Bunn CDBC TWIN Guía Del Usuario

Page 20

Intermittent flashing of the bank of temperature indicators indicates that a fault exists. Count the number of flashes
between pauses and use this chart as a guide to investigating the fault.

1

Dry Plug - In Fault -

Water Pressure (is water shut off?)

Sheath of temperature probe dry for 10 minutes after power-up Temperature probe wiring

Fill valve wiring, function, & strainer
Green wire between tank and circuit board

2

Low Tank Level Fault -

Water pressure (is water shut off?)

Level probe dry for 7 minutes after fill valve is energized

Level probe wiring
Temperature probe wiring
Fill valve wiring, function, & strainer

3

Low Water Temperature Fault -

Tank heater wiring & function

Sensor in tank is calling for heat for 30 minutes or more

Temperature probe wiring

4

Tank Sensor Disagreement -

Temperature probe wiring

Level probe detects water, but dry plug-in probe dry

Level probe wiring
Green wire between tank and circuit board

5

Temp Sensor Out-of-Range - High

Sensor not connected to circuit board

6

Temp Sensor Out-of-Range - Low

Sensor wires shorted together or to chassis

36672 030104