John purchased a new auger motor for his 2005 St. Croix Afton Bay. John called and said the motor did not work. Mr. Pellethead recommended he run the motor direct to troubleshoot whether it was the motor or a safety issue. John replied back that the motor ran fine when operating to direct power. He asked how he would go about locating what was causing the problem and not allowing the motor to operate. (Check this blog post to learn how to direct test/bench test an auger motor.)
Mr. Pellethead Replies:
I’m going to assume it’s either the pressure/vacuum switch or the high limit snap switch in your stove that’s not allowing the auger motor to work.
1. Make sure your exhaust vent pipe is clean all the way through. Combustion/Exhaust motor housing is clean as well. We offer vent cleaning kits and a high powered vent vacuum cleaning option.
2. Make sure the door seal and ash pan seal are tight all the way around. (Use a piece of paper, stick halfway in and shut door. Should have strong resistance when you pull out). Do around the main door and ash door.
3. High limit snap switch may have a red ‘reset’ button in the center of it. Push that in. If for whatever reason the stove got to hot it may have tripped the high limit. Located in the rear of the stove either by the back wall or auger shaft tube. Not all models had a resettable snap switch. Your owners manual will indicate which one and where for your year model.
How did your fire look when the stove was running last? Was it a torchy, vibrant, clean looking fire or was it a lazy, dirty, sooty fire? Could also be the combustion fan no longer providing enough air. This would trip the pressure switch and not allow the auger motor to run.
Both the Vacuum Switch and High limit snap switch can be bypassed TO TEST ONLY. You can make up a short jumper wire using male connector ends. Pull the wires off the safety switch and connect together with the jumper wire. if the motor works you know it’s either the switch itself that is bad or something else with the stove that needs to be addressed before it starts operating again (safety issue/s like plugged exhaust, leaky gasket, weak exhaust fan, etc..)
NEVER LEAVE SAFETY SWITCHES BYPASSED; FOR TROUBLESHOOTING ONLY.
Contact Mr. Pellethead for expert advice on how to service, maintain and take care of your pellet stove.