Trane PCB TNS 5 AMP fuse

[surface]

On two occasions, I have replaced a 5 amp fuse that links the 230 volt/24 volt transformer to the Printed Circuit board on my Trane household unit.

My service rep says I need to check for voltage coming into the unit/house, which I have done and measured 260 volts.

Our local energy supplier doesn't seem to think that the voltage being served is the problem.....

what do you think?

[smokin68]

I think you need to make a service call........it has nothing to do with the 260v going to your house. We're not allowed to give DIY advice due to the rules here....but it shouldn't be a hard problem to correct. Good luck.

[surface]

I didn't think my service guy was correct either.

[pecmsg]

Try a different service guy !

[hvac_superman]

The equipment is good for 10% over nameplate value listed. 230+10%=253 What doe's it say on the nameplate.

[surface]

240 volts on the name plate........263 at the power breaker:)

[hvac_superman]

Voltage is acceptable then. Its right at the border line but it is acceptable. Has to be another issue.

[wuffdog]

It is apparent your service tech dosen't have a clue. Get another one. There is a problem on the low voltage side of the operating system. should be easy to find if you know what your doing.