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[
IX
Troubleshooting ]
Error Code
Error definition and error
detection method
Cause
Check method and remedy
4220
4225
Logic error
(Detail code
No.111)
If only the H/W error logic
circuit operates, and no
identifiable error is de-
tected.
In the case of 4220
(1) External noise
(2) Compressor INV board
failure
(3) G/A board failure
(4) IPM failure
(5) DCCT failure
Refer to 9 [4]-8-(2) [1] and replace
the G/A board.
Refer to 9 [4]-8-(2) [5] and replace
DCCT.
In the case of 4225
(1) External noise
(2) FAN INV board failure
Refer to 9 [4]-8-(2) [7].
4230
4235
Heatsink over-
heat protection
In the case of 4230
When the heat sink
temperature
(THHS1) 95°C
[203°F] or higher is
detected.
In the case of 4235
When the heat sink
temperature
(THHS1) 85°C
[185°F] or higher is
detected.
(1) Power supply environment Measure the power supply voltage.
Ensure that the power supply volt-
age is 187V or more between each
phase.
(2) Air passage blockage
Check that the heat sink cooling air
passage is not blocked.
(3) Faulty wiring
Check for cooling fan wiring.
(4) THHS failure
Check for THHS sensor resistor.
(5) Compressor INV board
failure and cooling fan fail-
ure
Check that a voltage of 208/230V is
applied to the compressor INV board
connector CNFAN while the inverter
is in operation.
(6) Cooling failure
Check the cooling fan operation un-
der the above operating conditions.
(7) IPM failure
Refer to 9 [4]-8-(2) [2]
"Check for compressor ground fault
or coil error".
Refer to 9 [4]-8-(2) [5]
"Check the inverter circuit trouble".
Содержание PUHY-P168
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Страница 134: ... 125 VI Refrigerant Circuit 3 CMB P104 and P108NU GB sub TH25 TH22 LEV3a CP Solenoid valves Block Check valves Block ...
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Страница 368: ... 359 X LED monitor display on the outdoor unit board 1 How to read the LED on the service monitor 361 ...
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