Scotsman SCE275 Bedienungsanleitung PDF herunterladen (Seite 28)

Service Diagnosis

SCE275

January 2003

Page 28

Problem or Symptom Possible Cause Probable Correction

Fan motor(s) do not

turn.

Open motor windings, or

seized bearings, or blade

stuck against shroud

Replace fan motor or free fan blade.

No power to fan motors

Fan motor unplugged, check for voltage at

controller. Controller cycles fan motors during

freeze. If no voltage to the fan motors at

controller during freeze, replace controller.

Pump motor does not

turn

Open motor windings, or

seized bearings

Replace pump

No power to pump

Check electrical connections. Check water level.

Switch the unit to Clean, the pump should then

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

Open starting components Check and replace

Open windings Check and replace compressor

Internal valve failure Replace compressor

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