June 26, 2014
Venting the pellet stove. pellet vent must maintain a minimum 3' clearance to any combustible (install vent at clearances specified by the vent manufacturer). do not connect the pellet vent to a vent serving any other appliance or stove. do not install a flue damper in the exhaust venting system of this unit. The new AVR control board is the next generation control board that is compatible with all pellet stoves and inserts, large and small manufactured from 1997 to today. Circuitry on the board allows it to be programmed for either the large or small pellet heaters (these heaters use different voltage settings). See ““ for details. To burn efficiently, a pellet stove needs the right combination of fuel and air. The amount of fuel is adjusted using the temperature controls, and the amount of air is adjusted by the damper. The Avalon Astoria is a high heat output bay window stove producing over 45,000 btu.' It has a large hopper capacity of 115 lbs. Enabling a maximum burn time of sixty seven hours without refilling. This pellet stove and fireplace insert is approved to burn a fifty percent corn/pellet mix. If your pellet stove is experiencing combustion issues, due either to lack of maintenance or other internal issues, it may shut down on its own. This is a built-in safety precaution on many units, so be sure to keep an eye out for this during Harman pellet stove troubleshooting.
Normal Pellet Stove Operating Sounds VS Sounds That Indicate Faulty Components
As a pellet stove professional, I've found that identifying the sounds a stove makes or doesn't make is essential when diagnosing and fixing it. I always start by determining whether the sound in question is a normal operating sound. If you are the landlord or you are not the person who usually operates the stove, consult with the stove's user since that person will be most familiar with the stove's typical sounds. I have included a chart below that compares normal sounds to problematic ones. I'm going to share some tips on how to identify those sounds based on my experiences.
The other day, one of my customers said there was a strange squealing sound coming from the pellet stove while it was running. He asked me what it might be. After a thorough cleaning we restarted the stove and it made that sound again. The squealing happened intermittently, repeating every few seconds. Since the sound was repetitive and located in the center of the stove, I could identify the auger was making that sound. It squealed during a small part of it's 360 degree rotation. I gave the auger a complete servicing, which remedied the issue.
Listening to the sounds your stove makes can resolve many other issues. Doing so may help identify whether the exhaust or convection blower has gone bad. Another customer told me that the pellet stove sounded like a jet plane after it warmed up. Instantly, I knew the convection blower was the issue since it is the only part that starts running after the stove heats up. The stove gets hot after the start up cycle finishes (approximately 15 minutes). Upon further inspection, I discovered it needed replacing because the bearings were bad. A different stove had a squealing noise that occurred right when the stove was turned on. It came from the left side of the stove where the exhaust blower was located. Of the two blowers, only the exhaust blower starts running right away; therefore, replacing that part was the cure.
No noise at all can also indicate your stove's issue. I came across a unique issue when testing a stove. It ran for 5 minutes, then went silent. All of the lights on the control panel went out he stove died. Having no sounds in this instance helped me pinpoint the AC line cord was the issue. After the stove got warm, one of the line connecters had failed. Replacing the line cord fixed it. Also, a multi-fuel stove I worked on didn't make a sound in the burn pot. After investigating, I found the rod connected to the pot stirrer motor was so loose it prevented the stirrer from turning.
Listening to where the sound is coming from and, if possible, seeing the moving parts helps find problem areas. Knowing where the stove components are located is helpful as well. Determining whether an unusual sound occurs intermittently or constantly, or varies with the component's speed is valuable information. If the sound happens promptly as the stove starts, then the faulty component could be the combustion (exhaust) blower, auger, or auger motor. If the sound is heard after the startup cycle, then the faulty component could be the convection (room) blower. Once you identify the part in need of potential replacement, I recommend using an AC test cord and multi-tester to test this component for abnormal sounds. Sometimes, the noise only occurs when the stove is hot so a test fire is always needed to complete the analysis or assure the repair has been made. I always give the stove a complete cleaning and lubrication first, then perform the test fire.
