Reznor VPS Unit Installation Manual - Manual (Page 38)

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6. Troubleshooting Guide.
START
Ensure gas & electricity
supplies are enabled.
Turn any external timer
to call for heat (if fitted).
Does the Power On
light illuminate?
NO
YES
Set thermostat to call for
heat at maximum setting
NO
YES
CHECK: -
1. Operation of any timer or control.
2. External fuses.
3. Supply Voltage is 120VAC 60Hz
Is there power to the
burner?
CHECK: -
1. Transformer
2. Integrity of wiring connections.
3. Light.
Does the fan run? NO
YES
CHECK: -
1. Voltage supply to fan terminal 120VAC 60Hz
2. Integrity of wiring connections.
3. Fan.
Do the amber
lights illuminate after a
purge period?
NO
Is there power to
the fan?
YES
NO
CHECK: -
1. Integrity of wiring connections.
2. Pressure switch operation.
3. Ignition controller.
4. Transformer.
Does the Pressure
switch close?
YES
NO
CHECK: -
1. Pressure switch wiring connections.
4. Integrity of wiring connections.
5. Amber lights.
6. Ignition controller.
5. Transformer
CHECK: -
1. Hose connection to Pressure switch.
2. Air inlet, outlet, and emitter tubes for obstructions.
3. Pressure switch operation.
4. Supply voltage 120VAC / 60Hz
5. Transformer.
6. Ignition Controller.
YES