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We have a goodman acnf301016da trying to replace a lennox…

We have a goodman...

We have a goodman acnf301016da trying to replace a lennox thermostat with a honeywell rth111 thermostat the lennox had a common 24v wire that the honeywell said to not use but the unit will not come on

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

The old thermostat lost power so it may be a bad 24v power supply

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

Yes i had my daughter install the new thermostat but it did not work can we jump the red and yellow wires to test and see if the unit starts without the thermostat

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Answered in 4 minutes by:
5/3/2018
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 937
Experience: Owner at Gaztech
Verified

Hi I am Gaztech1, a independent technician, I will assist you with your issue.

Don't forget to rate the 5 star rating AT THE TOP OF PAGE when we are done. this will credit me for assisting you.

You can jump G and R that will just start the indoor blower if your furnace still has power

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Customer reply replied 3 months ago
nothing happened. about 6 months ago i had to replace the blower motor capacitor it had gone out

OK I am just checking wiring diagram to guide you..

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Manual, check page 31, does not show that it has a fuse it unit, so check to see if furnace has 240Vac and then check transorfer output for 24 Vac

https://www.alpinehomeair.com/related/RT6121000R19%2011.2012.pdf

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Customer reply replied 3 months ago
ok but will have to wait until this weekend its at my daughters house 90 miles from me right now

Bring volt meter and a universal transformer 240 v to 24v

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OK....

Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 937
Experience: Owner at Gaztech
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