TurboChef i5 Service Manual page 59

42 TROUBLESHOOTING
Are the switches open-
ing in the correct
sequence (P, S, M)? To
access
TEST MODE
info on status indicators,
see page 15.
YES
Are the switches
closing in the
correct sequence
(M, S, P)?
Verify wiring. If neces-
sary, replace the cooling
fans (see pages A-7
through A-8).
Verify wiring to
magnetrons, and verify
magnetron thermostats are
not open. Are wiring and
thermostats ok?
NO
Correct wiring/
replace the thermo-
stats (pages A-12
through A-13).
F4: MONITOR (Door Monitor Defective)
NO
Is the F3 or F4 fuse blown?
Readjust the monitor safety switch.
or for
See page 26 for instructions.
NO
Disconnect oven from power supply
and then reconnect. The fault
should clear.
Disconnect oven from
NO
power supply and then
reconnect. The fault
YES
should clear.
F5: MAG TEMP (Magnetron Over Temperature)
Open the top cover, place the oven in
NO
TEST MODE
(see page 15). Are the magnetron
cooling fans operating?
Do the magnetrons pass testing in the
NO
TEST MODE
Fault message
should disappear.
Replace the magnetron(s) (page A-12
YES
through A-13) and test again in
. Do the magnetrons pass testing?
MODE
Troubleshooting:
Troubleshooting:
and test the magnetrons
? See page 15.
YES
TEST
Replace the F3 or F4
YES
fuse (see page A-5
through A-6).
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
Remove the debris
or reposition the
oven away from
obstruction.
YES
Replace the control board
NO
(pages A-7 through A-8).
YES