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Mend Heating, Home Heating Systems

how do I increase the pressure on worcester bosch highflow 400 combi boiler?

I have a worcester bosch highflow 400 combi boiler, about 14 years old. The hot water cuts in and out when the... [Read more]
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How can I fix my worcester bosch 28i?

Hi My worcester bosch 28i combi boiler packed up(4 yrs old) so I took a look and found fuse 1 had blown. Afte... [Read more]
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Why won't our boiler (Worcester Bosch 230) pilot light ignite?

Why won't our boiler (Worcester Bosch 230) pilot light ignite? It was turned off for a few hours for a radiato... [Read more]
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Worcester Bosch Boiler?

We had to drain the system to install two new radiators. Since putting the system back on the system seemed t... [Read more]
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Worcester Bosch 240?

What are the optimum settings for the Worcester Bosch 240 Combi Domestic Boiler. The pressure setting is at... [Read more]
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System Pressure keeps building in worcester bosch 28cdi?

The system pressure keeps going above 4 bar until I release water through valve in radiator, with hot water of... [Read more]
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How do i repair a loose grey knob on worcester bosch 28CDi?

The grey knob which has to be turned anti-clockwise to pressurise the system seems to be broken as it is very ... [Read more]
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Worcester Bosch Greenstar 28i Junior RF Thermostat?

I have misplaced DT20RF Room Thermostat (part # 87161144630) so I need to manually over-ride the receiver in o... [Read more]
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any ideas what the fault is?

I have a Worcester Bosch Highflow 400 boiler. The hot water works fine, the problem is the central heating. Th... [Read more]
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worcester bosch 230?

hot water takes a long time through taps and shower replced new diverter valve please help
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Gravity shower goes hot and cold?

Had a radiator removed by plumber and since then the shower runs hot and then very cold then very hot again. ... [Read more]
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worcester bosch heatslave 20/25 oilfired boiler?

when hot water or central heating are running bar pressure rises over 3 bar and overflow active . when unit l... [Read more]
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worcester bosch heatslave 20/25?

bar pressure rises to 3 and overflow active when cold drops back to normal 1 bar
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Worcester Bosch Oil Heatslave 20/25 two years old?

Can not get the central heating to work; the water pump does not seem to be running. Hot water fine. Had a lon... [Read more]
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Worcester Bosch Heatslave 15/19, No water pressure?

I realise that mains water is needed to increase pressure, but I can't see any valves or connections where i ... [Read more]
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how do i increase the water pressure on a worcester bosch 35cdi II boiler?

how can i increase the water pressure on a worcester bosch 35cdi II boiler.... the pressure is on 0 and not h... [Read more]
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My Worcester Bosch Greenstar CDi is showing an error code?

My boiler is not working and is showing an error code of 5E or SE. I've tried to reset it and turn it off, bu... [Read more]
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How do I increase boiler pressure /?

I have had a Worcester Bosch combi boiler for 8months and notice the pressure gauge has dropped to just above ... [Read more]
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How do I ignite my Worcester Bosch 24i boiler?

h ow do I ignite my Worcester Bosch 24i boiler? I have followed the instructions from the user manual. I h... [Read more]
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Combi stops firing for hot water when cold tap turned on?

Hi I have a Worcester Bosch Thermotechnik combi - on the boiler casing is a Bosch-stamped cert saying it is... [Read more]
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