Bunn CDBCF-DV, CDBC APS-DV, CDBC-MV, CDBC-DV Diagnostics, Cause, Things To Check, Page, Flashes

DIAGNOSTICS

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.

FLASHES	CAUSE	THINGS TO CHECK
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

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