boiler control

Hi Wonder if anyone can help? I’m having a problem with my combi boiler, the CH keeps cycling on/off on a three minute cycle instead of modulating at the set temperature. It will fire up and ramp up to max fire before dropping back again but then overshoots the set temperature (65degC) and...

Hi guys. I fitted a Hive for my mum as far as im aware my wiring is correct but we cant get the stat and receiver to pair. Paired the L N E from the boiler to the receiver. Then i i linked L in receiver to terminal marked “1”. Then i brought room stat cable to terminal marked “3” on...

Hi I own a Glow-worm 45/60 B boiler but my analogue timer (EMP2) is no longer functioning. I'm curious if there's a way to manually activate my central heating and hot water without relying on the timer. I understand the timer has a continuous option however it seems to be malfunctioning and...

Hi, I just moved into a house which has Vokera Compact HE boiler with mechanical clock timer on it which is super inconvenient and therefore would like to change to smart thermostat. My current boiler (Page 35 for wiring diagram)...

Hi, Have a Valliant EcoTec plus 637 system boiler that is showing no error codes and S.0 (no demand for heat), but it is not heating. Have checked that it is receiving switched 240V heat demand into PCB, so believe it's a boiler issue. Boiler was working fine up until needing to fix small...

My heating engineer is going to install a new combi boiler for me (Ideal Logic 2 Max), which I think he will fit with a standard thermostat / control. This boiler seems to support OpenTherm, and I'm wondering about fitting a smart thermostat and radiator valves at a later date to improve...

Hiya all, I have WB 4000 system. 2 twin channel Lyric T6's and 1 single channel T6. 1st dos zone 1 and hot water with a 2port valve each. 2nd zone 2 and a 2prot Vale. The 3rd T6 go's to UH pump no two port valve. First 3 liven up Orange (from B on receiver box) and that go's to LR on the...

hello, Does anyone know if the vaillant-ecotec-plus-831 has a CH Run output, VFC or similar that I could use to switch a UFH circulating pump? i dont see anything obvious here - https://library.plumbase.co.uk/flipbooks/RE/vaiecop831_22527_t/mobile/index.html#p=24 it's currently got a Hive...

Hi, I hope someone can help me with this. I just got new thermostat but I'm a bit confused with the wiring. Because my old thermostat have only 3 cables- L,N and call for heat cable. The new thermostat I know when to connect L and N but I don't know in which port I need to connect -call for heat...

I’m looking to change a Honeywell T45 to a Honeywell T6R HW. Y plan system boiler with existing thermostat in the hallway and control box next to the boiler. Can anyone tell me which wires go where and which ones will become obsolete when I take out the old rotating thermostat from the hallway...

Hi sorry if this has been asked before but does anyone know if its safe to use the de-aeration function of my boiler a few times to temporarily heat my system. I'm waiting on a second technician visit tomorrow as one who visited didn't have experience with Myson thermostats. My boiler works...

Hi, I’ve just purchased a nest gen 3 to replace by heating controls and just wanted reassurance/guidance with the wiring before I go ahead as I don’t want too fry my boiler pcb etc. I currently have a glow worm 18hxi boiler and a British gas programmer and a Honeywell thermostat that hasn’t...

Hi, I have a Logic 24 Combi boiler. I have started having issues with the heating a couple of days ago when I realised the CH was not heating the radiators as much as it used to. I thought this may have been down to the pressure and tried to increase it slightly because it was on 1 bar and im...

Hi, I am trying to replace a broken and now discontinued heatmiser rc1-w with a newer heatmiser from switch. I had to get a plumber out to diagnose, but he didn’t have the spare parts, so I said I’d wire in the replacement as it was just a case of putting the same wires back in the same...

Hi, I have just moved into a house a few months ago, there is a large Tribune II upstairs and a Flexicom 30SX down stairs, the pressure on the flexicom drops daily from around 1.4 to 0.5 and needs topping up regularly. I am now to the point I think there is a problem with the Tribune system as...

Hi, my old combi boiler's programmer is on the boiler it self. The boiler sits in the loft room so not very convenient to access. Is it possible to install a modern digital programmer which can be wired in to the existing boiler control panel? Does it require an expert service or can be done DIY?

I am having a problem with my boiler, an Ideal Minimiser SE. The boiler fires up and the burner light switches on, but after x amount of time (sometimes immediately, sometimes after like 10 minutes) the burner switches off, the water pump however is still going. It does this before the house...

I have Drayton 2 channel programmer, for a while the clock would come on for the hot water but the boiler would not start up. Discovered if we switched the heating on and then off on the timer the boiler would start up and heat the water and go off with the timer. Since the temperature has...

Hi, 1st post and I'm a bit of an amatuer (can do basic wiring) so be gentle... Basically I need to wire a 3rd generation Nest Heatlink to a Vaillant EcoTEC 937. Could someone please relate the Nest instructions to the boiler wiring diagram for me? I'm not sure which Nest instructions I should...

Hello, We bought a house and in the kitchen, right next to the kitchen ceiling light switch there's an appliance switch (20A neon type) controlling the combi boiler installed upstairs in the bathroom. It's very confusing having 2 switches for 2 completely different things right next to each...