Manitowoc Marine Q 1000, Service Technician'S Handbook

Page: 66 / 179

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Water Level Control Circuitry
The water level probe circuit can be monitored by
watching the water level light. The water level light is
on when water contacts the probe, and off when no
water is in contact with the probe. The water level light
functions any time power is applied to the ice machine,
regardless of toggle switch position.
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 for
damage (probe bent, etc.). Repair or replace 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 a six-minute on time.
Regardless of the water level probe input, the control
board automatically shuts off the water inlet valve if it
remains on for 6 continuous minutes. This is important
to remember when performing diagnostic procedures
on the water level control circuitry.
WATER
LEVEL
ABOVE
HOUSING
SV1616
WATER
PUMP
IMPELLER
HOUSING
WATER
LEVEL
SENSOR
PROBE
WATER
PUMP