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We've got a radiator which has been unused for some years. Yesterday I turned the valve on and left the room warming. Found that it had leaked overnight. Water is coming out between the base of the plastic housing of the TRV and the locking ring. The TRV is pretty dirty, and there was a bit of...

I've got a basic Danfoss 103 timeswitch for controlling the heating/hot water. But recently I've noticed the red and blue tappets will end up not tripping the pre-selector wheel. Instead they'll reach the position for the current time and will remain there while the rest of the dial slips past...

The C/H pump is beginning to sound like it's on its last legs. As the title says, it's a red two speed Grundfos Super 4 currently servicing a semi-detached property with eight radiators. Details on the pump are: No. UK7625 2500 r/min Type 4.50/130 50 Hz 1 Phas 220-240 V 105 W 4.0 uF...

Further to a previous post - //www.diynot.com/forums/viewtopic.php?t=198419 - I decided to see if a dose of Fernox F3 Superconcentrate Central Heating Cleaner would help me with my lukewarm hot water. I squirted it into the radiator in the bathroom - losing a bit of water in the process...

Whilst moving a suitcase I managed to snap off the head of a radiator TRV. It's quite a clean break, leaving the lowest plastic bit of the head still within the knurled ring. I'll get a new TRV but as a short-term fix I'm looking to glue it back together. Is there a specialist plumbing...

Our hot water is not so hot. Previously we could run a full bath of hot water with no problem. Now, after about 30 seconds, the water begins to run tepid. We have an indirect water system with gas central heating run by an Ideal Classic RS250 boiler. The central heating still works. The...