ALLIANCE JT37CGI Service Manual Page 30

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30 M411429
Section 3 Troubleshooting
To reduce the risk of electric shock, fire, explosion, serious injury or death:
Disconnect electric power to the tumbler before servicing.
Close gas shut-off valve to gas tumbler before servicing.
Close steam valve to steam tumbler before servicing.
Never start the tumbler with any guards/panels removed.
Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the tumbler is properly grounded.
W002
WARNING
© Copyright, Alliance Laundry Systems LLC DO NOT COPY or TRANSMIT
34. CSH OM MODELS: 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
Step Problem If No, then
1 Is there voltage at H2-13? If yes, continue to next step. Replace micro control.
2 Is there voltage at H2-6? If yes, continue to next step. Correct wiring between H2-6 and H2-13.
3 Is there voltage at H2-5? If yes, continue to next step. Check for proper thermistor operation. Replace micro
control if necessary.
4 Is there voltage to the input of the motor relay? If yes,
continue to next step.
Correct wiring between motor relay and micro control.
5 Is there voltage to the output of the motor relay? If yes,
continue to next step for 1 phase units, Step 11 for 3 phase
units.
Replace motor relay.
6 1 Phase Only: Is there voltage to terminal 3 of CR1? If
yes, continue to next step.
Correct wiring between CR1 and motor relay.
7 Is there voltage to terminal 5 of CR1? If yes, continue
with Step 13.
Continue with Step 8.
8 Is there voltage to terminal 3 of the motor? If yes,
continue to next step.
Replace motor.
9 Is there voltage across the coil of CR1? If yes, continue to
next step.
Correct wiring to CR1.
10 Does CR1 operate? If yes, continue to Step 13. Replace CR1.
11 3 Phase Only: Is there voltage to the input of the motor
switch? If yes, continue to next step.
Correct wiring to motor switch.
12 Is there voltage to the output of the motor switch? If yes,
continue to next step.
Replace motor.
13 Is there voltage across the steam valve coil? If yes,
continue to next step.
Correct wiring to steam valve coil.
14 Unit operational. If unit still doesnt heat, check steam
supply.
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