Just happened to me..
Your main water heater/pump unit inside the T90i is on it's last legs.
Or, the fan is caked in dirt causing a grinding noise when it spins. (Can be cleaned)
Mine died about a month after cleaning it.
Remember to Cut the power to the unit & switch of at the mains fuse box before you attempt to open or repair the unit so you don't get a free crazy hairstyle in the process.
Get a plumber/electrician if your not confident at giving it a go.
I'm looking to repair one myself at the mo...
-Joe
Joe, August 2008
