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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22541
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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I have an excelsior plus package unit. I am not getting

Customer Question

I have an excelsior plus package unit. I am not getting power to the thermostat. I looked for a fuse on the circuit board and did not recognize one. Any help would be appreciated.
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.


the fuse is like a car fuse...blade type. On this board I believe it is yellow

If you want to post a picture of your board I can direct

Customer: replied 1 year ago.
Please find the attached pic
Expert:  BillyHvac replied 1 year ago.

thank you, ***** ***** to be an older version...can you please pan out with pic where I can see all components?

Customer: replied 1 year ago.
The other components are in the way. I will give it a shot Here is an angle from earlier. Im going back now.
Expert:  BillyHvac replied 1 year ago.

ok the big cube that sits in front of board..(transformer) that is what gets fried if the fuse is not there....we want to see if there is an inline fuse in one of the wires from that cube....or we need a meter to see if that cube is putting out 24v (which powers thermostat)

Customer: replied 1 year ago.
Its raining now. I will check it tomorrow. No fuse in line at all.
Customer: replied 1 year ago.
Two more pics.
Expert:  BillyHvac replied 1 year ago.

I checked the board number and you have no fuse. If the thermostat is dead then the the unit either has no power or the transformer is dead

Customer: replied 1 year ago.
Im going to buy a breaker and a transformer. Billy I want to thank you for your help!
Expert:  BillyHvac replied 1 year ago.

you are very welcome and thank you for the pics.

I wish you the best