main igntion failure

  1. gatorson

    Raypak 406a Main Ignition Failure Heater keeps cycling

    Hello everyone, I have a natural gas 406a Raypak/Rheem heater continuously cycling after starting up. The first time the heater sparks and calls for heat the heater will stay lit for sometimes a couple minutes. After this time period the burners will go out, but the pilot will stay lit...