Freeze Cycle Is Long, Low Ice Production - Manitowoc QM20 Technician's Handbook

FREEZE CYCLE IS LONG, LOW ICE PRODUCTION

Water temperature is too high
• Connect to a cold water supply, verify check valves
in faucets and other equipment are functioning
correctly
Dirty Condenser
• Clean condenser
High air temperature entering condenser
• Air temperature must not exceed 120°F (39°C)
Water inlet valve filter screen is dirty
• Remove the water inlet valve and clean the filter
screen
Water inlet valve stuck open or leaking
• Turn off ice machine, if water continues to enter ice
machine, verify water pressure is ok then replace
water inlet valve
Water inlet valve is not working
• Water inlet valve must be replaced
Refrigeration problem
• Refer to refrigeration diagnostics
Water escaping from sump during freeze cycle
• Check standpipe and drain
• Check for water tracking out of water circuit
Part Number 80-01111-9 7/10 147