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Buderus 6A
Mpj
Member Posts: 109
Hello All,
I have a GB that I looked at before Christmas it was giving a 6A code, the flame sensor was changed before I got there so I do not think that is the problem. I cleaned and serviced the boiler (it has not been serviced in a couple of years) still had the same problem. Checked everything in the manual and found nothing wrong. Called Buderus and spoke to a tech, he walked me through other tests. Found it to be the 24 volt transformer, changed the trans and all seemed good. Got a call tonight the 6A is back. Does anyone have the procedure to check the transformer? I'm thinking the new went bad.
I have a GB that I looked at before Christmas it was giving a 6A code, the flame sensor was changed before I got there so I do not think that is the problem. I cleaned and serviced the boiler (it has not been serviced in a couple of years) still had the same problem. Checked everything in the manual and found nothing wrong. Called Buderus and spoke to a tech, he walked me through other tests. Found it to be the 24 volt transformer, changed the trans and all seemed good. Got a call tonight the 6A is back. Does anyone have the procedure to check the transformer? I'm thinking the new went bad.
0
Comments
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Transformer
It sounds like you might have an intermittent short somewhere, it could be a wire or any coil that runs off the 24v.
If you can get to the transformer output leads (impossible if it's mounded on a printed circuit card) use a clip on amp meter to measure the current, compare that to the transformer rating. You could also put a fuse on the output of the transformer (fuses are cheaper than transformers).
BobSmith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
Vaporstat with a 12oz cut-out and 4oz cut-in
3PSI gauge0 -
Ignition Issue?
Have you checked everything on the fuel and vent side? What's your incoming gas pressure? Is the condensate trap draining?
The transformer diagnosis seems a litte stretched to me. Was the old one producing 24 volts?Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
6A
Bob, I'm going to the job tomorrow AM, I do not understand what you mean by installing a fuse. What is the purpose of the fuse?
Iron, The incoming gas pressure is 7.7"WC, set the gas/ratio to -0.03. The old transformer was reading about 19 volts.0 -
6A
Went back to the job today. It turned out to be the UBA. replaced it and all is well again.
Thanks for all your help.0
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