[
IX
Troubleshooting ]
- 320 -
HWE09080
GB
1) For the connectors on the board, TH11 and TH12 are connected to CN10, and TH15 and TH16 are connected to CN11. Dis-
connect the connector in trouble, and check the sensor of each number.
2)
Pull out the sensor connector from the I/O board, Do not pull the sensor by holding the lead wire.
Measure the resistance with such as a tester.
Compare the measured value with that of shown in the figure below. When the result is
10%, it is normal.
3) Check the self-diagnosis switch (Heat source control board SW1).
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
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
TH12
TH15
TH12
TH15
Liquid inlet temperature
Bypass outlet temperature
Bypass outlet temperature
Bypass outlet temperature
TH11
TH12
Bypass inlet temperature
Bypass inlet temperature
Bypass inlet temperature
Bypass inlet temperature
TH15
TH16
Measurement data
SW1 setting value
Symbol
G, GA
(Standard / main)
GB, HB
(Sub 1)
GB, HB
(Sub 2)
Содержание PQHY-P120THMU-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 113: ... 104 IV Remote Controller GB HWE09080 ...
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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 181: ... 172 VII Control GB HWE09080 ...
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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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