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  • Error 5.4 no gas

    Posted by ryan1 on May 31, 2023 at 12:53 pm

    I work on a convotherm 6.20. suddenly I have an error code saying 5.4 no gas. the gas is on the lighting mechanism is glowing hot but it does not lite. It did this before and i swapped the hole blower/burner. by taking it ffrom another we had. It worked for 5 months nnow this one is saying the same thing . It has gas no clogs. Has anyone else had this problem or k ow wete to I could begin to fix it ?

    fixbear replied 4 months ago 3 Members · 2 Replies
  • 2 Replies
  • Darkbrew

    May 31, 2023 at 10:41 pm

    If you know you have gas, & the pressure is good, you may have a bad ignitor. Even if it glows, it may not be hot enough. I think generally they pull 3-3.5 amps. But you’d have to verify that w Cleveland.

  • fixbear

    June 1, 2023 at 11:36 am

    HSI systems can be a bit tricky if they have glow sensing technology. As the igniter ages, the current drops. But they also drop current as they heat and get to temperature. As the HSI unit ages, it get’s out of spec. Make sure to use the manufacturer’s igniter. Different manufacturers use different safety systems with them. Look at the gas valve as well. If it is a double coil valve, you may have to replace the coils. Those type of controls also monitor the coil current to be correct. Also look for a IR senser.

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