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Troubleshooting
50. CD Models: No Heat With Vend Satisfied and Unit Running
208-240 Volt/60 Hertz/3 Phase Gas Nonreversing
NOTE: All voltage checks are referenced to neutral unless stated otherwise.
CD Models: No heat
with vend satisfied
and unit running
Is there
voltage to the
input of the motor
switch?
TMB2177S-a
Correct wiring to
the input of motor
switch.
No
Is there
voltage to the
output of the motor
switch?
Replace
motor.
Is there voltage
to the input of the
cabinet limit?
Correct wiring
between cabinet
limit and motor
switch.
Is there voltage
to the output of the
cabinet limit?
Check for proper
operation, replace
if necessary.
Is
there voltage
to the COM terminal
of the airflow
switch?
Correct wiring
between airflow
switch and
cabinet limit.
Is
there voltage
to the N.O. terminal
of the airflow
switch?
Check for proper
airflow and
function of the
airflow switch.
Replace airflow
switch if
necessary.
Is
there voltage
to the input of the
stove limit?
Correct wiring
between
stove limit and
airflow switch.
Is
there voltage
to the output of the
stove limit?
Check for
blockage and
proper airflow.
Replace stove
limit if necessary.
Yes
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
Yes
Continued on
next page
Yes
Is
there voltage
to the N.C. terminal
of switch B?
Correct wiring
between switch B
and stove limit.
Yes
No
Is
there voltage
to the COM terminal
of switch B?
Check for proper
operation, replace
switch B if
necessary.
Yes
No
Yes
Summary of Contents for ATB50CG
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