McQuay MDS 100B

Service Manual SM-MDS_(ii) 89
PCB Setting Error
Error Code: ERSE (For MDS-M PCB)
Check whether the outdoor PCB is
faulty. If yes, replace a new PCB
YES
Is the sensor and pressure
sensor correctly connected?
NO
Correct the dipswitch and
restart the unit
Turn off the unit
Check the outdoor
dipswitch setting,
is it correct?
6