User stated "the pad had started a fire on the couch." the product was returned for investigation.The customer did not claim any injury.The product was approx.24 years old when the incident occurred.An investigation was done to look into the customers complaint.The investigator determined the customer had misused the pad as it was folded and laid on during use.The ifu states, "do not sit on, lie on, or crush pad.Avoid sharp folds".It was observed that the heater wire pattern had been compromised due to misuse over time.The misuse of the pad along with the compromised heater wire layout on the pad probably lead to creation of hotspots.User said that after using the pad, user left the pad on the couch, and when user returned 10 minutes later pad was smoking and burning the couch.The pad has a deadman's switch, when the trigger is not pressed, pad does not produce any heat.The investigator observed that the switch was working fine.When the user left, the pad had hotspots due to misuse which when left for 10 minutes on the couch probably lead to smoking and burning of the couch user described.
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