Thermo Products 30, OPB (24, 36)- 80 service manual Control System Action

All installations and services must be performed by qualified service personnel.

Control System Action

OPB 2 of 2

Main Burner

Operation

Repeat Ignition

Trial

Call for Heat

Satisfied

System Lockout

End of Cycle

After 45 second delay, the ignition electrodes are de- energized. The circulating air fan is energized at heating speed. The (optional) electronic air cleaner & humidifier are energized.

When thermostat is satisfied,

contacts open and the oil

valve is de-energized. After a 2 minute burner off delay, burner motor is de-energized. The 2 minute delay- to- fan-off period begins.

After the delay-to-fan-off period ends, the circulating air fan and {optional) electronic air cleaner are de-energized.

If ignition attempt is unsuccessful, the ignition control module goes into system lockout.

If system is in lockout,(check if LED is flashing fast) try to recycle the system by depressing the RESET button on the ignition control module.

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