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[
IX
Troubleshooting ]
Note1 BC controller: Phenomena when the pressure sensor is connected wrongly (reverse connection of P1 and P3) to the
board.
Note2 Check the self-diagnosis switch (Outdoor control board SW1).
Note3 Check whether CNP1 (liquid side) connector on the BC controller control board and the connector CNP2 (intermedi-
ate part) are not disconnected or not loose.
Note4 Check the pressure value on the self-diagnosis switch (same as note1) with the connector of the applied pressure
sensor is disconnected from the board.
Cooling-only
Heating only
Heating main
Non-cooling
Indoor heating SC small
Heating indoor Thermo ON
Especially noise is large.
Indoor heating SC small
Heating indoor Thermo ON
Especially noise is large.
Cooling-main
Symptoms
SC11 large
SC16 small
PHM large
SC11 large
SC16 small
PHM large
Non-cooling
Normal
SC11 large
SC16 small
PHM large
Measurement data
SW1 setting value
Outdoor high pressure
Outdoor low pressure
BC controller pressure
(liquid side)
BC controller pressure
(intermediate part)
Symbol
63HS
P1
63LS
P3
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
1 2 3 4 5 6 7 8 9 10
ON
Содержание PUHY-P168
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Страница 99: ... 90 III Outdoor Unit BC Controller Components 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...
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Страница 126: ... 117 VI Refrigerant Circuit 1 Refrigerant Circuit Figure 119 2 Principal Parts and Functions 126 ...
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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 366: ... 357 IX Troubleshooting ...
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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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