Troubleshooting - Harman PC45 Installation & Operating Manual

FEEdEr dOES NOT FEEd
1. No fuel in hopper.
2. 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, faulty
pressure switch.
3. Feed motor will not run until ESP senses 200
you did not put enough fuel in the burn pot before lighting
the fire.
4. Something is restricting flow in the hopper or causing the
slide plate to stick.
5. Feed motor has failed.
PArTIAllY burNEd FuEl
1. Feed rate too high.
2. Draft too low.
3. Burn pot may need to be cleaned.
4. Combination of all the above.
5. #6 status blink: A 6 blink control board status indication
is caused by poor or incomplete combustion. The circuit
board has the ability to track the combustion through feed
settings and ESP temperatures. 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 contributor of creosote which may cause
a chimney fire)
A 6 blink status may be caused by several things:
1. Blocked or partially blocked flue.
2. Blocked or partially blocked inlet air.
a. backdraft damper on the inlet pipe may be stuck closed.
b. If outside air is installed the Termination Cap 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 cleaned.
6. There is no fuel in the hopper.
COmbuSTION blOwEr ruNS AFTEr ShuT dOwN
This is a normal function. The combustion blower will run
for 5 hours after the stove is completely cool.
SmOKE SmEll
Seal the vent pipe joints and connection to stove with
silicone.
FIrE hAS gONE OuT
1. No fuel in hopper.
2. Draft setting is too low.
3. Something is restricting fuel flow.
4. Feed motor or draft motor 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.
2. Unit is in an ignition cycle.
3-90-02686R29_05/14

Troubleshooting

lOw hEAT OuTPuT
1. Feed rate too low
2. Temperature setting too low (Stove Temp Mode)
3. Draft too low because of gasket leak.
4. Poor quality or high moisture fuel.
F. Maybe
°
Cleaning burn Pot
Whenever your stove is not burning, take the opportunity 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
sides of the burnpot (corn grate), and the floor and sides
(pellet grate). 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 30 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 (#2 corn) (#4 pellet) is
recommended when maximum heat output is not required.
The ESP prevents the stove from being over-fired.
Keep the stove free of dust and dirt.
The PC 45 can burn corn with moisture levels up to 16%,
with 14.5% or less being ideal.
Pellet fuels are put into 3 categories in terms of ash content.
Premium at 1% or less, Standard at 3% or less and all others
at 3% or more.
The PC 45 is capable of burning all 3 categories of pellets
due to a patented feeder and burn pot system.
It should be noted, however, that higher ash content will
require more frequent ash removal 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 PC 45.
The moisture content of pellets must not exceed 8%. Higher
moisture will rob BTU's and may not burn properly.
The PC45 is capable of burning grains other than corn, such
as wheat, oats or barley. Grains vary widely from area to area,
as will stove performance. When burning grains other than
corn, it may be necessary to make changes to the settings
on the circuit board for optimum performance. Contact your
Harman Dealer for instructions.
helpful hints
Fuel
PC 45 Corn/Pellet Stove 24