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I have a Lennox heating and air conditioner that his about

Customer Question
4 yrs old. The...
I have a Lennox heating and air conditioner that his about 4 yrs old. The M/N# XXXXX XXXXX HPD-042-230-01 and the S/N is 5806m14939. The unit will not come on. My thermostat inside of the home that regulates the unit is blank. I have used a wet/dry vacuum to remove any clogs from the plastic pipe that is hanging out of the back of the house. There is no debris, grass or anything else that is around the unit. I have also replaced all filters in the home. When I take off the side panel and push the switch manually the fan comes on but you can feel nothing happening inside the home. What can I do to fix it?
Submitted: 6 years ago.Category: HVAC
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Answered in 1 minute by:
6/18/2011
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,760
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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What is furnace make/model?

 

 

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Customer reply replied 6 years ago

Lennox....model number 13 HPD-042-230-01 serial number 5806m14939

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

That is the outdoor unit. The power for thermostat comes from the indoor unit. That is the number I need.

 

 

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Customer reply replied 6 years ago
Sorry. I have a honeywell thermostat I pulled it off of the wall and the only numbers I see on is TH5220D10290706. Is that what you need? If not, where do I locate the information you need.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Do you know where you change the filter?

 

 

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Customer reply replied 6 years ago
Yes, I have three vents in the home and I replaced the filters behind each of them. There is nothing behind him that I saw when I put in the new filters? There is just an empty whole?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Ok..the indoor blower....usually the filter is there but yours are in the grills.....where is the unit at that blows air through the registers?

 

 

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Customer reply replied 6 years ago
The only unit that I know of is the one that is located outside which is the Lennox. Are you saying that there is another unit some where in the home that I have never seen? Where could it be? I have a small grill that has a hose behind it while the other two just have empty whole's. I thought the unit outside blew the air through the registers but that does not seem to be the case. Help?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Your unit outside has 2 pipes that it to the indoor unit.

 

Here is what the outdoor unit looks like

 

http://www.greenwoodheating.com/products/manuals/heatpumps/13HPD.pdf

 

Follow the pipes and they will lead to the indoor unit. That is what I need the numbers from.

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HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

I apologize but I must go off line now.

 

I will opt to the online experts.

 

I wish you luck!

 

Billy

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Customer reply replied 6 years ago
Ok, let me go outside and follow the pipes. This will take a few minutes. I will get right back to you.
Customer reply replied 6 years ago

Ok, Billy. Thank you for your patience. Whomever is taking over I found the inside unit under the house. What do I do now?

Customer reply replied 6 years ago

I just received a receipt that you took my $30 without someone finishing up where Billy left off. I have not gotten the answers that I need yet. Billy was in the middle of helping me, when he had to log off. Why did you process my payment before you finished servicing me?

Customer reply replied 6 years ago
I am still waiting for help. Is there anyone out there to finish helping me?
Customer reply replied 6 years ago

I am still waiting and now I am getting another request for more money when you have not not finished helping me with my first question. Can some one step up and help me?

Customer reply replied 6 years ago
Anyone?
Customer reply replied 6 years ago

Please finish helping me someone?

Customer reply replied 6 years ago

Help...

Customer reply replied 6 years ago

The inside model number is CB 26 UH 042 R 230 1

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Hello, I am back online. I apologize.....it appears no one picked up the question.

 

Are you still willing to proceed?

 

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Customer reply replied 6 years ago
Thank God you are back, Billy. I have been charged two payments and no one has helped me. I got the model number from under the house it is CB 26 UH-042-R-230-1. The serial number is 600 6H 40 70 1.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

I am really sorry. Let me pull my files for that unit.

 

 

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Customer reply replied 6 years ago
Ok, thank you.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Thanks for your patience. This usually goes smoother.

 

I have the info from all pieces now. First, do you know how to change batteries in the thermostat?

 

Thermostat manual - http://www.alpinehomeair.com/related/Honeywell%20TH5220D%20Install%20Instructions.pdf

 

 

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Customer reply replied 6 years ago
Yes, I do but it has never had batteries in it. I works through the electricity.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Thanks....process of elimination.

 

Next, does the CB26 have power to it?

 

Then if you could....running with those refrigerant pipes is a thermostat wire. It connects the indoor unit to the outdoor unit. See if that wire is intact...

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Customer reply replied 6 years ago

I could hear a little whistling sound coming from the CB26 unit and the wires looked in tact.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

But you do not believe the blower was running?

 

and where the pipes enter the blower unit from outside...is there any frost or ice present?

 

 

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Customer reply replied 6 years ago

There is no air blowing in the home and there was no frost or ice present.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

While at the unit (the CB26) you said you heard whistling?

