Manitowoc Ice Machine ICVD0895

Press the power button to start an ice making cycle and remove water curtain or splash guard if present.

Remove the ice thickness probe, rotate and remount with the nipple facing away from the evaporator.

Navigate to 'Ice Sense' in the menu

Scroll down to 'Service' and press the right arrow.

Scroll down to 'RealTimeData' and press the right arrow.

Scroll down to 'Inputs' and press the right arrow.

Wait until 6.5 minutes into the freeze cycle (sequence 4. Freeze). Refer to Sequence of Operation starting on page 103 for details.

Disconnect wires from relay terminals

Verify the contacts are closed by measuring resistance between terminals 1 and 2

Replace the relay if contacts are open

Check the relay coil by measuring resistance between terminals 2 and 5

Is there resistance in the relay coil?

Replace the relay if the coil is open

Mix Manitowoc ice machine cleaner and water

Soak probes in cleaner/water solution

Reinstallation and Sanitization

Sanitize the ice machine and bin/dispenser interior surfaces

Cycle ice machine with the on/off button

Run the system to see if the control trips at the rated pressure

Is the HPCO opening at a pressure significantly lower or higher than 450 psig?

If the control opens at the correct pressure, find the root cause (Fan motor, dirty condenser, refrigeration system issue, etc.)

Leave all wiring connectors attached and perform testing within the 60 minute time delay period

Check for 24 volts at terminals V & C on the ice machine control board

Disconnect thermistor from control board

Measure resistance of the thermistor

Measure temperature at the thermistor

Compare measured resistance/temperature readings to resistance/temperature relationship chart

Is the resistance within 10% of the published value?