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Troubleshooting
Service manual
24
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
Possible cause:
▪
Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪
Power drop,
▪
Short circuit.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.15 EA-00 – Outdoor unit: Cool/heat switchover problem
Trigger
Effect
Reset
Room thermistor is NOT
functioning within
operation range.
Unit will NOT stop
operating.
Automatic reset after a
continuous operation for
some time.
If the error occurs too
soon: unit will stop
operating.
Manual reset via user
interface.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Perform a check of the 4‑way valve. See 4-way valve.
Possible cause:
Faulty 4‑way valve.
2
Perform a check of the main PCB. See Main PCB.
Possible cause:
Faulty main PCB.
3
Perform a check of the indoor unit air (room) thermistor. See Thermistors.
Possible cause:
Faulty indoor unit air (room) thermistor.
4
Perform a check of the indoor unit main PCB. See Indoor unit PCB.
Possible cause:
Faulty indoor unit main PCB.
5
Check that all stop valves of the refrigerant circuit are open. See
Possible cause:
Closed stop valve in the refrigerant circuit.
6
Check if the refrigerant circuit is clogged. See
Possible cause:
Clogged refrigerant circuit.
7
Check if the refrigerant circuit is correctly charged. See
Possible cause:
Refrigerant overcharge or shortage.
8
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.
draft – 22/04/2022 08:50