Bunn ITCB-DV manual Tank heaters, Problem is found, Connect a voltmeter across, Working order

TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE	REMEDY
Water will not heat or display shows	4. Tank heaters	Remove power from the brewer.
HEATING TIME TOO LONG.		Check for continuity between the
(Continued)		white terminal of the terminal block
		(or red terminal on 208/240V mod-
		els) and the black wire on the relay
		on the control board (Toggle switch
		must be in 120/208-240V position
		on 208V and 240V models). There
		should be a low OHM reading. If
		not continuity is present, check for
		a wiring or switch problem (consult
		wiring schematic), then replace the
		tank heater if no wiring or switch
		problem is found.
	5. Control Board	Remove power from the brewer.
		Connect a voltmeter across the
		tank heater. Reapply power to the
		brewer and refer to testing outputs
		on page 56. If the voltage measured
		when the tank heater is turned on
		is very low or zero, then substitute
		a control board know to be good
		working order.

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