[
IX
Troubleshooting ]
- 334 -
HWE09080
GB
Error display/failure condition
Measure/inspection item
[1]
Inverter related errors
4250, 4220, 4230, 4240,4260, 5301, 0403
Check the details of the inverter error in the error log in X LED Monitor
Display on the Heat source Unit Board.
Take appropriate measures to the error code and the error details in ac-
cordance with IX. [2] Responding to Error Display on the Remote Con-
troller.
[2]
Main power breaker trip
Refer to "(3) Trouble treatment when the main power breaker is
tripped".
[3]
Main power earth leakage breaker trip
Refer to "(4) Trouble treatment when the main power earth leakage
breaker is tripped".
[4]
Only the compressor does not operate.
Check the inverter frequency on the LED monitor and proceed to (2) -
[4] if the compressor is in operation.
[5]
The compressor vibrates violently at all times or makes an abnor-
mal sound.
See (2)-[4].
[6]
Noise is picked up by the peripheral device
<1> Check that power supply wiring of the peripheral device does not
run close to the power supply wiring of the heat source unit.
<2> Check if the inverter output wiring is not running parallel to the
power supply wiring and the transmission lines.
<3> Check that the shielded wire is used as the transmission line when
it is required, and check that the grounding work is performed prop-
erly on the shielded wire.
<4> Meg failure for electrical system other than the inverter
<5> Attach a ferrite core to the inverter output wiring. (Contact the fac-
tory for details of the service part settings.)
<6> Provide separate power supply to the air conditioner and other
electric appliances.
<7> If the error occurred suddenly, a ground fault of the inverter output
can be considered. See (2)-[4].
*Contact the factory for cases other than those listed above.
[7]
Sudden malfunction (as a result of external noise.)
<1> Check that the grounding work is performed properly.
<2>Check that the shielded wire is used as the transmission line when
it is required, and check that the grounding work is performed prop-
erly on the shielded wire.
<3>Check that neither the transmission line nor the external connec-
tion wiring does not run close to another power supply system or
does not run through the same conduit pipe.
* Contact the factory for cases other than those listed above.
[YHMU-A]
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Страница 102: ... III Heat source Unit Components 93 HWE09080 GB 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
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Страница 130: ... 121 HWE09080 GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 123 2 Principal Parts and Functions 126 ...
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Страница 366: ... 357 HWE09080 GB X LED Monitor Display on the Heat source Unit Board 1 How to Read the LED on the Service Monitor 359 ...
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