Alliance Laundry Systems CA050L - Gas OM Control: No Heat With Cycle Selected

40 70422101
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Troubleshooting
25.Gas OM Control: No Heat With Cycle Selected, Unit Running and Calling
For Heat
120 Volt/60 Hertz/1 Phase and 208-240 Volt/60 Hertz/1 Phase Nonreversing
460-480 Volt/60 Hertz/3 Phase and 208-240 Volt/60 Hertz/3 Phase Reversing and Nonreversing
Gas OM Models:
No heat with cycle
selected, unit running
and calling for heat
Is there
voltage at
H2-13?
Replace micro
control.
Is there
voltage at H2-
6 of the micro
control?
Correct wiring
between H2-6
and H2-13 on
the micro
control.
Is there
voltage at
H2-5 of the
micro
control?
Check for proper
thermistor
operation. Replace
micro control if
necessary.
Is there
voltage to the
input of fan
motor switch?
Correct wiring
to fan motor
switch.
Is there
voltage out
from the fan
motor switch?
Replace fan
motor.
Is there
voltage to the
input of the
cabinet limit?
Correct wiring
between
cabinet limit
and CR1.
TMB2327S-a
Is there
voltage to
COM terminal
of the airflow
switch?
Correct wiring
between airflow
switch and
cabinet limit.
Continued on
next page.
No
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
No
Yes
Is there
voltage to the
N.O. terminal
of the airflow
switch?
Check for proper
operation and
airflow. Replace
airflow switch if
necessary.
No
Yes
Is there
voltage to
input of the
motor relay?
Correct wiring
between motor
relay and micro
control.
Is there voltage
to the output of
the motor relay?
Replace motor
relay.
Yes
No
Yes
Yes
No
TMB2327S-a