Manitowoc Ice CM MODEL STH003 - Manual (Page 56)

56
Check Procedure
WARNING
High (line) voltage is applied to the control board
(terminals #20 and #21) at all times. Removing
the control board fuse or depressing the power
button will not remove the power supplied to the
control board.
WARNING
Disconnect electrical power to the entire ice
machine before proceeding.
1. Verify the capillary tube is inserted correctly in the
bulb holder (17” 43 cm).
2. Remove the 2 bottom front panels to access the
bin thermostat.
3. Disconnect wires #45 and #46 from the bin
thermostat or control board and check the
resistance across the bin thermostat terminals.
No Ice on
Bulb
Ice on Bulb Result
Closed (O) Open (OL)
Thermostat
good
Open (OL) Closed (O)
Replace
thermostat
Note: After covering/uncovering the bulb holder with
ice, wait at least three minutes to allow the
thermostat to react. (Open/Close)