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6. Test Pin
2WAY SYSTEM
Trouble Diagnosis
6
7. Test Pin
2WAY SYSTEM
Trouble Diagnosis
When the test pin on the outdoor unit control PCB is short-circuited, each part can be operated individually.
•
After turning OFF the main unit power, short-circuit the test pin (CN22, black), then turn the power back ON.
Output is performed in the sequence shown in the table below, for 0.5 seconds each.
OperationOperationOutput
Relay RY12 4-way valve (20s) Relay RY1 Crankcase heater 1 (CH1)
Output
Relay RY9
6
7
8
9
Relay RY7
1
2
3
4
5
Relay RY8 Bypass valve (BPV)
Relay RY6 Oil recovery valve (ORVR)
Relay RY5
O
2
(OPTION)
PDV (OPTION)
Accumulator control valve (ACV)Relay RY4 Save valve (SAVE)
Relay RY2 Crankcase heater 2 (CH2)
SM830253-00_欧州2way7_SM-TRSM.indb 30 16/08/02 14:02:53