Quadra-Fire Mt Vernon AE Service & Troubleshooting Support

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Robert Writes In: 

I’m having some issues with the thermostat which goes back to the “wake up screen” or other error messages. If I unplug the stove it seems to solve it. Just wondering if this is a common issue and whether there is an updated model or something else going on with the stove?

Mr. Pellethead Replies: 

The issue here is likely as simple as the thermostat wire connections.  Three wire system, Red and Green are for power and White is for communication between the wall control and main board.  Dashes in the upper left screen would indicate problems with the white wire connections.  Cycling the wakeup screen is a loose connection of the red or green or both wires.  The interruption could be the crimped connectors at the stove terminal block or the connections inside the wall control.  Could also be a pinch of the t-stat wire between the wall control and the stove.

  • Standish says:

    Hi,
    I have a Quadra-Fire Mt. Vernon AE that is about 9 years old. With increasing frequency the stove is failing to start at pre-programmed times. The wall display shows ——— Often I can get the stove to start by going to the comfort setting, adjusting the temperature to what is set for and to select “Hold” . Then the stove usually goes to start-up after 10 seconds or so.
    I have cleaned the wires and know the wires are in good shape. A troubleshooting PDF says it is either a failing wall controller or the control board. Does this sound right and if so how can I tell which it is without playing expensive trial and error?

    Thanks!

    • pellethead_admin says:

      Thanks for contacting us. Ran this past our lead Mt Vernon AE Technicians. Notes:
      If I’m understanding the email correctly he is experiencing the dash lines at the top left of the wall control. If this is the case it would indicate a communication interruption between the wall control and the board. When you see this the control board will follow the last command from the wall control. It also sounds as though this is an intermittent problem that seems to remedy itself while handling the wall control. There are several connection points throughout the communication circuit, including any point in the wire, that have the potential to become faulty. In this case it appears to be in the wall control so if the wire connection (white wire) is tight the other issue inside the wall control that will typically go bad is the three prong plug connection between the two halves.
      I would suggest to continue trying to isolate the connection problem in the wall control by clearing the dashes with wiggling the wires or squeezing the two halves tighter together.

      Keep us posted, happy to help!

      • Standish says:

        Hello,
        Thanks for all the information. I took the face of the wall control off, cleaned it up a bit inside and reattached it. So far so good; although I imagine a true solution will require more work on my part. Thanks for giving me a place to concentrate my efforts!

        • pellethead_admin says:

          Great to hear, and happy to help. Keep us posted and you have any other questions just let us know.

          Thanks!

  • Melinda Thompson says:

    I have a Quadra Fire Mt Vernon pellet stove….it has dotted line on the thermostat so we tried to figure out what the issue is because our pellet won’t start…

  • Nick D says:

    I have a mt Vernon Quadra fire that will burn through multiple cycles and then the thermostat will be in the off position. I have to reprogram to auto on and what type of fuel I am burning. Also resets all programmed settings. Any idea what could be causing this ?

    • pellethead_admin says:

      Hey Nick, Just ran this past our tech team – “I am leaning towards this being a faulty wall control unit. The wall unit will hold power for memory for a decent amount of time so the resetting part would not be happening. If it was a communication issue the board it would most likely be freezing up and not functioning. Hard to say for sure but I am 75-80% leaning towards the wall unit.”

      Do you have a local dealer near you where the wall control could be tested? If not, we do offer a testing service. If needed, you can reach us at 800-236-6647. Thanks!

  • John Damjanovich says:

    Have a MT Vernon Quadra Fire AE. About 10 years old. Changed the igniter which I have done many times. It ran fine for 2 days but stopped today. I pulled out the igniter and it had a small burn hole at the base by the wing nut. Replaced again but nothing happening. Checked the second igniter and getting about 47 ohms so seems all good. I then checked the voltage at the igniter connectors and getting almost nothing ~ 1 volt. I have not gone any further but thinking a blown igniter fuse in control board? Bad board? Incidentally I think the igniter I first replaced might still be ok? I checked with ohmmeter and getting 48 ohms which is in range. Anyway, thoughts on next steps?

    • pellethead_admin says:

      Thanks for contacting us John. You’re on the right track. We would suggest checking the igniter fuse on the board and check the motherboard for any damage in the corner the igniter plugs into. The igniters are within range and with there not being power present that would be the next logical step. Keep us posted, happy to assist.

      • John Damjanovich says:

        The board and plugs look good with no visible damage. The 15 amp fuse is toast. None available at the hardware store so have on order… Should be good when I replace. Thanks for the help.

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