What happened if a compressor fails to start or shut down on its compressor protection module or other circuit safety device?

(MP1, MP1A, MP1B, MP2, MP2A, MP2B, RMV1, RMV2)

If any of the compressor protection (wired in series) devices trip the safety circuits M9.1 to M9.2 or M12.1 to M12.2 is opened shutting down the NRL circuit completely. A solution is to disconnect the defective compressor or control electrically. Install a jumper on the overload or relay control contacts. All other unit functions should be operational.