Reznor VPT Unit Installation Manual - Manual (Page 36)

36
Do the amber lights
remain illuminated after 15
seconds?
NO
YES
Does the burner spark? YES
NO
CHECK: -
1. Spark gap correct (7/64" ± 1/64").
2. Ignition controller.
3. Transformer.
4.Intergrity of appliance ground connection.
5. Probe leads connected / integrity
CHECK: -
1. Gas valve On / Off switch set to On.
2. Integrity of electrical connections.
3. Integrity of appliance ground connection.
4. Manifold pressure.
5. Supply pressure.
6. Probe leads connected / integrity.
7. Flame sensor probe clean.
8. Hose connection to pressure switch.
9. Air inlet, outlet, and emitter tubes for
obstructions.
END
If the heater still fails to operate
correctly, contact your local
representative.
To aid in the trouble shooting process
the UT controller has an LED flash code
diagnostic sequence:
Steady Off No control Power
Steady On Power Applied, Control OK
1 Flash
Combustion Pressure Switch Open With Blower On
2 Flashes Combustion Pressure Switch Closed With Blower Off
3 Flashes Lockout From The Three Ignition Trials
4 Flashes Lockout From Five Flame Losses
5 Flashes Control Hardware Fault Detected
6 Flashes Lockout From Five Pressure Switch Losses