Manitowoc QF0400 Technician's Handbook page 162

Water Level Probe Closed or Shorted
(Ice machine will continue to run.)
If the ice machine runs out of water with the water level
probe shorted, the ice machine will initiate an Automatic
Shut-Off cycle and flash the Temperature light. (Refer
to "High or Low Temperature SafeGuard" for additional
information.)
CHECK PROCEDURE
Water Level Probe Open or Disconnected
1. Determine which water level probe is connected
to "water level" on the control board.
2. Remove water level probe from reservoir and
place jumper wire from the water level probe to
ground.
3. Move the toggle switch to the ICE position, wait
45 seconds, and then monitor the Water Level
Probe light.
Step 3 Jumper water level probe to ground
Water Level
light is:
On
Off
WATER LEVEL
PROBE LIGHT
162
Compressor
Energizes
Remains
de-energized
Part Number 80-1230-9 10/10
Cause
Control system is
operating normally
Verify water level
is correct.
Proceed to step 4.
JUMPER FROM
WATER LEVEL
PROBE TO
GROUND