 

And do you mind a hands on test at the thermostat to bypass the thermostat for a test?

 

 

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Customer reply replied 6 years ago
I don't mind anything at the moment. You tell me how to do it and I will do it. :-)
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Remove top section of the thermostat....the sub base will still be mounted on the wall....on this sub base are wire terminals.

 

R and G are the ones we are interested in right now.....use a short wire or a paper clip shaped in a U.....touch one end to R while touching other end to G.

 

Tell me if fan inside kicks on.

 

 

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Customer reply replied 6 years ago
Ok, took off the top section and I see the R and G ones you mentioned. Do you want me to put the paper clips on the screws located under R and G or in the little wholes located under R and G. Just want make sure before I do it. I am also assuming we need the electricity to stay on correct?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

It can be done various ways...remove red and green wire and twist together...attach paper clip in terminals, just hold the jumper on manually...but yes...power must be on to furnace/blower.

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Customer reply replied 6 years ago
What is the jumper?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago
sorry...the "jumper" is the short wire or paper clip....it is referred to as jumping power from R to G.
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Customer reply replied 6 years ago
Ok, got it. :-) I removed the green and R and G wires, twisted them together and placed the paper clip in the terminals manually but the fan did not kick on.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Thank you.

 

Now hook eveything back up as normal at thermostat.

 

Now we have eliminated the thermostat itself as being defective.

 

I know you checked breakers for ac, but did you reset for air handler?

 

 

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Customer reply replied 6 years ago
I don't know how to reset for air handler. How do I do that?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago
In your breaker box (electrical panel) turn off the breakers to indoor air handler...(not outdoor ac )
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Customer reply replied 6 years ago
Done.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Thanks...now....does the drain (condensate drain) from the unit drain into a rectangle pump?

 

 

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Customer reply replied 6 years ago
I have a drain pipe that runs from underneath the home outside. Is this what you are referring too? If so, I used the wet/dry vac and cleared out this pipe this morning. Is there possibly another rectangle pump I may have missed?
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Maybe...

 

Go to the unit and see exactly where the drain line goes from the air handler. It could be a small transfer pump known as a condensate pump.

 

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HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Will be offline again for an hour or so.

 

Respond as soon as I can.

 

 

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Customer reply replied 6 years ago

Ok. Here is the answer to your question. There is a black rectangle box that is located on the top of the white pvc pipe that is directly beside the unit. It has wires running from it into the unit. Also from the inside unit there is a long white PVC pipe that runs from the unit and goes out the back of the home through the foundation. It has a little hook on it and this is what I vacuumed out this morning. I will talk to you again when you return. Thanks.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

Is the black box full of water?

 

 

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Customer reply replied 6 years ago

No.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Half full or empty?

 

 

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Customer reply replied 6 years ago

empty.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

How do feel about checking for power with a volt meter?

 

 

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Customer reply replied 6 years ago
It seems to have power because you can hear the sound. But none the less I do not have a volt meter unfortunately.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Do you mind taking the front door off?

 

 

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Customer reply replied 6 years ago

No, but the front door of what? The black rectangler box or the unit itself. I do not recall if there was such a thing but I can go back under the house and see if you tell me exactly what door I am to remove.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

The front door of the blower unit..

 

 

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Customer reply replied 6 years ago

After that then what should I do? Since I have to leave the computer and go under the house can you give me all the steps I need to do while I am under there before I go?

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

 

Find where the thermostat wires attach..

see if they are on a circuit board that has a small blade fuse like in a car.

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Customer reply replied 6 years ago
If it does what should I do next. I need all of the steps that I need to confirm or debunk while under the house. It is a small area and I want to look for everything that you need me to look for and test while under there. Day light right now is getting slim and my flash light is not the best.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

the fuse we hope is present will be a 5 amp blade fuse. If blown replace.

 

After that requires a meter so this will be the last thing I have you check.

 

Billy

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Customer reply replied 6 years ago
Ok, thanks Billy. I will check to see if there is a circuit board with the 5 amp blade fuse you mentioned. If that does not work, I guess I will have to get a professional to take a look at it. I know it is something simple, the unit is not that old. I thought there would be a simply reset button on the unit under the house but I guess that is not feasible. I hope it does have a circuit board but I am not optimistic that it did. I know exactly what you are talking about because I see that on the outside unit. Anyway, I thank you for your help today, I was hopeful that I would have my issue solved like everyone else mentioned in their feedback columns but things just don't go like that for me. I can't say it was not from a lack of trying. I appreciate it, have a good night. At least one of us will be cool.
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 6 years ago

I will leave this open for you for any follow up you may need. I also appreciate knowing what the final issue was.

 

Billy

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