Perhaps you haven't read the manual;- as shipped the devices are 'equatrorial' ex-factory. You need to set the dip-switcha to North or South 1 / 0 . {along with settings for language; time (metric or sexagesimal; weight (Kgs/grames/ ounces (avoidupois or Troy) etc. etc. } When the machine 'knows' which way the water goes down the plug-hole it'll attempt to match this. - a turntable which alternates direction of movement on turn-ON may be an indicor for the device thinking it's still on a ship in the Straits of Malaccca. {Some forward shippersset the dip switches while the ship is in the Singapore Roads prior to the devices being shipped on to UK. These devices may cost more that than cheaper models. Luckily a Water molecules is the same dimensions all over the planet and a microwave will 'flip'; the diamagnetc molecules no matter which way the turntable is going. HTH.
Concur: who's got time to look through the glass window and comment; "Happen that turntable went t'other way'. Mother!"