High Efficiency Furnace Problems And Reviews

Question: Hvac question: what is ment by the term redundant pilot ignition system in a high efficiency furnace?

(Posted by: justdavesplace on 2007-02-22 12:55:02)

A high efficiency gas furnace, what is a redundant pilot ignition system- redundant being the key word here. What do they mean by redundant?

Posted by: rroythomas on 2007-02-22, 13:07:37

SAFETY STUFF So's ya don't Smothercate or BleW-Up... "A self-checking fuel ignition system of the pilot ignition type including a sampling flame sensor which effects periodic testing of the operability of a spark generating circuit to provide ignition sparks, and an energizing circuit which operates independently of the spark generating circuit but under the control of the flame sensor, to control the operation of fuel valves of the system and to effect the shut down of the system for loss of flame or ignition spark. "

Posted by: Sean B on 2007-02-23, 00:59:02

I think you either have a dirty flame sensor or a bad hot surface igniter. If your furnace lights and then goes out then its a dirty flame sensor. Otherwise its a bad ignitor. Redundant is meaning it keeps trying to light and it doesn't prove ignition because of one of those problems. Prices should be about $100 for a flame sensor cleaning. Some places try to sell you a new flame sensor. Tell them to clean your old one, its a scam. A hot surface igniter will cost about about $150. Good luck