older 6039 issues - need help !

[TheRealPellet]

Hey Folks - Im a newbie here and have read alot of great articles !!

I have an older American Harvest 6039 Pellet stove in my garage I use when out in the man cave and tuning in toys, came with house and garage when i purchased house. Stove has been running great last 2 winters with only having to do a cleaning when needed. Couple weeks back fired it up and went into house while garage warmed up, went out a while later to smoke every where in garage.. after all cleared tried to fire back up and didnt seem to be running at full potential like it has been so looked at stove and some forums, noticed seal around window in door was leaking so replaced the seal and cleaned out fire box, still wasnt running properly or to the full potential of what me and my buddies are use to..

basically when you first start it flame is great, once she gets going ill put her to 9 - 9 ( like i always have from day one when she gets warmed up, and never had any issues at all ) and flame doesnt seem to be where she was at.. we would turn stove down to 4-4 and fire would go out so we messed with it a bit by adding in our own pellets in hopper and stove would be ok with normal size flames.. so decided to shut it off and clean EVERYTHING and found some spots ive never cleaned before ( behing fire box and to plates and it was nasty) cleaned and blew out pipes and all motors in back, re fired and did same thing, we would add pellets and seemed to be ok so started thinking auger motor kicked the pail, call AH and they said lack of pellets - auger motor is going bad.. well just put in the new motor last night fired it up and auger is deff running better and feeding more pellets then it was but still dont seem like it use to run earlier this yr or last winter.. stove will now stay running on 4 -4 but no matter if its on 4-4 or 9-9 the flames just dont seem to be at full potential still seems like weak flames ( flames barely taller then fire box itself) there is NO DRAFT lever below door either FYI.. This thing has me and my buddies baffled and banging are heads against the wall and i dont wanna keep throwing parts at it for no reason... Always have and been running NEW ENGLAND Hardwood pellets through cuz thats what i buy for my Harman inside the house...

Any thoughts or suggestions on what could be going on here ????

Many thanks in advance before i drag this stove down the street behind my truck !

 

[Owen1508]

May want to try cracking a window in Garage. If that seems to help it would be an air flow problem. Although since it ran well before it should run the same. These units tend to act funny sometimes after cleaning. If that works then try adding a fresh air pipe on the back (2" pipe out the back with the cap) you'll have to drill a few holes under the cap to get the air flowing. I put a valve on my fresh air pipe to regulate the flow, seemed to help me out. other then that my only other thought just now would be trying to run draft fan 1 or 2 higher then heat setting. You can use the "c" codes to increase the draft fan speed at each level also since you seem to run on 9-9 alot. here are the codes as I have them.


