Manitowoc I0320 Technician's Handbook page 146

Step 6. Water level probe wires #2 & #3 jumpered
at the control board connector
Is Water
Flowing
into the
Water
Trough?
No
Yes
Yes
144
The
The Water
Water
Inlet Valve
Level
Solenoid
Light
Is:
On De-energized
Off Energized
On De-energized
Coil Is:
Part Number STH038 5/12
Cause
The
interconnecting
wire or water level
probe is causing
the problem.
Ohm, then clean or
replace the water
level probe or wire.
The control board
is causing the
problem.
The water fill valve
is causing the
problem.