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My question is regarding a thermostat replacement. New

Customer Question
Good Morning Contractor's Assistant:...

Good Morning

Contractor's Assistant: Hi. How can I help?

My question is regarding a thermostat replacement

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

No

Contractor's Assistant: Do you plan on doing the work yourself?

New Lennox EL296 furnace

Contractor's Assistant: Anything else we should know to help you best?

That came wired to a Honeywell basic thermostat

Submitted: 3 months ago.Category: HVAC
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Answered in 4 minutes by:
3/13/2018
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,219
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your

issue. First I’ll need some more info so I have a more complete picture of your situation.

What is your question?

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Customer reply replied 3 months ago
It's dome just having a problem with operation
Customer reply replied 3 months ago
It's dome just having a problem with operation
Blower fan will not turn off when thermostat is satisfied?
Customer reply replied 3 months ago
It's done just having a problem with operation
Blower fan will not turn off when thermostat is satisfied?
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

Is the fan switch on the thermostat set to AUTO?

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Customer reply replied 3 months ago
in auto in two different fields that I found I'm programming
Customer reply replied 3 months ago
in auto in two different fields that I found in programming
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

Ok, there is a blower off time delay. How long does the blower run after the burner shuts down?

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Customer reply replied 3 months ago
I have tried the 30 seconds mode and it did not work so I went back to 0 second delay
Customer reply replied 3 months ago
I have tried the 30 seconds mode and it did not work so I went back to 0 second delay
I would like to make sure the three dip switch settings are correct and wiring is correct? Can you help with that?
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

You didn't answer my question. How long does the blower run after the burner shuts off? There is no 0 or 30 second heating off delay. 60 seconds is the shortest. That would be switch 3 ON and switch 4 OFF

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Customer reply replied 3 months ago
It is not turning off at all
Burner and fan keep going
Customer reply replied 3 months ago
My unit only has three dip switches
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

You likely have a short in the thermostat wiring. A bad thermostat is also a possibility but not likely. You can verify this by disconnecting the R or W lead on the thermostat or removing the thermostat from the back plate.

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Customer reply replied 3 months ago
My unit only has three dip switches
Gas/EL or GO
O or B
Gas. Or Electric
Customer reply replied 3 months ago
My unit only has three dip switches
Gas/EL or HP
O or B
Gas. Or Electric
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

If this was just a blower issue the burner would not run after the thermostat was satisfied. I'm talking about dip switches on the furnace not the thermostat. Thermostat dip switch should be set to Gas or electric.

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Customer reply replied 3 months ago
Ok
Tested pulling red wire which kills everything because you have no 24 volts
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

That's the point. If here was a short the burner would still run. What's your thermostat dip switch setting?

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Customer reply replied 3 months ago
On furnace or thermostat?
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

Thermostat

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Customer reply replied 3 months ago
I do not see many dip switches on furnace
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

Thermostat dip switch setting

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Customer reply replied 3 months ago
HP
B
Gas
Customer reply replied 3 months ago
HP
B
Gas
I have a heap pump with L.P. backup and a signal stage air conditioner
HVAC Technician: Rick, HVAC Supervisor replied 3 months ago

I'm going to open this up to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.

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HVAC Technician: airheatman, HVAC Technician replied 3 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,081
Experience: Furnace, A/C and heat pump specialist.
Verified

Lets start from the beginning. Give me model on thermostat, furnace and outdoor unit

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Customer reply replied 3 months ago
Furnace is a Lennox EL296
Upgraded to a Johnson Controls T9100 color WiFi thermostat
Existing Carrier heat pump air conditioner.
Blower and heat was not turning off with temp went above set point
Removing white wire from thermostat seemed to make it return to normal operation?
HVAC Technician: airheatman, HVAC Technician replied 3 months ago

Model on outdoor?

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Customer reply replied 3 months ago
Don't know doesn't matter
It all worked with the standard Honeywell thermostat
Customer reply replied 3 months ago
8 wires all being used except the orange wire?
HVAC Technician: airheatman, HVAC Technician replied 3 months ago

Matters to me.Not going to guess without having the specifics.I will open to other experts who may be willing to do so.I have opted out of the question to see if perhaps other experts may have more information and can assist.Please do not rate or reply as that will send question back to my desk and delay getting assistance..Please stand by to see if another expert can assist further.

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Customer reply replied 3 months ago
Carrier model 38yxa042030
Serial. 2603E0292
Customer reply replied 3 months ago
Where should the white wire be connected on the JC T91000 thermostat and
What should the three dip switch settings be?
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