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70410501
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Troubleshooting
37. CE OM Models: No Heat With Cycle Selected, Unit Running and Calling
For Heat (continued)
208-240 Volt/60 Hertz/3 Phase and 460-480 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Is there
voltage to the
output of the
cabinet
limit?
TMB2164S-b
Check for proper
airflow. Replace
cabinet limit.
Is there
voltage to the
COM terminal
of the airflow
switch?
Correct wiring
between airflow
switch and
cabinet limit.
Yes
No
No
Is there
voltage to the
N.O. terminal
of the airflow
switch?
Check for proper
airflow. Replace
airflow switch.
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 proper
airflow. Replace
stove limit if
necessary.
Is there
voltage
to HC1?
Correct
wiring
to HC1.
Is there
voltage to
terminals T1, T2
and T3 of
HC1?
Correct wiring
between HC1
and supply.
Is there
voltage to terminals
L1, L2 and L3 of
HC1?
Replace
HC1.
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
No
Unit
operational.
Continued from
previous page
Yes
Is there
voltage across the
elements?
Correct wiring
to the
elements.
Do the
elements produce
heat? NOTE: If
elements are glowing a
bright red/orange, there
is not enough
airflow.
Check for
opens or
shorts in the
elements.
Yes
No
Yes
No
Yes
Summary of Contents for ATB50CG
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