Panasonic LZ2 - Test Pin

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5. Test Pin
Mini VRF 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 (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 RY2 4-way valve (20s) Relay RY3 Crankcase heater (CH)
Output
Relay RY1
3
4
1
2 Relay RY5 Oil recovery valve (ORVR) O
2
(OPTION)
SM830289-00_Sec6.indd 26SM830289-00_Sec6.indd 26 2021/01/29 16:15:452021/01/29 16:15:45