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Warning – Manitowoc Ice CM MODEL STH003 User Manual

Page 56

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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)