Scotsman CME506 Manual descarregar pdf (Página 23)

Service Diagnosis: Controller Diagnostic Light Analysis

CME256, 506, 656, 806: AutoIQ™ Cubers

January 2002

Page 23

Problem or Symptom Possible Cause Probable Correction

Machine is off Bin is full, ice in cube port Use some ice

Power is off, check

controller lights.

If all lights are out, check power supply,

restore power if off

Transformer is open If all lights are out and there is power, check

transformer output for 24 vac

Unit has been switched off

Off lite is glowing

Push and release Freeze button to restart

unit.

Compressor will not start Not enough water or water not sensed.

Unit has Shut Down Check for Refrigeration or Water Error

Unit is off & Water

diagnostic light is ON

or BLINKING

Water inlet valve

malfunction

Check water diagnostic light, if it blinks 2

times and repeats, check the water inlet valve

for proper water flow.**

Water pump malfunction Check that pump hose is attached and if

pump is plugged in and working.

Water level not sensed or

not high enough

Check harness from sensor. Check

levelness, check standpipe height.

Unit is off &

Refrigeration

diagnostic light is ON

or BLINKING

Low discharge or long

freeze cycle

If the Refrigeration light is glowing steadily,

there is a probable refrigeration problem

Harvest problem If the Refrigeration light blinks once and

repeats, look for a harvest problem.** On

controllers 17-1 and higher, this also indicates

that cubes were “sensed” by the bin controls.

Hot Gas Valve failure Check hot gas valve operation.

High Discharge Temp If the refrigeration diagnostic light blinks 3

times and then repeats, check for a reason for

high discharge temperatures.

Harvest problem Controllers 17-1 and higher, if the lite blinks 2

times and repeats, check for a harvest error -

no cubes sensed.

Unit does not go into

harvest - exceeds

maximum freeze time

Push and release Off button. Push and

release Freeze button. Check operation.

Push cube size float down and check

operation.

Exceeds maxi harvest time Check for cause of long harvest cycle**

Unit runs and both

Diagnostic lites are

Temperature sensors out

of range

Replace the temperature sensor set (water

and discharge).

Same, but 1 light is on Reservoir temp. wrong Reset and check water temp and sensor.

* Machine may be reset by pushing and releasing the Off button, then pushing and releasing the

Freeze button. ** See following pages

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 35 36

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