Bunn JDF-4SB Manuel D’Utilisation

46

FIG. 65 TEMPERATURE PROBE

FIG. 66 TEMPERATURE PROBE

Location:

 

The temperature probe is located on the top of the 

tank assembly.

Test Procedure:

1.  Disconnect the dispenser from the power source.

2.  Remove the top rear cover.

3.  With a voltmeter, back probe the connector from 

the temperature probe.

4.  Connect the dispenser to the power source.

5.  See the chart for voltage readings.

6.  For continuity check, disconnect the dispenser 

from the power source.

7.  Disconnect the two pin connector from the dis-

penser main wiring harness.

8.  With an ohmmeter, check for continuity across 

the pins for the black and white wires.

9.  See the chart for resistance/voltage readings. Al-

ternate check: Leave two pin connector plugged 

in, place dc voltmeter across two pin connector in 

parallel, check voltage with dispenser running.

10. Verify wiring to probe.

11. If readings are not present as described, replace 

the temperature probe.

NOTE: Some meters have difficulty measuring a sen-

sor either rapidly rising or falling in temperature.

Removal and Replacement:

1.  Disconnect the dispenser from the power source.

2.  Remove the top rear cover.

3.  Disconnect the two pin connector from the dis-

penser main wiring harness.

4.  Remove the temperature probe by firmly pulling-

up on the tube at the tank lid. This will disengage 

the grommet from the tank lid.

5.  Slide a new grommet on to the new temperature 

probe.

6.  Insert the temperature probe through the hole 

in the tank lid and press the grommet firmly and 

evenly so that the groove in the grommet fits into 

the tank lid.

7.  Reconnect the two pin connector to the dispenser 

main wiring harness.

BLKor ORN pin 1
WHI pin 2

 

  SHORTED 

0 Ω 

0VDC

 

32° F 

31.2k - 34k Ω 

3.0VDC

 

0.0° C

 

77° F 

9.8k - 10.2k Ω 

1.5VDC

  25.0° C

 

OPEN 

INFINITE 

5.0VDC

NOTE: ALL FIGURES LISTED ABOVE ARE APPROXIMATE.

49179  012214