Hood filter service — blackened aluminum filters with accumulated grease reduce suction AND are fire hazard (grease is flammable). Monthly cleaning critical.
See if any of these signs match your device — each one increases the likelihood of this fault.
These are the causes we encounter while repairing Filters very dirty — ranked from most to least common.
Neglecting monthly cleaning
Heavy frying/grilling use
Using hood without filters (rare but dangerous)
Old expired filters
Wrong cleaners causing grease instead of cleaning
Any of the following = a danger signal — call now and don't try to fix it yourself.
On-site diagnosis, clear pricing before any work, and a documented 6-month warranty.