S1800 Marine Model Ice Machines – Service Manual - Manitowoc Ice

Electrical System Section 6
Problem: Water Will Not Run Into The Sump Trough
During The Freeze Cycle
Step 1 Verify water is supplied to the ice machine, and
then start a new freeze sequence by moving the ICE/
OFF/CLEAN toggle switch to OFF then back to ICE.
Important
This restart must be done prior to performing
diagnostic procedures. This assures the ice machine
is not in a freeze cycle water inlet valve safety shutoff
mode. You must complete the entire diagnostic
procedure within 6 minutes of starting.
Is water flowing into
the water trough?
GREEN WATER LEVEL LIGHT
DISCONNECT WATER
LEVEL PROBE FROM
CONTROL BOARD
TERMINAL
Step 3
Step 2 Wait until the freeze cycle starts (approximately
45 seconds, the freeze cycle starts when the
compressor energizes).
Step 3 Disconnect the water level probe from the water
level probe terminal on the control board.
Important
For the test to work properly you must wait until the
freeze cycle starts, prior to disconnecting the water
level probe. If you restart the test you must
reconnect the water level probe, restart the ice
machine, (step 1) and then disconnect the water
level probe after the compressor starts.
Step 3 Disconnect water level probe from control board terminal
The Water Level
Light is:
The Water Inlet Valve
Solenoid Coil is:
Cause
YES OFF Energized
The water level probe is causing the problem.
Clean or replace the water level probe.
NO OFF Energized The water inlet valve is causing the problem.
NO ON OR OFF De-Energized The control board is causing the problem.
6-26 Part Number 80-1634-3
SV3135