Bunn ITB/ITCB Manuel D’Utilisation

19

 

The  temperature probe is inserted through the 

tank lid assembly.

Test Procedures:
1.  Disconnect the brewer from the power source.
2.  With a DC voltmeter, check voltage across the two 

wires at J13 (J3 on ITB) on control board (black 
probe to black wire, red probe to white wire refer 
to FIG 19-2). Connect the brewer to the power 
source. The indication should be between 4vdc 
(cool) to 1vdc at ready temperature.

3.  Disconnect the brewer from the power source.

If voltage is present as described, circuit is working 
correctly.
If voltage is not present as described, proceed to 
#4.

4.  Disconnect temperature probe from J9 on control 

board. Check the resistance across the two ter-
minals of the temperature probe. The indication 
should be between 10.5K  cool to 870  at ready 
temperature.

If resistance is to specifi cation, replace the control 
board.
If resistance is not to specifi cation, replace the tem-
perature probe.

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