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L8148a aqua stat trouble

ultra25
ultra25 Member Posts: 3
in THE MAIN WALL
I have that Honeywell aquastat and my boiler will not turn on I have no power at b1 or b2! What could be wrong? The circulating pump works though! Thank you!

Comments

  • Paul48
    Paul48 Member Posts: 4,469
    Check for power at one side, then the other of the high limit and report back.
  • ultra25
    ultra25 Member Posts: 3
    I checked both sides of the high low switch no power on eaither side!
  • Paul48
    Paul48 Member Posts: 4,469
    The only thing else in the circuit is the relay.
  • ultra25
    ultra25 Member Posts: 3
    So I have to buy a whole aquastat or can I buy the high limit switch
  • Paul48
    Paul48 Member Posts: 4,469
    Not the hi-limit, the relay or connection at the relay. Pull up the instructions for that aquastat. It shows the schematic. I might be tempted to pop the board out and check the connections. If you do that, make sure you shut the power off.

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