HVAC

Ask a HVAC Question, Get an Answer ASAP!

Have your own HVAC question?

HVAC Technicians are Online Now

characters left:

Not a HVAC Question?

Question

I have a travel trailer equiped with an Atwood Hydroflame furnance model 8500-IV when I turn the unit on it does not light and I get message of "ignition lockout fault" what could be the cause of this and is there a part/s that would must likely of failed

Submitted: 284 days and 2 hours ago.

Category: HVAC

Value: $15

Status: CLOSED

Posted by Kenton Guidry 284 days ago.

Info Request

It appears that your furnace is not lighting. My question to you would be is can you see the flame come on for a for short period of time, or is your furnace not "trying to light". John I made a call and it looks like your unit is a spark ignition. If you were to turn your thermostat off for 30 seconds and then turn the heating back on you should hear an ignitor trying to spark. Please do this and let me know if that is correct and what happens. Thank you.

Edited by Kenton Guidry on 2/11/2009 at 9:24 PM

283 days and 21 hours ago.

Reply

The unit has an electronic ignition, the ignitor tries to spark but it does not ignite. Im not sure if the gas valve is opening . The unit tries to light 3 times and then shuts down and I cannot see the spark jump across the ignitor to know if the contacts (gap) is dirty ie.spider webs or other cotanminites . I know there is propane in my tanks and yes I did open the tanks and bled the air in the lines off befor attempting to light the furnance.

Accepted Answer

It sounds like the flame sensor is dirty. Can you use some sanpaper or other material to clean the spark ignition. I belive this is your problem from what I know.

Accepts:
Expert:	Kenton Guidry
Pos. Feedback:	98.8 %
Answered:	2/12/2009

HVAC Technician

EPA issued refrigeration license, College certificate, and 7 years in field.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.