McQuay MDS 150B User Manual

Service Manual SM-MDS_(ii) 75
Indoor pump error
Error Code: Decorative Error code #3, FB (For MC301)
Replace indoor pump
Turn on the unit
Check the indoor pump.
Is it functioning normally?
YES
Check the drain hose and pump
for blockage. Clean it and restart
the system
NO
NO
YES
Replace the water level switch
Check the water level switch.
Is it functioning normally?
6
Is the indoor unit installed
properly?
Align the indoor unit properly
and restart the system
NO
YES

McQuay MDS 150B Specifications

General

Brand	McQuay
Model	MDS 150B
Category	Compressor
Language	English