36
70422201R1
Troubleshooting
20.Cylinder Turns, But Will Not Heat (continued)
TMB2369S-b
Continued from
previous page.
Is there 24 volts
present at input
terminal of airflow
switch?
Replace airflow
switch.
Is
there 24 volts
present at output
terminal of exhaust
high limit
thermostat?
Check for
broken or loose
wire to airflow
switch.
Is there 24 volts
present at input
terminal of
cabinet limit
thermostat?
Replace
cabinet limit
thermostat.
Is there 24
volts present
on org/wht
wire of fan
motor?
Check for
broken or loose
wire to cabinet
limit
thermostat.
No
No
Ye s
No
Ye s
No
Ye s
No
Ye s
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