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Troubleshooting
Service manual
40
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
3.6 Symptom based troubleshooting
3.6.1 Operation does not start
Check
Detail
When the operation lamp is off, there is
a power failure.
Check the power supply.
▪
Is the power supply breaker ON?
▪
Do other electrical appliances work?
▪
Is the rated voltage (± 10%) supplied?
▪
Check the insulation of the electric
system.
Check the type of the indoor unit.
Is the indoor unit type compatible with
the outdoor unit?
Check the transmission between indoor
and outdoor.
▪
Connection wires.
Check the outdoor temperature.
▪
Heating operation cannot be used
when the outdoor temperature is
18°C WB or higher.
▪
Cooling operation cannot be used
when the outdoor temperature is
below −10°C DB.
When the operation lamp blinks, there
may be an error code, activating the
protection device.
Diagnose with remote controller
indication.
See
Check the remote controller addresses. Are the address settings for the remote
controller and indoor unit correct?
Check the operation circuit.
▪
Is the thermal fuse blown.
▪
Are wire size and wire connections
OK?.
Check fan motor.
▪
Is the magnetic switch defective?
▪
Is the overcurrent relay defective?
Check compressor.
▪
Is the contact defective?
▪
Is
the
protection
thermostat
defective?
▪
Is the compressor itself defective?
Check remote controller.
▪
Are the batteries LOW?
▪
Are there incorrect settings?
3.6.2 Operation sometimes stops
Check
Detail
When the operation lamp is off, there is
a power failure.
Check the power supply.
▪
A power failure of 2 to 10 cycles stops
air conditioner operation.
draft – 22/04/2022 08:50
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