Sinclair SCV-1400EB, Service Manual

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95
L1: Low-voltage protection
L1
The power supply is abnormal
Yes
Check the power supply equipment
No
DC bus voltage(P, N) is abnormal
1
No
Change compressor module board
Yes
Power supply for compressor module
board is abnormal
Yes
Check the wire connection between power
supply terminals and filter board; Check the
wire connection between filter board to
compressor module board
No
Wire connection between reactor and
compressor module board is abnormal
Yes
Rewiring according to the wiring diagram
No
Pressure switch is open
Yes
Check whether P0 error appears or high
pressure switch broken
No
Change compressor module board
Note:
1. The normal DC voltage between terminals P and N of CN38 of compressor inverter module board should be 450-650V. When the voltage is lower than 350V.