Daikin Emura 3 Series, Service Manual

Page: 27 / 100

3 | Troubleshooting
Service manual
27
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
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" [
4
62].
Possible cause: Closed stop valve in the refrigerant circuit.
2 Check if the refrigerant circuit is correctly charged. See "5.2 Refrigerant
circuit" [
4
62].
Possible cause: Refrigerant overcharge.
3 Check for the presence of non‑condensables and/or humidity in the
refrigerant circuit. See
"5.2 Refrigerant circuit" [ 4 62].
Possible cause: Non‑condensables and/or humidity in the refrigerant circuit.
4 Check if the refrigerant circuit is clogged. See "5.2 Refrigerant circuit" [ 4 62].
Possible cause: Clogged refrigerant circuit.
5 Perform a check of the discharge pipe thermistor. See Thermistors.
Possible cause: Faulty discharge pipe thermistor or connector fault.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
3.5.19 H0-00 – Outdoor unit: Voltage/current sensor problem
Trigger Effect Reset
Compressor voltage (DC)
is out of range before
start‑up. 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 main PCB. See Main PCB.
Possible cause: Faulty main PCB.
2 Check if the power supply is compliant with the regulations. See "5.1 Electrical
circuit" [
4
60].
Possible cause:
▪
Faulty or disturbance of the power supply (power supply MUST be within
range of nominal operating voltage ±4%),
▪
Power drop,
▪ Short circuit.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
3 Wait until the rectifier voltage is below 10 V DC.
draft – 22/04/2022 08:50