I have a BENQ MS524 and he shutdown after about 2 to 4 minutes, with "temp" light on.
Looking at the manual it is related with the fan but this one run well, and even run a bit faster few second before shutting down. I try to run the projector with the tap on the top open to avoid any accumulation of heat but result is the same.
The projector is not even hold and working less than 10 hour by month.
I'm in Mozambique and not much luck to find any technician, any help will be very good.