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rinnai 38k vented heater “L” on display

garye5007
garye5007 Member Posts: 3
in Gas Heating

Picked up a Rinnai 38K vented heater,used,.hooked it up to gas to test it fires up ok.i set the temperature at 78° and it shows L on display. The manual states that it’s in low combustion mode (I think). It’s in a cold room. No error code. Can I get this thing to run in high combustion mode?

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Comments

  • Jamie Hall
    Jamie Hall Member Posts: 26,007

    Got the manual?

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • garye5007
    garye5007 Member Posts: 3

    yes, I have the manual . Says this.

    IMG_2622.jpeg
  • garye5007
    garye5007 Member Posts: 3

    also this… temp control logic?

    IMG_2623.jpeg
  • yellowdog
    yellowdog Member Posts: 265

    Does it show it after the setpoint temp goes away? How cold is the room you have it in?

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