Switch - Daikin EBLA04E V Series Service Manual

3 | Troubleshooting
3.3.35 E3-00 – Outdoor unit: Actuation of high pressure switch
Service manual
42
draft – 31/05/2022 15:53
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
Trigger
High pressure switch
opens due to measured
pressure above high
pressure switch operating
point.
High pressure control
(measured pressure just
below high pressure
switch operating point)
occurs 16 times within
300 minutes.
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" [
Possible cause: Closed stop valve in the refrigerant circuit.
2 Perform a check of the refrigerant pressure sensor. See
4
pressure sensor" [ 212].
Possible cause: Faulty refrigerant pressure sensor.
3 Perform a check of the high pressure switch. See
4
switch" [ 171].
Possible cause: Faulty high pressure switch.
4 Perform a check of the main PCB. See
Possible cause: Faulty main PCB.
5 Check if the refrigerant circuit is correctly charged. See
4
circuit" [ 256].
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 Check if the refrigerant circuit is clogged. See
Possible cause: Clogged refrigerant circuit.
8 Perform a check of the outdoor unit fan motor. See
4
motor" [ 197].
Possible cause: Faulty outdoor unit fan motor.
Effect
Unit will stop operating.
4
256].
"4.14 Main
4
"5.2 Refrigerant circuit" [
"5.2 Refrigerant
Reset
Manual reset via user
interface.
"4.18 Refrigerant
"4.11 High pressure
PCB" [ 4 184].
"5.2 Refrigerant
256].
4
circuit" [ 256].
"4.15 Outdoor unit fan
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05