I know it hasn't run for about 5 years. The fuel tank was empty. The previous owner took care of it like all his tools. New fuel is in it, but when turn on can here and feel blower but doesn't ignite. After 10 sec. The blower shuts down and the red light blinks on/off per sec
If the internal magic eye doesn't see a flame it will shut down for safety reasons.
As it isn't starting it could be fuel isn't being sprayed from the spray head or the spark is absent or perhaps the fuel is being sprayed but isn't in the finely atomised spray that burns easily.
Hearing and feeling the blower only proves the motor is running producing a combustion airflow; important but only when there is combustion. I am unfamiliar with the model but usually there is an air pump behind the motor that produces low pressure air to supply the spray head which works like a paint spray gun or carburettor - air is pushed through a venturi and creates a vacuum that sucks fuel from the tank.
It is possible the solid carbon vanes in the pump are stuck or damaged or there is a fuel blockage.
The spark transformer is highly stressed and they sometimes fail.
You will need to remove the cover and check a few things inside...
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