Scotsman CME506R AutoIQ - Manual (Page 29)

Service Diagnosis: Components
CME506R, 656R, 806R: AutoIQ Cubers
January 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 KCMR230 relay points may be open. Wires
may be disconnected, 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,
Clean or Harvest 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 (early
part of harvest)
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
Liquid line valve coil open Check and replace
No power to liquid line
valve coil
Check wiring and controller
Pump down control open Check and replace
Open starting components Check and replace
Open windings
Check and replace compressor
Internal valve failure Replace compressor