Attwood Furnace Help....please
Happy Canadian Thanksgiving I need some help on my furnace. It's an Attwood 8900-II. When I put the furnace on I can hear the van come on. After half a minute or so the igniter will come in an...
Forum Discussion
The Spark Electrode provides high voltage spark for ignition.......which is happening (warm exhaust)
BUT it is also used for FLAME PROOFING....ie: main flame lights off--generates milliamp signal that goes back to circuit board to prove flame lit.
No signal return....DC gets dropped to gas valve/no flow
Due to flame lit signal being milliamps
Spark electrode:
*Must be engulfed in flame
*Must be clean..no soot/carbon
*Must have clean/tight wire connections
*No cracked ceramic insulator
You have Good strong spark.....flame IS lighting......Just need to clean up/check spark electrode so milliamp signal can get back to circuit board
(No thermocouple used.......pilot flame systems use them)
BUT it is also used for FLAME PROOFING....ie: main flame lights off--generates milliamp signal that goes back to circuit board to prove flame lit.
No signal return....DC gets dropped to gas valve/no flow
Due to flame lit signal being milliamps
Spark electrode:
*Must be engulfed in flame
*Must be clean..no soot/carbon
*Must have clean/tight wire connections
*No cracked ceramic insulator
You have Good strong spark.....flame IS lighting......Just need to clean up/check spark electrode so milliamp signal can get back to circuit board
(No thermocouple used.......pilot flame systems use them)
