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Guys, I am trying to get an understanding of the components in my UFH system. Could you correct me on my understanding of the items below? Thanks. Doobs. (Thermostatic Mixing Valve?) (UFH Pump) (Manifolds - 22mm or 28mm?!?) (Motorised Valve) (No...

Guys, I am trying to get to the bottom of why my underfloor heating isnt quite working correctly. Firstly, I have two manifolds. The Bottom manifold is where the hot water comes into the system. The water then flows to the output valves. These are open or closed. Currently all...

Hey Alarm, When you say TR, do you mean the TRG from the Control Panel? Doobs

I am a quick learner.... Ok, so have tried disconnecting the battery and popped on the covers, typed in the user PIN and same error - Tamper... So it sounds like the tamper switch on the box outside yeah?

Ok, so ensured the covers were on all systems (main big box and keypad) and tried again. type in my code, Tamper goes off for 5 secs, alarm goes off, then I type in my code and alarm stops. I decided to reset to factory defaults... I now know the engineers code and have gone into the...

So found the "BIG" box in the loft... Removed cover found battery - disconnected and went to panel and hit in my code.. Tamper light went out, then after a few secs, the alarm started again! Grrr... ok, so typed in my code and it stopped, but tamper light still on. Any ideas?

Guys, I also have the Tamper light on my TS400 and have opened up the control panel to find the battery. However, I can't find one! Can you point me in the right direction please? Photo attached

Ok final check... So, thermoostat on to 23 degrees!... Check Closed all valves except Grey pipe (living room)... Check Synchro motor moves across... Check Timer set to continuous... Check Boiler starts.... Check Hot water flows through the bottom manifold and it going through the grey...

Ok another update..... I have taken the left hand valve off of the system, after closing both red taps and have then opened up the bottom tap. Water seems to flow, although slowly through the system. I compared this to a known working zone, and the water flow appeared to be about the same.