Before you set the ‘ON’ and ‘OFF’ times for your underfloor heating, you need to be aware of a display error on the Underfloor Heating Time switch (Danfoss FP975) control unit. 

This unit has two red push buttons identified as Zone 1 and Zone 2. They cover the underfloor heating of your Lounge and Kitchen (Zone 1) and your Bedroom/s (Zone 2). 

However, when you set the ON and OFF times for Zone 1 the display on the screen shows as CH (Central Heating) and the settings for Zone 2 displays as HW (Hot Water). But this unit does not control the Hot Water. 

So, when you are setting these times, you have to remember that -

CH = Zone 1 = Lounge and Kitchen

HW = Zone 2 = Bedroom/s

If you can get your head around this ‘you are a better man that I am Gunga Din’



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