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Tekmar 371

dbefus
dbefus Member Posts: 2
in Radiant Heating
My tekmar 371 died. We had several power outages. I have checked the fuse on the circuit board and it is good. Any Suggestions?

Comments

  • dbefus
    dbefus Member Posts: 2
    I should add...

    Yes the power is on.
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,858
    Put your nose right next to the control.....

    and take a whiff. Does it smell of acrid smoke? If yes, it's fried.



    Solid state electronics do not like surges, man made or otherwise. I've seen holes the size of a silver dollar burnt through boards on tekmar before.



    Sorry I don't have better news for you. There are no internal fuses or circuit breakers.



    ME

    There was an error rendering this rich post.

  • Jean-David Beyer
    Jean-David Beyer Member Posts: 2,666
    Surges, fuses, and solid state electronics.

    When I used to design electronic equipment, we had a saying: the transistor acts to protect the fuse. This was because a transistor can be fried by a one microsecond surge, while a fuse tends to take much much longer to blow. A fuse can perhaps protect against long-term overloads, and is a good safety measure for a system to protect the building it is in, but it will almost never protect the electronic equipment itself. For that you need good wiring and a suitable surge protector.
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