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14.4 Outdoor PCB Test Run Operation (For Pump Down/Servicing Purpose)
The Test Run operation will be activated by short-circuiting CN-S (Pin 1 and 2) at outdoor unit PCB after power
supplied to outdoor unit terminal 1 and 2. The unit forced to run rated frequency cooling operation mode.
CU-E12RB4U
CN-DCFM
FG1
CN-STM
CN-S
CN4
CN5
CN-TANK
CN-TH
CN-HOT
CURRENT
TRANSFORMER
(CT)
DATA
AC-WHT
AC-BLK
POWER
TRANSISTOR
(IPM)