Turbo Chef Technologies i5 service manual Troubleshooting F4 MONITOR Door Monitor Defective

42 TROUBLESHOOTING

Troubleshooting:

F4: MONITOR (Door Monitor Defective)

								Replace the F3 or F4
					Is the F3 or F4 fuse blown?		YES
			NO					fuse (see page A-5
								through A-6).
Are the switches open-
ing in the correct
sequence (P, S, M)? To						Readjust the monitor safety switch.
access TEST MODE or for
						See page 26 for instructions.
info on status indicators,
				NO		Disconnect oven from power supply
see page 15.						and then reconnect. The fault
						should clear.
	YES
						Disconnect oven from
		NO
Are the switches
						power supply and then
closing in the
						reconnect. The fault
correct sequence		YES
						should clear.
(M, S, P)?

Troubleshooting:

F5: MAG TEMP (Magnetron Over Temperature)

	Verify wiring. If neces-
	sary, replace the cooling						Open the top cover, place the oven in
	fans (see pages A-7				NO		TEST MODE and test the magnetrons
	through A-8).						(see page 15). Are the magnetron
							cooling fans operating?
Verify wiring to
magnetrons, and verify							Do the magnetrons pass testing in the
					NO
magnetron thermostats are							TEST MODE? See page 15.
not open. Are wiring and
thermostats ok?								YES
				Fault message
		NO		should disappear.
Correct wiring/
						Replace the magnetron(s) (page A-12
replace the thermo-
			YES
						through A-13) and test again in TEST
stats (pages A-12
through A-13).						MODE. Do the magnetrons pass testing?

	Is the airpath into the electri-
	cal compartment blocked or
YES
	clogged with debris? Check
	the cooling fan finger guards
	and filter on the back panel.

NO	YES
	Remove the debris
	or reposition the
	oven away from
	obstruction.

YES
		Replace the control board
	NO
		(pages A-7 through A-8).