Question about Heating & Cooling

2 Answers

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?

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,033 Answers

Could be a thermostat or control board problem.

Posted on Feb 13, 2015

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 9 Answers

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

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How do i prime the water trap on a rheem classic 90

This trap will fill itself up when the furnace runs for the first time. It does not need to be primed to make it work. If you have the drain end above another p trapped drain.

Oct 28, 2014 | Rheem Classic Series 90%...

1 Answer

Rheem classic 90 furnace not turning on

Check thermostat. Check for a burnt out ignitor.

Feb 27, 2012 | Rheem Heating & Cooling

1 Answer

I triped my breaker that controlled the unit and reset breaker but of the 2 green lights the one on the left is blinking unit power on but doesnt stay on for but a few miniutes please advise the unit...

Please don't try again and again. The breaker tripping is an indication of fault in your a/c.

Check indoor and out door for loose contacts.If anything, rectify. Check blower motor, fan motor and compressor for grounding. Check with an ohms meter, keep one end with any tewrminal and second with ground. If anything reading even 00.00, it's grounding. The particular spare/s to be replaced. Call repairman to check, if you're not aware of it. Thanks.

Feb 08, 2011 | Heating & Cooling

1 Answer

On occasion, my furnace will not kick on at

If your Rheem furnace is less than 10 years old, it may store an error code to help you figure out if it is the furnace or the thermostat. Look at the circuit board for a blinking light. If you have to remove the panel that opens up the door safety switch, it will erase the code. Look for a small viewing port. Next time the furnace fails, prior to doing all the things you did last time, look thru the viewing port to count the number of blinks. Once you get the number, open the cabinet and on the wiring diagram glued to the back of one of the panels'\; there will also be an error code chart. It may give you a starting point where to look. If you have no error code, chances are that your thermostat is freaking out or has a bad connection. Hope this helps.

Dec 28, 2009 | Honeywell CT3200 5-2 Day Electronic...

2 Answers

Rheem Classic Series Super Quiet 80 gas furnace problem

I have this same POS model. It is not the thermostat. this model is just garbage and cant wait to get something that works right. i have been fighting this thing for 4+ years now.

Dec 25, 2009 | Heating & Cooling

1 Answer

My rheem cri II furnace will not work unless I turn the gas valve knob from on to off and back. The green led light is blinking then solid when I reset knob. Any ideas?

The green light is flashing an error code. When you turn the knob off and back on you are resetting the safety. Look for the number of blinks in a row. Then find the legend for codes on gas valve or on furnace. When is the last time you changed the air filter? A dirty filter can cause this problem.

Nov 07, 2009 | Heating & Cooling

1 Answer

Ruud achiever 90 plus won`t start

Check the data information on the unit there should be a troubleshooting guide that tells you what the two lights blinking once means. hope this helps.good luck. normally found with schematic

Feb 05, 2009 | Ruud UBHC Air Conditioner

1 Answer

Ruud achiever 90 plus blower not working

does the furnace ignite?? your system may not have been lighting and has gone into ignition lockout count the codes of the led lights then remove panel led diagnostic codes are listed there.
if led codes indicate no problem verify capacitor is good and that mtr is getting 115 volts.

Sep 15, 2008 | Ruud UBHC Air Conditioner

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

329 people viewed this question

Ask a Question

Usually answered in minutes!

Top Heating & Cooling Experts


Level 3 Expert

2458 Answers

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Are you a Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides