Specifications

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