Water Level Control Circuitry - Manitowoc Indigo Series Technician's Handbook

WATER LEVEL CONTROL CIRCUITRY

FUNCTION
The water level probe controls the water level by sensing
whether water is or is not contacting the water level
probe. The water level probe has three sensing probes.
Two probes are equal in length and are used to measures
conductivity for diagnostics, ice clarity and water miser
options. Factory default settings measure resistance from
both long probes to the short probe.
SPECIFICATIONS
Freeze Cycle Water Level Setting
During the Freeze cycle, the water level probe is set to
maintain the proper water level above the water pump
housing. The water level is not adjustable. If the water
level is incorrect, check the water level probe position.
Reposition or clean the probe as necessary.
Water Inlet Valve Safety Shut-Off
In the event of a water level probe failure, this feature
limits the water inlet valve to 12.5 minutes. Regardless
of the water level probe input, the control board
automatically shuts off the water inlet valve if it remains
on for 12.5 continuous minutes (30 seconds in prechill
and two 6 minute periods in the freeze cycle).
Part Number STH026 6/15 165