Harman® • P42i Owner’s Manual • 2023 -___ • 03/23
12
8742-900A
B. Quick Reference Maintenance Chart
Frequency
Cleaning Procedure
Safety Measures
Tips
Daily
Scrape Burn pot
Wear flame resistant gloves
3
Vigorous, strong scraping specifically
near neck of burn pot. Scrape every
time you add pellets or at least every
3 bags of fuel.
2
Weekly
Empty Ash Pan
Wear protective gloves.
1
Put ashes into a steel non-
combustible container with tight
fitting lid outside.
Unit does not need to be turned off.
Reduce to low burn during removal.
Clean the Glass
Stove must be turned off and cold.
Monthly
Scrape & Vacuum Heat Exchanger
Stove must be turned off and cold.
Use provided scraper. Scrape back
and sides of firebox.
Brush & vacuum the distribution fan
Stove must be turned off, cold and
unplugged from power supply.
Use provided paint brush. This
should be done approximately every
25 bags.
2
Inspect Hopper lid gasket for
damage
Replace gasketing if frays, tears or
other visible damage to gasket. This
should be done approximately every
50 bags.
2
Clean Igniter
Stove must be turned off, cold and
unplugged from power supply.
Wear protective gloves.
1
Put ashes into a steel non-
combustible container with tight
fitting lid outside.
Use provided paint brush. Vacuum
loose ash from around igniter and
inside burn pot.
Stove MUST be turned off, cold and unplugged from power supply for Yearly Cleaning.
Yearly
4
Brush & vacuum the combustion fan
and venting/exhaust path
Wear protective gloves.
1
Put ashes into a steel non-
combustible container with tight
fitting lid outside.
Use provided paint brush to brush
fan blades. *Use flue brush to clean
venting being careful not to damage
the ESP.
2
Inspect door gasket
Replace gasketing if frays, tears or
other visible damage to gasket.
Brush & vacuum venting system
Wear protective gloves.
1
Put ashes into a steel non-
combustible container with tight
fitting lid outside.
* A flue brush of appropriate size and length may need to be purchased for proper maintenance.
1. Protective gloves will help prevent skin abrasion while working on steel surfaces.
2. Frequency of cleaning depends largely on fuel type. Lower quality pellets require most frequent cleaning.
3. Flame resistant gloves will help protect your skin from potential contact with heat or flames.
4. Yearly cleaning is also known as a Total Clean. This requires completing all the Daily, Weekly, Monthly and Yearly
maintenance mentioned. This should be done before you begin burning the unit each heating season.
