M55 Enviro Daughter and MB?

[moving2fla]

After the power button broke, I replaced the MB and daughter board on my 2006 Enviro M55 insert.

The unit now powers on/off and runs for about 12 hours before shutting down #4. Any thoughts?

Off/on and flame (1-5) work, all other options on new daughter board just throw 5-light error.
Should any other features/controls besides work on the new board?

 

[johneh]

When was the last time your stove had a full cleaning air intake to exhaust termination?
Light # 4 on the Heat output bar flashing.• The hopper is open, or the hopper switch has failed.• Reset the sensor and determine the cause. Was it a convection blower failure or a circuit board control problem?• The 200 °F (93 °C) high limit temperature sensor has tripped
Did the stove overheat?

 

[moving2fla]

I did it last year, probably used 10 times since then. Surprisingly the high temp switch was not tripped (used to trip often).

 

[johneh]

Have you ever adjusted the Auger cover/
What is your stove running manual, hi/low or auto?
After a failure if you start the stove does it fire up normally?
make sure that the hopper lid seal is clean

 

[moving2fla]

No, I don't even know where the auger cover is but the damper was only open about 1/2 inch. The burn pot was probably 1/6 full of old ash when stopped. It was running hi/low.
Starts fine.

 

[johneh]

The most likely cause if it did not over heat is the hopper switch.
It sences that the lid is not fully closed . right now all I can say
is run the stove and see if it happen again

 

[moving2fla]

Thank you!

 

[AZ Pellet Heat]

After the power button broke, I replaced the MB and daughter board on my 2006 Enviro M55 insert.

The unit now powers on/off and runs for about 12 hours before shutting down #4. Any thoughts?

Off/on and flame (1-5) work, all other options on new daughter board just throw 5-light error.
Should any other features/controls besides work on the new board?

I agree with Johneh that the likely cause of your flashing #4 error is the hopper lid switch. It may need to be adjusted so it's slightly closer to the lid.

Also, if you have soldering skills, you can replace the on/off button yourself which costs pennies as opposed to replacing circuit boards which cost hundreds. I have a short tutorial with photos starting in post #12 of the thread linked here. My stove is the M55 cast free standing, but the procedure should be similar for your insert:

Thread 'M55 Cast daughter card'

Mar 12, 2015

Hi all,

Had a great season with my M55. Unfortunately it seems that someone pushed a little too hard this morning on the daughter card and now the power button does not work. I put a meter on it and there is no continuity when depressing the button. The other buttons for the speed are OK.

I got the stove started tonight by shorting across the leads of the power button. Tomorrow I'm going to unsolder the #5 button and switch it out for the power button. This should get me through the season as I've never used #5 and don't expect that I would now that it's getting warmer.

I looked...

• dana.r
• Replies: 16
• Forum: The Pellet Mill - Pellet and Multifuel Stoves

Regards,
Marc