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Troubleshooting
Service manual
20
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
DANGER: RISK OF ELECTROCUTION
Wait for at least 10 minutes after the circuit breaker has been turned OFF, to be sure
the rectifier voltage is below 10 V DC before proceeding.
6
Check that the thermal interface grease is applied properly on the (PCB or
refrigerant piping) contact surface of the heat sink. Adjust if needed.
Possible cause:
Thermal interface grease NOT applied properly on the heat
sink.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.10 E3-00 – Outdoor unit: Actuation of high pressure switch
Trigger
Effect
Reset
High pressure switch
opens due to measured
pressure above high
pressure switch operating
point.
Unit will stop operating.
Manual reset via user
interface.
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
Possible cause:
Closed stop valve in the refrigerant circuit.
2
Perform a check of the high pressure switch. See High pressure switch.
Possible cause:
Faulty high pressure switch.
3
Perform a check of the main PCB. See Main PCB.
Possible cause:
Faulty main PCB.
4
Check if the refrigerant circuit is correctly charged. See
Possible cause:
Refrigerant overcharge.
5
Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
62].
Possible cause:
Non‑condensables and/or humidity in the refrigerant circuit.
6
Check if the refrigerant circuit is clogged. See
Possible cause:
Clogged refrigerant circuit.
draft – 22/04/2022 08:50