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A-1 Tech
A-1 Tech, Service Manager
Category: HVAC
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Experience:  I have been in the HVAC business for over 40 years.
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The honeywell thermocouple in my home boiler fails after 6

Resolved Question:

The honeywell thermocouple in my home boiler fails after 6 to 12 months. The thermocouples used to last for 6+ years. In the last 4 years, I have had to replace the thermocouple 6 times. What can be causing the very limited life of the thermocouples? Is there some adjustment that should be done by a professional?
Submitted: 2 years ago.
Category: HVAC
Expert:  A-1 Tech replied 2 years ago.

A-1 Tech :

Hello, My name is XXXXX XXXXX I will assist you today

A-1 Tech :

I would bet they are not built where they used to be. We are getting parts now that used to be made in the USA (don't know where you are from ) then they were made in Mexico and now they are made in China. We go through the same thing with capacitors.

A-1 Tech :

You might check that the thermocouple is not getting too hot. That could be that it is in the main burner flame or the pilot too much. A simple adjustment like this may help

A-1 Tech :

Welcome

Customer:

What can I do to adjust the pilot light?

A-1 Tech :

there should be a pilot adjustment on the gas valve

A-1 Tech :

follow the 1/4" aluminum tube back from the pilot

A-1 Tech :

it may have a little cap over it that unscrews

A-1 Tech :

then you can get to the adjustment screw.

A-1 Tech :

are you near enough you can go look at it?

A-1 Tech :

I will wait

A-1 Tech :

You do not want the thermocouple getting flame from the main burner.

Customer:

no, I will have to look at it tonight.

A-1 Tech :

ok

A-1 Tech :

can I assist you further?

Customer:

no, thank you.

A-1 Tech :

Thank you,

A-1 Tech :

Ron

A-1 Tech :

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A-1 Tech, Service Manager
Category: HVAC
Satisfied Customers: 503
Experience: I have been in the HVAC business for over 40 years.
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