Moved into our current house nearly two years ago. It's a mid-80 link-detached with a WB CDi 37 Combi boiler. The boiler is in the first floor...
Was it working OK previously and this is a new problem?
You're quite correct. I was thinking the red was also connected to 1; which leaves two spare wires - the red (3) and black (not connected). I...
Aren't we jumping the gun a bit? I would need to know why there are three extra wires first, before pronouncing exactly what needs to be done -...
Despite being called a "heat only" boiler, which usually means it's open-vent with an external pump, the Keston Heat2 is actually a "system"...
A TRV must not be installed on the radiator in the room where the room stat is located.
You are probably correct. Unfortunately, the OP has involved us at the end of the system design stage so there are many questions left unanswered.
There's an inconsistency between the statements above as a "sealed system" normally means a system boiler boiler with integrated pump; while a...
Both pumps have been discontinued by Grundfos, so what you have found are end-of-line stock. With 35 radiators, you have a very large system. Has...
Very likely the unintended, but expected, effect of Brexit.
Spoke to the heating engineer this morning. He couldn't explain what was going on, but wondered if the condensate drain pipe had got blocked again...
CH Temperature Control When you turn past 6 up to max you can feel a switch operate. What, exactly, does the switch do? What happens when you...
[ATTACH] I can't work out which way is up on this pic. It looks as if the pump is lying on the floor pointing upwards which, if it is, is the...
Clambering on the sloping garage roof on a cold Sunday afternoon to pur water down the flue is not high on my to-do list. However, I have found...
Reset all parameters this morning (8.E = 0). The boiler resarted and went into the venting cycle for several minutes. The temperature rose and, at...
Good point. The display only shows the flow temperature. When the syphon is filling it should be showing -//- alternating with the temperature,...
The boiler is about 12 years old and was working correctly until a few days ago when it decided to go on strike - no heating or hot water. The...
That's an eight degree differential. The boiler is designed to work with a 20 degree differential. One of the reasons for this is the very high...
I hadn't noticed the discrepancy. You are correct in saying that the LS valve has to be closed to reduce the flow and increase the differential,...
So the TRVs could all be stuck closed or partly open. Remove all TRV heads and check that the pin in the metal body can be pressed down without...
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