Service Diagnosis: Components - Scotsman CME506R Product Manual

Service Diagnosis: Components

Problem or Symptom Possible Cause
Fan motor does not
turn.
Pump motor does not
turn
Hot Gas Valve does
not open.
Hot Gas Valve leaks
thru (warm tube
temperatures on both
sides of valve during
freeze)
Water Inlet Valve does
not open
Water Inlet Valve does
not flow enough water
Water Inlet Valve
leaks thru
Compressor does not
work
CME506R, 656R, 806R: AutoIQ Cubers
Open motor windings, or
seized bearings
No power to fan motor
Open motor windings, or
seized bearings
No power to pump
Open solenoid coil.
Stuck valve
No power to coil in Harvest
Mechanical problem in
valve
Open solenoid coil
Stuck valve
No power to valve (early
part of harvest)
Restriction in water supply
Mechanical problem in
valve
Unit in Clean cycle
Contactor coil open
Liquid line valve coil open
No power to liquid line
valve coil
Pump down control open
Open starting components
Open windings
Internal valve failure
January 2000
Page 29
Probable Correction
Replace fan motor
KCMR230 relay points may be open. Wires
may be disconnected, contactor may not
close.
Replace pump
Check electrical connections. In Freeze,
Clean or Harvest the pump should have
power to it. If not, replace the AutoIQ
Controller.
Replace hot gas valve
Replace hot gas valve
Check wire connections, if ok, replace AutoIQ
Controller
Replace valve
Replace valve
Replace valve
Check wire connections, if ok, replace AutoIQ
Controller
Check water filters and/or inlet screen.
Replace valve
Push and release Freeze button.
Replace contactor
Check and replace
Check wiring and controller
Check and replace
Check and replace
Check and replace compressor
Replace compressor