https://community.acer.com/en/discussion/720748/acer-projector-fan-failure-error
Acer Projector H7550BD Fan Failure Error. I already did a factory reset. Please help. - Acer...
So I own a H7550BD and recently the lamp popped. I bought the exact same one and replaced it. After ~10 minutes in use, the projector shows a Fan Failure....