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Baxi Luna3 310fi throwing error 03

Tech recently Replaced pressure switch but error continued every month or so. Flue isn't blocked . Have 120 volts at fan during pre start up. Can not re create error . I put it in high and low fire to try and make it trip. Vent is properly pitched away from house. No signs of condensation in pressure switch tube. Any suggestions?

Comments

  • UnekoneUnekone Posts: 4
    I'm a gas and oil tech

    So you know I am a licensed gas tech in Maine. I just don't want to sell the homeowner parts that are not needed
  • Thermostat sensor

    Did you check the ohms on the flue thermostat sensor to see if its outta wack?  Also depending on your installation is the restrictor in the intake?  Does it need to be in there?
    Aaron Hamilton Heating
    ahheating@ yahoo.com
    (207)229-7717
  • UnekoneUnekone Posts: 4
    vent

    No restrictor in ,its a concentric vent. Also customer says it will go months with out having a error . I will ohm sensor on way back there shortly
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