Service Diagnosis: Components
CME456R
December 2000
Page 29
Problem or Symptom Possible Cause
Probable Correction
Fan motor does not
turn.
Open motor windings, or
seized bearings
Replace fan motor
No power to fan motor
Contactor may not close.
Pump motor does not
turn
Open motor windings, or
seized bearings
Replace pump
No power to pump
Check electrical connections. In Freeze, the
pump should have power to it. If not, replace
the AutoIQ Controller.
Hot Gas Valve does
not open.
Open solenoid coil.
Replace hot gas valve
Stuck valve
Replace hot gas valve
No power to coil in Harvest Check wire connections, if ok, replace AutoIQ
Controller
Hot Gas Valve leaks
thru (warm tube
temperatures on both
sides of valve during
freeze)
Mechanical problem in
valve
Replace valve
Water Inlet Valve does
not open
Open solenoid coil
Replace valve
Stuck valve
Replace valve
No power to valve (best
checked at the beginning
of Freeze)
Check wire connections, if ok, replace AutoIQ
Controller
Water Inlet Valve does
not flow enough water
Restriction in water supply
Check water filters and/or inlet screen.
Water Inlet Valve
leaks thru
Mechanical problem in
valve
Replace valve
Compressor does not
work
Unit in Clean cycle
Push and release Freeze button.
Contactor coil open
Replace contactor
Open starting components Check and replace
Open windings
Check and replace compressor
Internal valve failure
Replace compressor
