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Baxi EcoBlue heat only has a temperature setting dial up to 90C, but on checking its technical specifications, it is still 80C max flow temperature. Are you sure you have found any particular models which have 90C output? Kingspan Flowmax is bitter strange, somewhere said it maintains 82C but...

Oh Adam, I will give you a Baxi Solo 3 job soon which is inside an top floor flat in north London.

The worst case is, the installer didn’t survey the exiting wiring promptly, and chose a boiler model which requires pump over run, like Vaillant and Worcester. After he installed the new boiler, he didn’t connect the pump over run, so the boiler will run, but often get over heat cutouts. If you...

For Kingspan Range thermal store, if it is a twin pump pack, you need to check how many cores on the cable between the boiler and thermal store. If it has 5 or more, you can use whatever boiler you wish. If you only have 4 cores, you will be okay with 1. 2. and 3. If it is only 3 cores, then...

If you want a heat only boiler which doesn't pump over run, it must be one of the followings: 1. Viessmann 2. Ideal Logic 3. Vaillant ecoTEC 4xx series 4. Baxi EcoBlue. As the first three all need a permanent live alone with a switched live, so only Baxi EcoBlue is suitable for your...

Thanks for teaching me that!

It is likely opposite. Digital sensor is blocked to give a wrong reading and analogue gauge is correct.

Also check D24 to see if the air pressure switch is made.

Most of common failed parts on this boiler is the shunt pump, but if it fails, you normally get some error code.

Which version is it? With two big dial knobs or just push buttons? This is a boiler even most of gas engineers are struggling with to repair. If you have already completed some basic checks, like water pressure etc, then I suggest you call Vaillant for a fixed price repair.

If the same new boiler, Viessmann Vitodens 200, the same unvented cylinder, the same radiators, and importantly the same energy performance rated house. On/OFF room thermostats (ErP class I), most mechanical room stats TPI room thermostats (ErP class IV), most digital room stats. Modulating...

With cylinder is bit cold, put hot water only on the programmer, remove valve head off the base, the level should be at hot water side, otherwise the head is faulty.

Motorised valve stuck in heating opening position. Take the head off and lubricate the shaft.

Likely by a faulty room stat or motorised valve for heating.

Lol! Boiler make and model, what is the system etc?

Hot water flow sensor.

The grid will just turn it off if a tenant said fume or so, even there is no CO reading etc. Most of their engineers are not qualified with boilers.

It is not required, and there are no sample points in most of cases with front fires on. Believe you are a RGI and saw you in the CC, so please discuss this further in the CC if you wish.

Lol, the board.

Fan then