Will Not Heat - Steam - Manual Timer - ALLIANCE T30 Series Troubleshooting Manual

Electronic Control Troubleshooting
47. Will Not Heat – Steam – Manual Timer
NOTE: The following tests are conducted with
the Heat Timer in the "ON" position with the
machine running and calling for heat. Voltage
checks are referenced to transformer neutral.
Is there voltage across
terminals 1 & 6 of
the temp control bd?
YES
Is there voltage across
YES
terminals 5 & 6 of
the temp control bd?
NO
Is the thermistor
shorted or open?
NO
Is temperature
selection switch
shorted or open?
NO
Replace the
temperature
control board.
CONTINUED
ON NEXT
PAGE
88
Single and stacked units with and without time
NO
YES
Replace thermistor.
YES Replace selection
switch.
Is there
NO
voltage to
between fan motor
terminal 3 of
fan motor?
YES
Is there voltage
YES
across terminal
3 & 5 of fan
motor?
NO
Correct wiring
between motor
terminal 5 and
temp control
board terminal 1.
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
delay boards, manual timers.
Is there voltage at
airflow switch N.C.
terminal to transformer
Is there voltage at
terminal 6 on CR1 to
transformer neutral?
Is there voltage from
terminal 4 on CR1 to
transformer neutral?
YES
Is unit equipped with
time delay board?
Is there voltage from
terminal 6 on CR2 to
transformer neutral?
Correct wiring
terminal 3 and
CR1 terminal 4.
Is there voltage from
terminal 4 on CR2 to
transformer neutral?
Replace fan motor.
Adjust the airflow
NO
switch or replace if
neutral?
YES
Correct wiring
NO
between airflow
terminal 6 on CR1.
YES
NO
Replace CR1.
YES
NO
Correct wiring
NO
between terminal 6
on CR2 to terminal
YES
NO
Replace CR2.
YES
Correct wiring
between CR2
terminal 4 &
terminal 1 on
temp control
board.
inoperative.
switch and
4 on CR1.
T019D
T019D
70291301