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Here is a post where someone has managed to take the cartridge apart. http://www.diynot.com/forums/viewtopic.php?p=1646635#1646635 Have found a supplier for the o'rings inside on ebay which I have ordered. Will report back :D

Right tenants moved out and once again I find the shower has not had a minor fault reported out which has turned into major. The rectifier loom microswitch had water damage so was only operating on low speed. Got new loom and cartridge gasket. Fitted back together and still have a minor drip...

Tony you a wrong on the above the boiler on standard software WILL NOT modulate down during the first 50 seconds this is part of many peoples problems, both on VRC and standard on off controls. However as you know the S.53 is a different problem. Have you actually stood in front of one of tese...

Yes the boiler fires at a percentage of maximum output of the boiler. I have not perceived any difference in the first 50 seconds on 428's whether d.0 is set to 30 or 5, perhaps it is different for the 438 series? Can the OP check the fan speed during the first 50 seconds when set to 18 as...

What is getting me is how when the system is cold changing to 18kw stops the s.53 that comes after 20 seconds. As we know these boilers dont take into account during the first 50 seconds the value of d.0 and just fire at around 70% of max rating. Havent read the full thread but has it always...

Key perhaps to this does the s.53 only happen after the boiler has cycled? Can you shut the zones down when on the first fire and see if an s.53 occurs before a cycle this will indicate if that circuit is capable of taking the chosen d.0 setting? Have you adjusted pump overrun and the anti-cycle...

Can you re-cap when you have a relatively large system calling for heat on all zones everything is fine for the first fire from cold? But it is when zones close and eventually the boiler cycles it then probably refires after waiting a period of time it then fires at an inflated rate and short...

Not sure how another post has been created very odd. Anyway here is a picture of the repair and the problem. On the one before the repair that isnt a crease in the copper it is the earth from a 2.5mm T&E cable to show the scale of the proplem

Hi, had an unexpected 22mm pipe under a floorboard that I was cutting with the multitool. It had been notched and was sitting very close to the surface hence even with the half moon tool it still nicked it and caused a slight leak. The nick is probably 3mm in length and less than 1mm thick and...

Hi, had an unexpected 22mm pipe under a floorboard that I was cutting with the multitool. It had been notched and was sitting very close to the surface hence even with the half moon tool it still nicked it and caused a slight leak. The nick is probably 3mm in length and obviously as deep as the...

Unvented cylinder rather than 937, or hybrid solution if you really are that desperate for room, glow worm ultrastore is the best of both worlds and also has back up provided by immersion heaters

Neutral should be removed from the wiring centre. So it is not live

OP You really need to make sure that the HW is stored @60 yes you may think it is hot but it could be someway below which will mean less cold mixed in for showers and baths so more demand on stored HW. I store mine at 62c (all showers so do not need to comply with legislation mentioned by...

Hi, are you sure that it is timed not to come on during no draw off? As there seems to be some doubt there. Also as Agile says a lot will depend on the flow rate of your outlets. Also very important is the temperature that your store the water at? This should be confirmed with an accurate...

10kw is not a great turn down ratio especially if using TRV's and advance controls IMO. Was impressed by the new ideal that is 1:6 turndown. I would look elsewhere than BG and also remember most warranties require you to have an annual service to be honoured (or at least the small print says...

Yes the myson does it all (hopefully still got the tpi/load compensation as well as smart start), they are even bringing out a Wifi one soon. Cannot fault the old MPRT it really seems to control the boiler well apart from my niggle. Have turned it to Oil from Gas which has the effect of changing...