I'm worried that something isn't right with my RX-V2500, because the fan does not spin even when I set it to "continuous" mode (it's among the options where you also set speaker impedance). The manual says that the fan will spin continuously in this mode regardless of temperature, giving the impression it would start spinning as soon as you turn on the receiver. What I'm wondering is if what the option really does is keep the fan spinning only after the receiver gets hot enough to turn it on, whereas in the "auto" mode it would turn off again after the receiver cooled down. I'm not sure about this, and Yamaha Scandinavia haven't been able to help much as they weren't even aware the RX-V2500 had a cooling fan in the first place. Is this behavior normal for the cooling fan and do the other related models (RX-V1500, 2400 and 1400) behave the same way? The fan itself does work, I've tested it in the diagnostics menu and it spins fine then, so it's not broken or obstructed in any way.