To adjust the operation constants, press and hold the mode and auger delay buttons simultaneously for 3 seconds.
The display will show "C-1". Use the Heat up or Heat down buttons to change the constant number. When the
desired constant is displayed, press the on button to toggle between viewing and editing the value. While
editing the parameter, use the AUX up and AUX down buttons to adjust the value to the desired point, then press
on again to return to the constant number list. Press the off button to exit the adjust operational constant mode.
C- 1 - Reset to defaults (hold Mode and Auger Delay buttons for 3 seconds to
reset all to defaults)
C- 2 - Fuel Lbs Per Hour HR 1 (0-20.00) - This is the fuel rate in pounds per hour
for a heat range setting of 1. The default is 5.00lbs.
C- 3 - Fuel Lbs Per Hour HR 9 (0-20.00) - This is the fuel rate in pounds per hour
for a heat range setting of 9. The default is 13.lbs. The fuel rates used between
settings 1 and 9 are linearly interpolated between these two settings.
C- 4 - Agitator On Percentage HR 1 (0-100) - This is the Percent On time for the
Agitator for a setting of 1. The default is 25%.
C- 5 - Agitator On Percentage HR 9 (0-100) - This is the Percent On time for the
Agitator for a setting of 9. The default is 50%. The percent on time for the
Agitator used between settings 1 and 9 are linearly interpolated between these two
settings.
C- 6 - Draft Fan Level HR 1 (0-500) - This is the Draft fan output level for a draft
fan setting of 1. The default is 150/500.
C- 7 - Draft Fan Level HR 9 (0-500) - This is the Draft fan output level for a draft
fan setting of 9. The default is 400/500.
C- 8 – Fuel Rate Type Compensation (50%-200%) – This parameter affects how
much the auger runs to produce a given fuel rate. The default fuel rates are based
on corn. This is the default setting for this parameter, or 100%. If the parameter
is adjusted up, the auger rate is increased proportionally. If the fuel being used is
less dense than corn (wood pellets for instance), it may be necessary to raise this
parameter to compensate. This makes the programmed lbs per hour correspond to
the particular fuel type. Typically, wood pellets need to be run at 120% to
compensate for their lower density and slower travel through the auger system.
C- 9 - Ramp Seconds for Increasing Level (0-300) - When the heat range setting
is adjusted, the control will ramp from the current setting to the target setting to
avoid abrupt changes in the outputs that could cause problems with the flame
quality. The Ramp Seconds value sets the amount of time to spend on each heat
range setting (1-9 pseudo ranges not 1-5 user ranges) as the current setting is
ramping toward the target. If the current setting is ramping down toward a lower
target, the ramp value is half this number. The default value is 120 seconds.
C-10 - Startup Minutes for Detecting Warm Furnace - (10-60) This is the amount
of time the control will wait for the furnace to reach the warm temperature (110
Degrees F) after the furnace has been started before shutting down and reporting
an Error condition Err3. The default is 30 minutes.
C-11 – Overtemp Setpoint - (0-700) This is the measured flue gas temperature
that will cause an overtemp condition. In this condition, the control will stop
augering fuel until the temperature returns to a safe operating point. The default
is 575 degrees F.
C-12 – Cutback Setpoint - (0-700) This is the measured flue gas temperature that
will cause a cutback condition. In this condition, the control will ramp the heat
range down based on the ramp seconds described above divided by 2 until the
temperature falls below the cutback setpoint. The default is 550 degrees F.
C-13 – Room Fan On Setpoint - (0-700) This is the temperature that the measured
flue gas can reach before a the flue controlled foom fan turns on. If the measured
temperature is higher than this setpoint, the control will turn on the flue controlled
room fan. This variable also serves to indicate to the control that the stove is
warm. If the measured temperature is higher than this setpoint, the stove is
considered warm and will not create an Er 3. Whether or not the stove is warm
also determines if the unit will recover from a power failure. If the stove is warm
when power is lost and cold when it returns, it will shutdown with an Er 4 error.
The default is 200 degrees F.
C-14 – Cold Stove Setpoint - (0-700) This variable is used to determine when the
furnace is cold and ready to be shut down. If during the shutdown sequence the
measured temperature is less than this value, the furnace will stop running the
fans to cool it off. The default is 120 degrees.
C-15 – Low Temp Vent Heatrange – (0-9) This variable is used to control the
vent controlled room fan. If the pseudo heat range (1-9) is greater than this
number, the vent controlled room fan will turn on. If the pseudo heat range is less
than this number, the vent controlled room fan will turn off. The default for this
parameter is 3.
C-16 – High Temp Vent Setpoint – (70-400) This variable is used to limit the
maximum vent temperature. If the measured vent temperature is greater than the
High Temp Vent Setpoint, the furnace will reduce the heat range by 1. If the vent
temperature falls below the setpoint – 5, the heat range will ramp back to normal.
The default for this setpoint is 225 degrees.
C-17 – Auger Period in Seconds – (5-20) This is the fixed auger period. The ontime
is calculated based on the setpoint fuel rate in lbs and the full on rate set in
C-18. The default is 10.00 Seconds.
C-18 – Full On Fuel Rate in Lbs/Hour – (7-40) This is the fuel rate that would be
delivered if the auger was turned 100% of the time. This definition is for corn
only (see proportional offset parameter CCool. The default value for this parameter
is 36 lbs of corn per hour.
C-19 – Ignore Sense Errors (0-1) When this parameter is set to 1, the sensor errors
including Interlock, and all fuse detection errors are disabled. The default is 0
(sense errors enabled).
C-20 – Ignore Vacuum Switch (0-1) When this parameter is set to 1, the vacuum
switch is ignored. The default is 0 (do not ignore the vacuum switch).
C-21 – Bump Rate in Lbs (0-0.5) When the furnace is in shutdown, this parameter
can be used to force a small amount of fuel to be pushed through the auger to
keep the fuel in the auger from getting hot. The default is 0lbs per hour.
C-22 – Purge Seconds (0-120) After shutdown, the auger can be run for a fixed
amount of time to dump any fuel that may have become hot in the auger. By
default, the auger will run in this purge mode for 30 seconds after shutting down.

Not all these codes work on all there models (I have 6041 which is very similar to yours) i found making small adjustments at a
time works best so not to over adjust. worst case you reset to defaults and start again. I've had to do that many times before.
It's all a learning process to me.
hope this helps Good Luck. PS I found that it doesn't draft well with high winds either so keep that in mind too.

 

[Lake Girl]

Did you get the copy of the manual for your stove from this thread?
https://www.hearth.com/talk/threads/us-stove-vacuum-problem.121368/#post-1637625

 

[TheRealPellet]

Owen - Appreciate the quick response ! This stove is not vented to the outside and still ran beautiful the last 2 winters. my garage isnt wasnt built the tightest and only about 80% is insulated ( reason why i run the 9-9 ) but i will be out there tn and will try what you have posted thanks !

Lake girl - I downloaded the manual from AH website some time back when i got the stove hooked up and running.. came across that link before but need to read more thoroughly... stupid question what exactly is OAK standing for on the link you have provided ? thanks

 

[Lake Girl]

Outside Air Kit aka Fresh Air Inlet

 

[TheRealPellet]

lol thanks lake girl.. as stated above the is no " OAK " setup on this unit, been running beautiful and strong from day one without an OAK haha..

 

[Owen1508]

Should think about venting it. that would help the burn A LOT.