Bunn CEZF, CDBC TROUBLESHOOTING cont HEATING CIRCUIT, Problem, Probable Cause, Remedy, Page

Models: CEZF CDBC

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TROUBLESHOOTING (cont.)

TROUBLESHOOTING (cont.)

HEATING CIRCUIT

PROBLEM

 

PROBABLE CAUSE

REMEDY

Water does not heat to proper temperature

IMPORTANT: Make sure no tem- perature tests are taken before the ready light is "ON". Tank tempera- ture must be stabilized before read- ings are taken.

1.Display flashing (CDBC-APS/TC/ TS/TSR) or ready light flashing (CEZ-APS/TS/TSR)

2.Water not touching temperature probe

3a. Dry Plug In Probe Sensing Sys- tem (CDBC-APS/TC/TS/TSR)

3b. Dry Plug In Probe Sensing Sys- tem (CEZ-APS/TS/TSR)

Brewer has shut down due to malfunction (See Diagnostic Chart in manual, Page 19, or under top lid).

Remove probe and grommet. Look into hole on tank lid. Water must be within one inch from top of tank.

A)Disconnect the brewer from the power source. Disconnect the J3 connector from the control board. Check for continuity from the tank mounting screw where the green wire mounts, to pin 2 of the plug, continuity should be present. Pull the temperature probe up about an inch from the grommet. Check for continuity from the outside surface of the temperature probe and pin 4 of the plug, continuity should be present. Connect the J3 plug to the control board and proceed to step 4a.

B)Disconnect the brewer from the power source. Disconnect the J5 connector from the control board. Check for continuity from the tank mounting screw where the green wire mounts, to pin 4 of the plug, continuity should be present. Pull the temperature probe up about an inch from the grommet. Check for continuity from the outside surface of the temperature probe and pin 2 of the plug, continuity should be present. Connect the J5 plug to the control board and proceed to step 4b.

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Bunn CEZF TROUBLESHOOTING cont HEATING CIRCUIT, Problem, Probable Cause, Remedy, Water does not heat to proper temperature