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Honeywell R7284B No power after power outage

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700635rhs
700635rhs Member Posts: 1
in Oil Heating
Hello I have an oil burner that has no power to the controller. It will run if I jump the l1 to the b1.
it did this in the beginning of the season but just started working randomly. Any ideas?

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  • HVACNUT
    HVACNUT Member Posts: 5,843
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    So you have L1 constant power, and Limit, coming from B1 in the aquastat. 
    Anything in the primary diagnostics memory?
    Do you have an electrical meter? Is there 120 volts across B1 and B2 in the aquastat?
    What make and model aquastat?
  • 109A_5
    109A_5 Member Posts: 1,385
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    Hello @700635rhs,
    If you have this type of Aquastat, It would not surprise me if the solder joints that connect the relay to the circuit board are failing.



    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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