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One of my Techs. Went on a no air flow call yesterday. Pulled fresh 'possum out of the squirrel er 'possum cage. Had to repair the return duct also.:grin2:

Could be the board but most likely it's the flame sensor.

If they used the Lennox sub cooling chart to charge your system you should be fine. The correct charge can vary with line st length. Enjoy you new system.

I always use a mfd setting on my meter. After discharging of course.

Do you have a limit open?

Done. Waiting on the committee .

Thank You! All for the welcomes.
I hope I can add some helpful information.

I'm still old school. Mechanical guages, digital thermometer and a T/P chart.

We have about a 50/50 success with it. Always advise the customer up front. We use the stuff in the can. If the leak is in the rail of a prep table it can be the only hope.

A mini spit in the kitchen might help and could be used only when the heat load in the kitchen were high. It could be left off the rest of the time. A exhaust fan can be used but the air removed from...

See installations like that near the coast here in FL. Sometimes mini splits 30' in the air make me shake my head.

I'm guessing high limit or high head in heat and frozen in the summer. How something like that ever works at all is amaizing and then there's the system that seems perfect and gets all quirky for no...

Years ago I worked for a company that provided factory warranty for Amana. Went on a warranty no cool call for a window unit. Knocked on the door and a child opened the door and let me in. Walked...

What is your inlet gas pressure? LP or Natural? If you have good inlet gas pressure and no outlet pressure when there is 24 volts across the gas valve coil then the gas valve is bad.

Our yard has been broken into twice in the last year and a half. Seems copper was what they wanted more than tools or even r-22!

I would think $500 would be a fair price. Don't think you could give a parts or compressor warranty though.

If the price doubles again this year it's going to be priced out of the market regardless of production levels!

I've had some luck tapping the loose grids back in place and "pinging" the grid intersections with a small punch. Buys some time but a plate or machine replacement is the final solution.

I stand corrected. After rerreading this thread I say it is under charged. What is the TD across the coil?

How did 400 die when there were only 200 in th bar? Boston in November thr heat was most likely on. What kind of furnace was it?

A restriction anywhere in the liquid line will show a temperature drop if there is any liquid in the system. That will be the clue you need.

I'm reading this on my iPad as we speak. It has it's pros and cons. For one Lennox Davenet is not supported yet on iPad. They said sometime soon. Strange I can use it on my Android phone but not on...

What is a snowmobile? :grin2:

Thank you for the welcome. I hope I can add something to the forum.

34 years in the trade. State Certified Class HVAC Contractor and am currently a Service Manager for a HVAC company in Central Florida.