
Diagnostics – Air Cooled
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
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 filters clogged Clean air filters
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
Check fan motor pressure
control, check fan motor, check
controller using test mode
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
September 2006 Page 42
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