I read through the general troubleshooting posts and was hoping for a little additional clarification.
Last week, my Napoeon NPI 45 pellet stove stopped feeding pellets. I followed the owners manual to try to troubleshoot it.
1) Changed the fuse.
2) reset the high-limit swtich.
3) Vacuumed out the fire box and the little exhaust port nooks.
4) Tested the voltage going to the auger.
5) Checked the vacuum hose for blockage. I surmised that the auger motor died.
6) I vacummed out the vent tube (T connection) as much as I could.
I replaced the auger motor and patted myself on the back for a job well done. Within 60 minutes, the same thing happened. Everything has stopped and the #4 LED is lit up (indicating a high-limit failure). Each time I attempt to start it, no pellets move. I can press the auger button and see the LED light up . . but nothing moves.
I bypassed the highlimit switch just to see if I could get some action. . . . no dice. I removed the vacuum hose and checked for blockage. no dice. I tested the pressure switch and it clicked with small changes in pressure.
The owners manual suggests that repeated high-limit failures can be due to a dirty exhuast fan. This makes sense, but I'm curious how the high-limit failure is occurring when I've bypassed that limit. Does the fan have it's own over-heating sensor? Even so, I would think it would take a little while for that sensor to detect that it's overheating.
So . . I guess my questions would be:
#1: WHy would the high limit sensor continut to fail, even though I've bypassed it?
#2 My next step is to remove that fan/motor and clean it up. The owners manual suggest that I have a spare gasket handy. Is this a universal part that most hearth stores would carry (Napoleon part number: W290-0122)? I'm so eager to get this thing going again. If I can't find the exact gasket from a local store, should I consider changing out the fan altogether?
I appreciate any advice.
Thanks,
Mike
Last week, my Napoeon NPI 45 pellet stove stopped feeding pellets. I followed the owners manual to try to troubleshoot it.
1) Changed the fuse.
2) reset the high-limit swtich.
3) Vacuumed out the fire box and the little exhaust port nooks.
4) Tested the voltage going to the auger.
5) Checked the vacuum hose for blockage. I surmised that the auger motor died.
6) I vacummed out the vent tube (T connection) as much as I could.
I replaced the auger motor and patted myself on the back for a job well done. Within 60 minutes, the same thing happened. Everything has stopped and the #4 LED is lit up (indicating a high-limit failure). Each time I attempt to start it, no pellets move. I can press the auger button and see the LED light up . . but nothing moves.
I bypassed the highlimit switch just to see if I could get some action. . . . no dice. I removed the vacuum hose and checked for blockage. no dice. I tested the pressure switch and it clicked with small changes in pressure.
The owners manual suggests that repeated high-limit failures can be due to a dirty exhuast fan. This makes sense, but I'm curious how the high-limit failure is occurring when I've bypassed that limit. Does the fan have it's own over-heating sensor? Even so, I would think it would take a little while for that sensor to detect that it's overheating.
So . . I guess my questions would be:
#1: WHy would the high limit sensor continut to fail, even though I've bypassed it?
#2 My next step is to remove that fan/motor and clean it up. The owners manual suggest that I have a spare gasket handy. Is this a universal part that most hearth stores would carry (Napoleon part number: W290-0122)? I'm so eager to get this thing going again. If I can't find the exact gasket from a local store, should I consider changing out the fan altogether?
I appreciate any advice.
Thanks,
Mike