Service Diagnosis
No ice
Problem
Likely Cause
Probable Solution
No power to unit
Power disconnected
Check breaker or fuse. Reset or
replace, restart and check
No power to controller
Transformer open
Replace transformer
ON-OFF Switch open or set at OFF
Switch to ON or replaced switch
Shut down on maximum
water fill time
Water shut off
Restore water supply
Shut down on maximum
freeze time
Water leak
Check purge valve, curtain, sump,
pump hose
Air filter clogged
Clean air filter
Dirty condenser
Clean condenser
Restricted location, intake air too
hot
Have machine moved
Ice thickness sensor dirty or
disconnected
Check ice thickness sensor probe
Water distributor dirty
Remove and clean water
distributor
Inlet water valve leaks through
during freeze
Check inlet water valve
Connected to hot water
Check for bleed thru from / missing
check valve in building water
supply
Incomplete harvest
Check harvest system
High pressure cut out opened
Air cooled ,check fan motor
pressure control, check fan motor,
check controller using test mode
Water cooled, check for water
interruption
Fan motor pressure control open
Check fan pressure control
Fan motor not turning
Check fan motor, check fan blade,
check controller using test mode
Water pump not pumping
Check pump motor, check
controller using test mode
May 2008
Page 28
CU1526, CU2026, CU3030
Service Manual
