McQuay M5ACV 030 CR

Variable compressor overload (Comp 1 overload)
Compressor current & circuit is ok
Main board/compressor faulty
No
To check & replace
Restart, Set freq.
with handset.
Check current, is
it ok?
Yes
No
Phase missing
Incorrect incoming supply
Is voltage
between R,S,T
415VAC
±20%
To check & rectify
No
Is J-RST on Main
board
415VAC±20%?
Main board faulty
Disconnect power,
remove J-RST, is
voltage of socket
415VAC±20%?
Main board faulty
To replace Main board
To replace Main board
Yes
EMI filter faulty
Yes
Yes
No
To check & replace EMI filter
87