Given that there is a main switch, the regulations about maximum current draw in the "off" state are already met. The wasted power in the "on" state merely contributes to heating. The "standby" state could probably benefit from just enough heat to keep the control circuit within operating temperature range. Not something I worry about in Australia, but I remember the UK is cold sometimes. ;-) Yes, the centre pin looks like a screen; the horizontal line does not meet the coil. Depower and remove to test. Yes, the two pin connection looks like it might be for a thermistor; what is it connected to, Colin? I would expect it to be in the intake air flow, or off to one side. Now we want photographs. ;-) --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .