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Mend Help Boiler 21

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We have 34 questions about mending 'help boiler 21'

How to mend ... Help Boiler 21

Pages 21
Mend change temperature settings

How do I change temperature settings?

My temperature has been showing 25%, I tried to lower this to 21% but it now shows 27%. Is there an easy way t... [Read more]
Mend danfoss boiler set

danfoss setting boiler times/temperature?

Have set 4 programs start/finish for morning and evening at 21 degrees - however the boiler comes on in betwee... [Read more]
Mend running worcester heating

Boiler seems to be running cooler?

We have a Worcester Heatslave 20/25 boiler and it has been fine so far with regular maintenance. when the hea... [Read more]
Mend thermostat boiler temp

Thermostat for boiler stuck at 5 tried to raise it too 22 by pressing the u?

Room temp is 21.5 but I tried to raise the thermostat from 5 too 22 but it won't move when I press the up butt... [Read more]
Mend down 21 minutes

Saunier Duval F35E auto-vents down to code 21 in minutes?

7 year old boiler, noticed code 21 (radiator circuit pressure low) so she opened the filling loop but left it ... [Read more]
Mend boiler fault flashing

How can I fix my boiler?

Fault 21 flashing Semia boiler
Mend boiler not giving heat hot water

Query boiler not giving heat or hot water?

I have a Saunier Duval F24E:2 and the red and green lights as on constantly. The thermostat is showing at 21 ... [Read more]
Mend heating cut thermostat 0

why does heating cut in when thermostat at 0?

Is my modairflow thermostat faulty? it controls my JWD38/50 hot air Johnson Starley boiler but the hot air com... [Read more]
Mend boiler water flow

How can I fix my boiler?

The boiler is 21 kW Siemens model, and there is a problem with the water flow relay - it is not reacting (whe... [Read more]
Mend fine display stuck

Digistat Rf3?

Any suggestions on an Rf3 Digistat, where everything is fine except for the room temperature display, which is... [Read more]
Mend help boiler 21

Can anyone help me with my Myson Boiler?

I have a Myson Back Boiler and it is 21 years old, it ignites when I put it on and then gos out, after a while... [Read more]
Mend hot water working gas

How can i get the radiators and hot water working after buying gas?

I have a Vokera compact 25 using an Altech stat. I just bought credit on my gas after running out of gas compl... [Read more]
Mend where loop fill valve

where is the loop fill valve?

need to repressurise my saunier duval semia condens boiler as i have display code 21
Mend question heating working

2nd question. Heating not working right on my worcester 240 combi RSF?

Heating goes on then after a min or so the boiler goes off and on with a clicking sound like its trying to sta... [Read more]
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