Service manual

72 70380601
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NetMaster Troubleshooting
30.Unit Will Not Heat – Gas (continued)
Please see following page for wiring diagram information.
YES
NO
Replace
stove limit 1.
Is there voltage across
stove limit 1?
Correct wi
ring
between terminal 2
of ICM and stov
e
limit.
Is there
v
oltage to
te
r
minal 2 of
the Ignition Control
Module (ICM)?
Replace ICM board
.
Is there voltage at
terminal 1 of ICM
board?
Correct wiring
between gas
valve
and ICM board.
Is there voltage across
the coils of the gas
valve?
Replace gas valve
coils or complete
gas valve.
Is there gas flow
through the gas valve?
Replace high
voltage ignition
cable or igniter.
Does the igniter spark?
Unit operational. Is there a flame?
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
YES
(12)
(15)
Correct wiring to
input side of
stove limit 2 and
stove limit 1.
Is there voltage to the
input side of the
stove limit 2?
NO
YES
(13)
Replace
stove limit 2.
Is there
voltage across
stove limit 2?
NO
YES
(14)
(16)
(17)
Note
: Make sure unit is
not in a loc
k out
condition.
TMB2231S
TMB2231S