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How can I mend my Kundo space timer?

I have a Kundo Space timer kitchen clock. It has hitherto worked perfectly but recently started losing time. A... [Read more]
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RX620?

RX620 Printer error occured please see documentation. How to fix ?
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Transformer for old Gainsborough Diplomat pump shower?

The Gainsborough Diplomat has the APL 243401 transformer now not produced anymore. I need to repair mine pleas... [Read more]
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Mend Boiler Pcb Vaillant

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We have 22 questions about mending 'boiler pcb vaillant'

How to mend Boiler Pcb Vaillant

Pages 21
Mend Vaillant PCB Heating
1

Vaillant eco plus 531 boiler?

replaced pcb board f70 ,asks for password no,17, but no 17 on display ,goes from 16 to 22 .on boiler vaillant... [Read more]
Mend boiler heating thermostat
2

Vaillant 831 PCB issue?

The boiler is very intermittent when it comes to putting the Rads on, the hot water is fine and has no problem... [Read more]
Pages 21
Mend boiler heating error

How do I fix f22 error on my Vaillent Ecotec Plus boiler?
Mend vaillant ecotec error

Vaillant ecotec plus 630?
Mend max boiler fault

Vailliant turbo max plus 824e?
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Vaillant vcw gb242 eh central heating problem?
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Hot water comes and goes!?
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Problem with the pressure in combi boiler?
Mend vaillant boiler fault f22

Vaillant condensing boiler ecoTEC plus?
Mend vaillant central heating no hot water

Vaillant 828E - no hot water?
Mend screw cold pipe

Valliant Eco tec 28?
Mend boiler vaillant ecotec

can i replace my Potterton EP2 2 way programmer with a Center EHE0200361 RF?
Mend vaillant ecotec boiler

Vaillant ecotec 831 plus?
Mend eco tec boiler

how do I rectify the fault as detailed below?
Mend Vaillant PCB Heating

Vaillant eco plus 531 boiler?
Mend boiler combi fault

Vaillant igniting issue ( domestic ) not CH?
Mend boiler hotwater vaillant

Boiler over pressure on the hot-water side?
Mend boiler pressure fault

Vaillant Ecotech Plus 831 F22 fault?
Mend boiler heating vaillant

Why is heating on at night?
Mend Vaillant Turbomax Central Heating

my boiler will no work?
Mend boiler heating Vaillant

how to fix water pressure its down at bottom of grey part?
Mend boiler heating pressure

What does f.25 mean?
Mend advice test turned

Advice?
Mend hot air temp

No hot water, intermittent when air temp drops?
Mend vaillant boiler fault code

vaillant ecoTEC plus boiler fault code - how to fix?
Mend Vaillant Heating Repair

Vaillant F22 fault?
Mend boiler heating fault

Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Mend thermostat boiler heating

Valiant thermostat , BMU-Err ?
Mend sensor diy sensor

Vaillant ecomax 828/2 e water pressure sensor?
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Vaillant Thermocompact Fault?
Mend vent heat exchanger

how do I vent the heat exchanger?
Mend heating boiler hot water

my vaillant boiler is saying a code com on it ?

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