Reznor VCT Unit Installation Manual - Manual (Page 42)

42
Do the amber lights
remain illuminated after 11
seconds?
NO
YES
Does the burner spark? YES
NO
CHECK: -
1. Spark gap correct (7/64" ± 1/64").
2. Ignition controller.
CHECK: -
1. Gas valve On / Off switch set to On.
2. Integrity of electrical connections.
3. Supply polarity.
4. Integrity of appliance ground connection.
5. Manifold pressure.
6. Supply pressure.
7. Probe leads connected / integrity.
8. Flame sensor probe clean.
9. Hose connection to pressure switch.
10. 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 a 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 Flash Combustion Pressure Switch Closed With Blower Off
3 Flash Lockout From The Three Ignition Trials
4 Flash Lockout From Five Flame Losses
5 Flash Control Hardware Fault Detected
6 Flash Lockout From Five Pressure Switch Losses