To determine whether the igniter of your pellet heating stove is damaged, you can take the following methods:
First, look at the appearance of the igniter and check for signs of scorching, deformation, or damage. If there is obvious physical damage, the igniter may have failed.
Secondly, check whether the igniter can produce sparks normally when working. If the igniter fails to produce a spark or has a weak spark, this may mean that the igniter is damaged or needs cleaning.
Finally, if there are no problems with the above checks, but the heater still cannot ignite, you may need to use professional testing tools to check whether the igniter circuit is normal.
Please note that if you are not familiar with this knowledge, it is best not to disassemble or repair it yourself to avoid accidents or damage to other parts. It is recommended to contact professional maintenance personnel for inspection and repair.