PROBLEM:
No Spark and Furnace Does Not Work
Possible Solution:
- No power to furnace
- Thermostat not calling for heat
- Loose connections to/from control module
- Damaged spark electrode
- Faulty pilot burner
- Faulty control module
PROBLEM:
Spark is Present, but Pilot Does Not Light
Possible Solution:
- Loose pilot valve wiring
- Pilot gas line bent or obstructed
- Pilot orifice plugged; check and clean orifice
- Faulty pilot gas valve
- Faulty pilot burner
- Faulty control module
PROBLEM:
Pilot Lights, but Main Burner Does Not Come On
Possible Solution:
- Check that sensor cable and high voltage cable are separated
- Faulty pilot gas valve
- Faulty pilot burner
- Faulty pressure switch / limit switch
- Hose from pressure switch is loose
- Faulty control module
