Trouble Shooting - Harman XXV Installation & Operating Manual

Feeder dOeS nOt Feed
1. No pellets in hopper.
. Firebox draft may be too low for low draft pressure
switch in feeder circuit to operate. check for closed
doors, loose or missing gasket on doors or hopper lid,
or a faulty pressure switch.
. Feed motor will not run until the ESP senses 165 deg.
F. Maybe you did not put enough pellets in the burn pot
before lighting the fire manually.
4. Something is restricting flow in the hopper or causing
the slide plate to stick.
5. Feed motor has failed.
PartiallY burned PelletS
1. Feed rate too high.
. Draft too low. (Check burn pot clean-out slide and
door gasket).
. Burn pot or heat exchanger may need to be
cleaned.
4. Combination of all the above.
5. #6 status blink: A 6 blink control board status indica-
tion is caused by poor or incomplete combustion. The
Automatic Ignition circuit board has the ability to track
the combustion through feed settings and ESP tempera-
tures. When the control board has calculated poor or
incomplete combustion, it will shut down the unit as a
safety feature. (Poor or incomplete combustion is a con-
tributer of creosote which may cause a chimney fire)
A 6 blink status may be caused by several things:
1. Blocked or partially blocked flue.
. Blocked or partially blocked inlet air.
a. Backdraft damper on the inlet pipe may be stuck
closed.
b. If outside air is installed, the inlet cover may be
blocked.
3. The air chamber under the burnpot may be filled with
fines and small bits of ash.
4. The holes in the burnpot may be getting filled with
ash or carbon buildup.
5. Combustion blower fan blades may need to be
cleaned.
6. Broken or blocked muffler fitting, in hopper.
7. There is no fuel in the hopper.
SMOke SMell
Seal the vent pipe joints and connection to stove with
silicone.
Fire haS gOne Out
1. No pellets in hopper.
. Draft setting is too low.
3. Something is restricting fuel flow.
4. Feed motor or combustion blower has failed.
5. Power failure or blown fuse.
SMOke iS ViSible cOMing Out OF Vent
1. Air-fuel ratio is too rich.
A. Feed rate too high.
B. Draft too low caused by a gasket leak.
7
XXV Pellet Stove
trouble-Shooting
lOw heat OutPut
1. Feed rate too low
. Draft too low because of gasket leak.
. Poor quality or damp pellets
4. Combination of 1 and .
cleaning burn Pot
Whenever your stove is not burning, take the oppor-
tunity to scrape the burn pot to remove carbon buildup.
A vacuum cleaner is handy to remove the residue. be
sure the stove is cold if you use a vacuum.
Carbon buildup can be scraped loose with the fire
burning using the special tool provided with your stove.
Scrape the floor and sides of the burn pot. The carbon
will be pushed out by the incoming fuel. Always wear
gloves to do this.
removing ashes
Turn the Temp Dial to number 1 approximately 0
minutes before removing ashes. This will result in a
cooler stove and ash pan.
Maximum Feed Adjuster settings are not needed in
most cases. Operating in the normal range (#4) is recom-
mended when maximum heat output is not required. The
ESP probe prevents the stove from being over-fired.
Keep the stove free of dust and dirt.
Wood Pellet size is regulated at ." to .5" in diam-
eter with a maximum length of 1.5" long.
Pellet fuels are put into  categories in terms of ash
content. Premium at 1% or less, Standard at % or less
and all others at % or more.
The XXV is capable of burning all  categories of pel-
lets due to a patented feeder and burn pot system.
It should be noted, however, that higher ash content
will require more frequent ash removal, scraping of the
burn pot, increased cleaning frequency and may provide
less BTU's per pound. Normally, standard and high ash
pellets cost less than premium pellets and can be cost
effective when burned in the XXV.
The moisture content must not exceed 8%. Higher
moisture will rob BTU's and may not burn properly.
Pellet fuel should not be stored within the stove
installation clearances or within the space required for
charging and ash removal. See Page 5.
helpful hints
Fuel