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Impinger I -–1000 Series Service Manual - Domestic24
Light#5 in 24VAC at terminal #1 of Johnson control valve or "PV" on Honeywell Control.
Light#6 in 24VAC at terminal #3 of Johnson control valve or "MV" on Honeywell Control.
CODE:
All lights off - lights of main power, main fan off, air pressure switch out.
1 on 2 off 3 on 4 off 5 off 6 off - Burner Motor Relay bad.
1 on 2 on 3 on 4 off 5 off 6 off - Burner Motor Centrifugal Switch bad.
1 on 2 on 3 on 4 on 5 off 6 off - Ignition Control bad.
1 on 2 on 3 on 4 on 5 on 6 off - Pilot Shield missing or warped, Flame Sensor bad, Pilot
- Orifice plugged, or Gas Valve bad.
1 on 2 on 3 on 4 on 5 on 6 on - Unit still not working Main Orifice plugged, Gas Valve bad,
- Temperature Control bad.
- However, Main Orifice would not be intermittent problem.