Bloomfield 1093, 1091, 1092, 1090 Error Detection, What to Check Description Corrective Action

ERROR DETECTION

This brewer is designed to perform a continuous internal diagnosis, and to signal faults by flashing all the lights. In fault mode, warmers, heating element and water fill solenoid are turned “off”, and most keypad functions are disabled.

To reset the brewer after the fault has been corrected, press and hold the CANCEL key for 3 seconds, or disconnect the brewer from electrical power for three seconds.

645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer

WHAT TO CHECK	DESCRIPTION	CORRECTIVE ACTION
Has the water tank	On initial startup, an attempt to heat a	Tank must be properly filled as
been properly filled?	dry tank will be detected as too high a	detailed on page 6.
	temperature or insufficient temp rise, or	Check hi-limit (see below)
	will trip the high limit.
Has hi-limit safety	Brewer may have been started without	Access hi-limit by removing front
thermostat tripped	water in the tank, or the temp control	panel. Hi-limit is on the left side of
off?	thermostat may require adjustment.	the tank. Use an insulated tool to
		push the red button in until it “clicks”
		and stays. Reset per above.
Check control board	Brewer will go into error mode	Reset by holding the CANCEL key for
and temp probe.	immediately if either the control board	3 seconds. If lights continue to flash:
	or temp probe is defective.	Disconnect temp probe from control
	Temp probe electrical resistance is	board.
	approximately 30KΩ at room temp, and	a. If lights continue to flash, unplug
	Ω	brewer and replace control board.
	2K at boiling. Replace temp probe if	b. If lights stop flashing, unplug
	Ω.
	less than 1K	brewer and replace temp probe.
Check power board	Brewer will go into error mode 4 minutes	Reset by holding the CANCEL key
and heating element.	after energizing the heating element if	for 3 seconds. If lights resume
	insufficient heat rise is detected. The	flashing after 4 minutes:
	heating element is energized by an	Check the voltage across the heating
	electronic power board, and protected	element terminals:
	by the hi-limit safety.	a. If no voltage is present, unplug
	Heating element should receive full line	brewer and replace power board.
	voltage (i.e. 120V, 208V or 240V).	b. If proper voltage is present,
	Be sure the hi-limit safety is reset.	unplug brewer and replace tank
		heating element.
Is the brew	The brewer may occasionally go into	See page 15 for temperature
temperature properly	error mode if the brew temperature is	adjustment procedure.
adjusted?	set too high.

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