TROUBLESHOOTING (cont.)

HEATING CIRCUIT

PROBLEM

Water does not heat to proper tem- perature

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.

PROBABLE CAUSE

1.Display flashing

2.Water not touching temperature probe

3.Water Level Probe Sensing Sys- tem

4. Temperature Probe

5. Limit Thermostat

REMEDY

Brewer has shut down due to mal- function (See Diagnostic Chart in manual, Page 20, or under top lid).

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

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 4.

Remove the probe from the grom- met and submerge in a water bath of approximately 70°F(21°C). Con- nect an ohmmeter to pins 3 and 4 of the J3 connector. At 60°F(16°C) the reading should be 15.3k ±2k OHMS, at 70°F(21°C) the reading should be 11.8k ± 2k OHMS, and at 80°F(27°C) the reading should be 9.3k ± 2k OHMS. If the probe is within these parameters, reconnect the J3 plug to the control board.

Disconnect the brewer from the power source. Check for continuity across the limit thermostat termi- nals. Continuity should be present. If not replace the limit thermostat. (See page 25)

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Bunn CDBCF-DV, CDBC APS-DV, CDBC-MV, CDBC-DV, CDBCF-MV Heating Circuit Problem, Water does not heat to proper tem- perature
Page 13 Page 15

CDBCF-MV, CDBCF APS-DV, CDBCF APS-MV, CDBC-DV, CDBC-MV specifications

The Bunn CDBCF-DV is a distinguished coffee brewer designed for commercial use, ideal for establishments that demand high-quality coffee at a fast pace. This brewer is notable for its innovative design and advanced brewing technology, making it an essential asset for cafes, restaurants, and coffee shops.

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