Check for 120 VAC to the relay coil. If voltage is not present, trace wiring back to the control box hi-limit. If voltage is present, check to insure contacts are closing. Check for 120 VAC supplied to terminal #6 of the relay. If voltage is not present at terminal #6, trace wiring back to the power source. Replace relay as needed.
Check for 120 VAC supplied to the centrifugal switch. If no voltage is present, trace wiring back to the oven power relay. If voltage is supplied to the centrifugal switch, and the motor is running, but there is no voltage out of the centrifugal switch, replace the main fan motor.
NOTE: See schematic diagram for proper wire numbers on motors.
Check, replace if necessary. Check, replace if necessary.
Check for 120 VAC supplied to burner blower motor. If voltage is not present, trace wiring back to oven power relay. If voltage is present and motor does not run, replace burner blower motor. WITH POWER OFF: Check for locked rotor.
Check for 120 VAC to the primary of the 24 VAC burner transformer. If voltage is not present, trace wiring back to the burner fuse. If voltage is present, check for 24 VAC at the transformer secondary. If no secondary voltage is present, replace the transformer.
Check for 24 VAC to the centrifugal switch of burner blower motor (see schematic diagram for proper wire numbers). If no voltage is present, trace wiring back to the burner transformer. If voltage is present, check for 24 VAC at the output of the centrifugal switch. If there is no output, and the burner blower motor is running, replace the burner blower motor.
Check for 24 VAC supply to the ignition control at terminals 24V and 24Vgnd. If voltage is not present, trace wiring back to the centrifugal switch. Check for 120 VAC supply to the ignition control at terminals L1 and L2. If no voltage is present, trace wiring back to burner fuse. If the above checks are okay, proceed. The ignition control should switch 120 VAC to the hot surface igniter, across the two terminals marked HSI. If no voltage is present, replace the ignition control.
If 120 VAC is present at HSI terminals, visually check to see that the hot surface igniter is heating (igniter may be viewed through port in the end of burner tube). The igniter should glow bright red. Check all connections to be sure they are tight. If the igniter does not heat, replace hot surface igniter.
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| temperature is not exceeding 140° F (60°C), replace thermostat. |
| Cooling fan(s) | 120 VAC should be at the motor. If voltage is not present, trace |
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| wiring back to |
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| or grounds. WITH POWER OFF: Check for locked rotor. |
Oven will not heat | Gas supply | Check for adequate gas supply and closed manual gas valves. |
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| Also check flexible gas line connection for any damage. |
| Main fan | If not operating, refer to “Oven fan will not run”. |
NOTE: These ovens utilize 2 complete burner/temperature control systems. Each system will follow the same troubleshooting sequence.
Oven power relay
Centrifugal switch of main fan motor
Fuse, burner 10Amp
Fuse holder
Burner blower motor
Burner transformer
Centrifugal switch of burner blower motor
Ignition control
Hot surface igniter (located inside burner assy.
Low Profile – 1600 Series Advantage Digital Service Manual – Domestic | 5 |
