TurboChef 3240 Service Manual page 57

Does the burner trans-
former have 24 VAC
output (page 26)?
YES
Are the contacts
on the high limit
thermostat closed
(page A-14)?
NO
YES
Is the air pressure
switch closed?
Inspect or replace the
high limit thermostat
(page A-14).
Is voltage
applied to the
combustion
blower?
YES
Replace the
combustion
blower
(page A-14).
Is the 100% and
minimum flame
NO
adjusted correctly
(page 3).
YES
Is at least 1.5 uA
maintained by the
burner (page 28)?
YES
Does the burner trans-
former have line voltage
NO
applied to input?
NO
Check the wiring.
YES
(page 45)
NO
Is the combustion
NO
blower running?
Check the wiring
NO
(page 45).
Adjust the 100% and
minimum flame
(page 3).
Inspect and if needed,
replace the flame sense
NO
rod (page A-14).
Inspect and if needed,
replace the burner
assembly (page A-14).
Replace the burner
transformer
YES
(page A-8).
Is the K3 gas
relay closing
YES
(page 22)?
NO
Is 24 VDC
applied to the
YES
K3 gas relay?
Replace the I/O
control board
NO
(page A-8).
Is the air tube
YES
tightly connected?
NO
Replace the
Replace the
air pressure
air tube.
switch
(page A-14).
Check the
Wiring
(page 45).
Replace the
K3 gas relay
(page A-8).
YES
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