Diagnostics - Water 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
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
Water supply cut off, restore
water supply to condenser
Water pump not pumping
Check pump motor, check
controller using test mode
Pump hose disconnected
Check hose
Compressor not operating
Check compressor contactor,
check controller using test
mode
Check compressor start
components, check PTCR
resistance and temperature
Check compressor voltage
Check compressor windings
September 2006 Page 47