What is flame overthrow?
My partner went on a service call for this unit because the heat wouldn't come on. It has 2 boards on it and the board with the indicator light is blinking 3 times. On the unit, it says that if the light is blinking 3 times is is usually flame overthrow but he checked it and it checked out ok. He has ordered a new board but we are hoping someone has info or troubleshooting advice on this unit. We're not too familiar with Lennox units.
What is flame overthrow?
Officially, Down for the count
YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET
I know enough to know, I don't know enough
Why is it that those who complain the most contribute the least?
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I think it is rollout. Does that have the manual-reset rollout in it. Where the terminals corroded and not making a good connection?
If that's the case, there is much more that needs to be checked
Officially, Down for the count
YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET
I know enough to know, I don't know enough
Why is it that those who complain the most contribute the least?
MONEY CAN'T BUY HAPPINESS. POVERTY CAN'T BUY ANYTHING
flame what...... never heard of the term in all my life..... good luck .......
it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair
Overthrow
http://youtu.be/D9DkciMTsLI
Officially, Down for the count
YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET
I know enough to know, I don't know enough
Why is it that those who complain the most contribute the least?
MONEY CAN'T BUY HAPPINESS. POVERTY CAN'T BUY ANYTHING
oh now I get it .....
it was working.... played with it.... now its broke.... whats the going hourly rate for HVAC repair
The 3 flash code - Flame Rollout Switch Open or Prove Switch Open or Closed.
The Flame Rollout is a 290ºf (+/- 12ºf ), manual reset switch.
The Combustion Air Prove Switch closes on negative pressure fall, showing the inducer motor is up to speed before allowing the ignition sequence to continue.
Did you have the door/panel back on burner compartment when you were testing?
Did you do any testing of the combustion blower or it's capacitor?
Sorry, but I don't post manuals in this "OPEN" forum.
Instead of learning the tricks of the trade, learn the trade.
I always check the circuit path from the molex plug connection(s), just because the roll out is closed doesn't mean it's finishing
We don't discuss step by step diagnostics in the open forums. Get your post count up to 15 and apply for pro membership, so we can deal with your questions in the restricted access Pro forums.
Even the T series has a wiring diagram. I would follow it and everything should be clear. What is the serial number?
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2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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hell, he's a one & done, apparently didn't get the answer they wanted.
and I'm a little concerned about the "partner" thing?????
It`s better to be silent and thought the fool; than speak and remove all doubt.
[Avatar photo from a Florida training accident. Everyone walked away.]
2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
AOP Forum Rules:
Officially, Down for the count
YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET
I know enough to know, I don't know enough
Why is it that those who complain the most contribute the least?
MONEY CAN'T BUY HAPPINESS. POVERTY CAN'T BUY ANYTHING
Flame roll out, change the board. Imagine if all mechanics did the same!