There are a few signs that can indicate a bad or failing pellet stove igniter:
1. Lack of Ignition: If the igniter fails to heat up or ignite the pellets, it could be a sign of a faulty igniter. This can manifest as the pellets not lighting, the stove not starting, or the flame not staying lit.
2. Slow or Inconsistent Ignition: If the igniter takes longer than usual to heat up or if it ignites the pellets inconsistently, it may indicate a problem with the igniter.
3. Physical Damage: Inspect the igniter for any visible signs of damage such as cracks, breaks, or disconnection of wires. Physical damage can prevent the igniter from functioning properly.
4. Error Codes: Some pellet stoves are equipped with error codes or diagnostic functions. If your stove displays an error code related to the igniter or if it provides other indications of an igniter problem, it's worth investigating further.
5. Soot or Ash Buildup: A deteriorating or malfunctioning igniter can result in incomplete combustion, leading to excessive soot or ash buildup inside the stove. If you notice unusually high levels of soot or ash, it may suggest an issue with the igniter.
If you suspect that your pellet stove igniter is bad, it is advisable to consult the manufacturer's manual or contact a professional technician to diagnose and fix the problem.