Manitowoc Ice Machine IY0684C

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

Cycle ice machine with the on/off button

Ice Machine starts - Run the system to see if the control trips at the rated pressure

If HPCO opens at a pressure significantly lower or higher than the control setting of 450 psig, replace the HPCO

If the control opens at the correct pressure, find the root cause

Ice Machine Does Not Start - Continue with the next step

Perform testing within the 60 minute time delay period

Voltage Check at Terminals V & C

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

24 volts - Proceed with next step

Start an ice making cycle by pressing the power button

Remove water curtain or splash guard if present

Rotate and remount the probe 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

Preparation and Safety Precautions

Ensure all ice produced during cleaning and sanitizing is discarded.

Wear rubber gloves and safety goggles (and/or face shield) when handling Ice Machine Cleaner or Sanitizer.

Ensure the following before starting the cleaning cycle

Remove all ice from the bin/dispenser.

Press the clean switch and wait for the water trough to refill.

Add the proper amount of ice machine cleaner when prompted.

Wait until the clean cycle is complete (approximately 24 minutes).

Press the power button and stop ice making

Check the water trough during freeze mode to determine if the dump valve is leaking

If the dump valve is leaking, remove, disassemble and clean it

If the dump valve is not leaking, follow the 'Ice Machine Cleaning Procedure'