| Fire pot or Burn Pot | ||
As pellets slide or are pushed into the fire pot a clinking sound can be heard. Bottom feed stoves that have an automatic slide plate or rotating disk have a louder clinking sound when pellets fall into the auger flight chute. In Mult-fuel stoves there may be a sound of a turning pot stirrer and motor connected to it. | ||
| Sounds that indicate wear or failure | Reason | Cure |
A, No sound, especially if pelletsare not coming into the fire pot and the fire . | A, Auger motor not turning 1. Stirrer bearing needs lubrication. | A. Replace Auger motor. B. lubricate or replace Pot Stirrer or Stirrer Motor. |
| Auger or pellet feed motor | ||
Normal operating sounds When the auger feeds pellets into the burn pot you can hear the intermittent sound of the auger turning and the buzz of the auger motor running. | ||
| Sounds that indicate wear or failure | Reason |
|
A. No sound especially pellets are not feeding into the fire pot. You may also see that the auger motor's shaft is not turning at all. B. Load scratchy sound of the auger motor bearings rubbing and failing. C A loud squeal or grinding noise as the auger hits one spot in it's 360 Degree rotation. | 1. High limit snap disc failed or tripped. 3. Bad connection to control panel or auger timing module. Check spade clips on auger motor wires by unplugging and plugging back in. Also check connectors on snap discs and vacuum switch. 4. Control panel is bad. If all other components are good then the panel maybe bad. Put a volt meter on the auger leads when stove is running to see if there is 120 VAC on it intermittently. 6. Proof or fire snap disc or heat sensor or thermocouple failed. B. Black Carbon on the Auger or inside the auger chute. Maybe due to bad pellets. C. The Auger bearing may need more grease or lubrication. | 1. Clean or replace hi limit snap disc. 2. Replace Vacuum switch or clean or replace clogged hose. 4. Replace circuit board or control panel. 5. Replace tired auger motor with worn gears or coil laminations that have broken down to cause loss in torque. 6. Clean or replace proof of fire snap disc or thermocouple or heat sensor maybe loose or need replacement. B. Grease or replace worn or missing auger bearings. C. Remove auger and clean with a wire wheel on a drill/driver. Also using a grinding stone, grind down any burrs or splattered pimples of slag from sloppy welding |
| Thermostatic Switch (Snap Discs) | ||
These parts can make a clicking sound as the bi-metal switch opens and closes. Some of these snap discs are used to turn the pellet stove convection blower on and off. | ||
| Sounds that indicate wear or failure | Reason | Cure |
| No sound, especially if convection blower never turns on. (No heat blowing out the front of the stove). | Failed Snap Disc | Replace Disc |
| Heat Exchanger Tubes | ||
The rush of air being forced though the Heat Exchanger Tubes. | ||
| Sounds that indicate wear or failure | Cure | |
| No Sound | Bad Low Limit Switch or Bad Convection Blower | Replace Low Limit Switch or Replace Convection Blower |
| Convection blower or Room blower | ||
The modern high efficiency blower may have a slight hum or pulsating sound that increases as the blower speeds up. The rush of air from the flow of heated room air through the heat exchanger tubes or plenum drawn by the squirrel cage blades. | ||
| Sounds that indicate wear or failure | Cure | |
A. A loud hum especially when the blades do not turn. B. The squeak and squeal of the bearings failing. Also sounds like metal rubbing against metal | 1. Blades so full of dust or pet hair, the Squirrel cage does not turn. 2. Shorted motor coil windings that reduce the electromagnetic field so much the squirrel cage does not turn. B. Blower motor 1. Bearings re worn or have little grease or lubrication. | B. Grease or replace motor bearings. |
| Exhaust blower (Combustion blower) or draft blower | ||
The modern high efficiency blower may have a slight hum or pulsating sound that increases as the blower speeds up. The rush of air from the flow of exhaust gases through the ash chambers drawn by the impeller blades. | ||
| Sounds that indicate wear or failure | Cure | |
A. A loud hum especially when the impeller blades do not turn. B. The squeak and squeal of the bearings failing. Also sounds like metal rubbing against metal. C. Sometimes an annoying whine can be heard that gets louder as the speed increases | 1. Blades so full of dust or pet hair, the Squirrel cage does not turn. 2. Shorted motor coil windings that reduce the electromagnetic field so much the squirrel cage does not turn 1. Bearings are worn or have little grease or lubrication C. Closed frame motor case is loose or just out of synchronization | B. Grease or replace motor bearings. C. Replace closed frame blower with upgraded C-Frame or open frame blower. |
Pellet Stove Master proudly services Rockingham County, Middlesex County, Southern NH, Seacoast NH, Merrimack Valley, Greater Boston MA, North Shore & Northern MA. We clean pellet stoves, repair them, refurbish them, and build custom hearths. We provide a thorough service and top notch expertise. Any questions contact trhs@comcast.net or call 603-553-7402.
Please visit: http://www.pelletstovemaster.com/
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'The Magnum Baby Countryside is running great now that you have fixed it!'
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Archgard Optima PS1
Breckwell P2000 Luxury Series Tahao
Enviro-EF2i
Pelpro BayView
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Englander 25-PDV
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US Stove 5660
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Also here is the current list of stoves I have fixed or cleaned so far.
Avalon Astoria
Breckwell P24i
Country Flame Little Rascal
Englander 25-PDVC
Enviro Empress
Erin Waterford
Harman Accentra
Harman Advanced
Magnum BabyCountrySide
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Quadrafire Mt Vernon AE
St Croix Hastings Englander
25-PFS Breckwell
Hudson River Saranac
Golden Eagle 5520
Whitfield Quest
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