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Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have a trane furnace about twenty five years old. Suddenly

Customer Question

I have a trane furnace about twenty five years old. Suddenly it will not come on not even the fan. I check the thermostat. I open it and check for a fuse on the board but it has no fuse on the board.
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.

hello,

can you tell if any power is actually going to the furnace? Do you have an electrical tester?

Billy

Customer: replied 1 year ago.
I did not bring my tester with me and the breakers are not mark.
Expert:  BillyHvac replied 1 year ago.

is it heat only or also has ac?

Customer: replied 1 year ago.
However, I did check all of the breakers and all seems to work fine. There is no wall switch for this unit. It's a heat pump
Customer: replied 1 year ago.
It does have air and heat electric
Expert:  BillyHvac replied 1 year ago.

Remove thermostat top section..locate wire on R and wire on G..twist them together and tell me if blower starts

Customer: replied 1 year ago.
OK, I will do this on Saturday, I will tell on tomm
Expert:  BillyHvac replied 1 year ago.

Just keep this on your end until tomorrow. Talk then

Customer: replied 1 year ago.
OK, thank you.
Expert:  BillyHvac replied 1 year ago.

please do not reply until you are ready to proceed. If you reply the system forces a response from me.

Thank you

Billy

Customer: replied 1 year ago.
Hello Billy, this William, I crossed R and G at the thermostat, but nothing happen.
Customer: replied 1 year ago.
Hello Billy
Customer: replied 1 year ago.
Hello Billy, still waiting for your response
Customer: replied 1 year ago.
Hello is anyone there?
Customer: replied 1 year ago.
Hello Billy. This is William
Expert:  BillyHvac replied 1 year ago.

if r and g did not turn on fan we need to see if the furnace has power.

Any lights or hums, clicks etc?

Customer: replied 1 year ago.
Hello Billy. I have been trying to reach you for a while.
Customer: replied 1 year ago.
I don't understand. I have not got a response from you
Customer: replied 1 year ago.
Hello Billy, the furnace is humming which it did not do on yesterday
Expert:  Daniel Plourde replied 1 year ago.

hi I am dan, I can try to help you with this, the air handler is humming and you connect R to G and nothing happens?

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