Frymaster FBKR18 Series, FBCR18 manual Troubleshooting the 24 VAC Circuit

6.8.2 Troubleshooting the 24 VAC Circuit

WATER LEVEL IN

COOKPOT IS ABOVE

LOWER WATER

LEVEL SENSOR AND

COMPUTER IS

ACTIVATED.

Is 24VAC	No	Probable cause is a
present on J2
		failed transformer.
Pin 7?
Yes
Is LATCH	No	Probable cause is failed
		computer or failed 15-pin
LED illuminated?
		wiring harness.
Yes
Is combustion	No	Is 12VDC	No
		present on J4
air blower runing?
		pin 5?
Yes		Yes
Is cookpot filling?	Yes	Is HEAT LED	Yes
		illuminated?
		No
No		Probable cause
		is a failed interface board
		or failed temperature
		probe.
Is WATER LED		Probable causes are dirty
	No	low water sensor or failed
illuminated?
		interface board, in that
		order.
Yes
Is 24VAC		Probable causes are
present on J2	No	grounded high water level
pin 2?		sensor or failed interface
		board.
Yes

Probable cause is a

failed computer.

Is 24VAC	No		Probable cause is a
present on J2
			failed interface board.
Pin 4?
Yes
Is 24VAC	Yes		24VAC circuit
present on gas
			is OK.
valve?
No	Probable causes are blown
	ignition module fuse, failed
	ignition module, or failed
	centrifugal switch in blower, in
		that order.

Probable causes are failed solenoid valve or broken or loose wire.

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