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DT20RF Programmer?

I have just come back from holiday and my DT20 RF programmer has 026 flashing on the screen

andrew bowen
January 2023
Heating, Home Heating Systems
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Vaillant F22 fault?
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British Gas 532/i Gas Combi Boiler?
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Advice?
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Fan tries to run every 15 seconds then stops immediately?
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Greenstar 25 combo boiler?
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Remove boiler cover?
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Worcester Bosch 532/i Combi Boiler?
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Worcester boiler dripping water?
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Boiler cycle?
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Vaillant ecotec 831 plus?
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How do I work my Storad storage heater?
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Siemens RDJ10RF thermostat problem?

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Mend Heating, Home Heating Systems

Worcester boiler dripping water?

Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
Mend Heating, Home Heating Systems

Vaillant ecotec 831 plus?

Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the syst... [Read more]
Mend Heating, Home Heating Systems

Remove boiler cover?

how can i remove the front cover of my ideal logic boiler?
Mend Heating, Home Heating Systems

Siemens RDJ10RF thermostat problem?

My temp is showing on the reciever alot higher than it actually is & each time I turn the temp up to get the h... [Read more]
Mend Heating, Home Heating Systems

Boiler cycle?

My boiler only fires up for about 90 seconds greenstar 4000
Mend Home Heating Systems
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