Ice Machine Cycles Into Harvest Before Water Contact With The Ice Thickness Probe - Manitowoc Marine Q 1800 Service Manual

Electrical System

Ice Machine Cycles Into Harvest Before Water Contact With The Ice Thickness Probe

Step 1 Disconnect the ice thickness probe from the control board at terminal 1C.
Step 2 Bypass the freeze time lock-in feature by moving the ICE/OFF/CLEAN switch to OFF and back to
ICE. Wait until the water starts to flow over the evaporator, then monitor the harvest light.
ICE THICKNESS PROBE
EVAPORATOR
Monitoring of Harvest Light
The harvest light stays off and the ice machine
remains in the freeze sequence.
The harvest light comes on, and 6-10 seconds later,
the ice machine cycles from freeze to harvest.
22
SV1591G
Step 2 Disconnect probe from control board terminal 1C
CLEAN LIGHT
WATER LEVEL LIGHT
BIN SWITCH LIGHT
HARVEST/SAFETY LIMIT LIGHT
1C
Step 2
The ice thickness probe is causing the malfunction.
Verify that the Ice Thickness probe is adjusted
correctly.
The control board is causing the malfunction.
SV1588G
Correction