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Rheem classic 90 plus furnace. Two green lights on the panel (not blinking, solid), will not do anything. Thermostat clicks, indicating it should be turning heat on. No blower unless i manually turn t

Strange thing is, this issue is my upstairs attic unit. The down stairs unit is working just fine, it has same 2 green lights on the panel. Neither blinking, yellow, or red?

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Could be a thermostat or control board problem.

Posted on Feb 13, 2015

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You will need to jump out the tstat to determine that the tstat is sending the signal to the furnace. Sounds like a thermostat problem.

Posted on Nov 27, 2014

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My upstairs temperature is 80 degrees and the downstairs is 69 Honeywell focus pro th6000 is set at 69. Why is the upstairs so drastically hot?unit is located upstairs& thermostat is downstairs


if there is no control of air movement between floors and you have it on cooling then any cold air will go down to the lower floor
or alternately if you have it set on heating all the hot air will rise to the upper floor
where is the system located (upstairs or down stairs ) and where is the thermostat located
to get control close any upstairs to down stairs doors or erect a heavy curtain across the stair well

Dec 17, 2016 | Honeywell Heating & Cooling

1 Answer

Had three 50-gal American Standard water heaters installed Dec. 2009 Two upstairs in attic, one downstairs at ground level. Attic location used because heaters being replaced were up there. Upstairs...


Plumber is right.
Problem is not amount of air in attic. Problem is how hot the air is.
Oxygen molecules separate apart in very hot air and pilot light goes out since there is not enough oxygen density to support combustion.
http://waterheatertimer.org/images/Water-heater-in-attic-800.jpg
http://waterheatertimer.org/pdf/Attic-Ventilation-and-Pilot-Outage-in-Gas%20Water-Heaters.pdf

More ventilation is needed.
Plumber is not ventilating expert, and not responsible for attic ventilation that builder failed to install. Plumber should do a survey of location before installation to make sure gasoline vapors are not stored nearby, but summer attic ventilation is gray area until more general-public folks become aware of problem. Hotter summers temperatures will spread that information.

Hire local home center to install roof vents AND soffit vents.
Note: You also need soffit vents.
Remember a vent on the roof is like sucking air out of a coke bottle. The roof vent is no good unless air can also enter the attic from another vent located in the soffit.

Another solution is electric water heater for very hot locations.
Or install solar-assisted water heater.
http://www.hotwater.com/products/residential/cirrex_solar.html

Jul 28, 2011 | American Standard 40 G Natural Gas Water...

1 Answer

We have 2 units (upstairs and downstairs) the upper unit no longer cools, we've had several calls done and a coil was replaced, issue persists and it will not cool below 85 degrees. The downstairs unit...


Check the supply air tempeture and the retun air temp.. to do this you put a termitor where the air come out and take the temp. then you check the air at the return where it goes back to the blower. you shoudl see a 15-20 degree diffrence. the oterh thing MIGHT be that cold air is heavier than warm air so it sinks down stairs. close off all the rooms upstairs might help .

Jul 18, 2011 | Heating & Cooling

1 Answer

My upstairs heating is blowing cold air. The air handler in the attic is running but no heat. Down stairs is fine, I get heat


Question: Is your heat produced by a furnace? (If so-- what kind of fuel?)
Or is heat produced by Air Conditioning nits working in reverse-- called Heat Pumps?

If Heat Pumps, You realize that when it gets very cold outside, there is not much 'heat' out ther, to get the heat from outside temperature, right?

Sometimes the out-door coils will freeze up, and you get even less heat then--

Please tell us more-- so we can take the clues you give us, and we'll trouble shoot the problems as best we can remotely, like this-

Mack B

Jan 26, 2011 | American Standard Heating & Cooling

1 Answer

A/C unit in attic is leaking a substantial amount of water


It can be a low refrigerant(freon) issue,dirty coils,too slow fan motor.

Jul 16, 2010 | Heating & Cooling

1 Answer

I have a Lennox elite series furnace. The vents are just blow out cold air, not heat. The theromstat is now working strange. I set the digital theromstat at 75 deg. and then place the thermostat on hold....


You did great! Yes you have a heating system error not a thermostat issue. The 2 blinking lights is an indication something is wrong. Now what you need to do is to remove one of the panels on the heating system and look for a wiring diagram pasted on the reverse. On this diagram there will be a diagnostic chart explaining where to start looking for an issue based on 2 blinks. Because each model is different, a 2 blink error code could indicate a bad pressure switch, plugged air filter or any other thing.

Mar 21, 2010 | Heating & Cooling

1 Answer

We have a tv upstairs and one down stairs, they


Since the antenna is on the roof the signal has further to travel to get to the downstairs antenna and as a result the signal is weaker. Install a device on the antenna line before the first TV called a signal booster. This unit plugs into the wall and gets connected to the antenna wire too. It will improve the signal for both televisions.

Aug 14, 2009 | Televison & Video

2 Answers

Where is your attic in animal crossing


All yo have to do is go upstairs. There is no true "attic" just the "save room."

Jun 30, 2009 | Nintendo Animal Crossing for DS

1 Answer

AC unit seems to be working normally but not cooling house


If you are referring to the secondary pan there could be a problem with your drain line.i would find the drain at the exterior of your home and **** it out with a wet vac..most A.H.Us have float switches or moisture sensors.They will shut down the unit if the drain clogs.

Jun 21, 2009 | Weather King 10AJA3601AH Air Conditioner

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