Fix Fault Danfoss

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We have 126 questions about fixing 'danfoss' in category Heating, Home Heating Systems

Thorn Harcal 460?

Perhaps my 46 year old Thorn Harcal 460 is the last one in use, but its time is running out. The Danfoss RS 28 oil pump is leaking from the shaft area area and when I replace the 'O' rings, it only re ... more


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Cold Radiator?

Radiator in bedroom is not heating up, all other rooms are working fine. I have bled the Rad' but still not heating up, any suggestions welcome, It has a Danfoss thermostat, could this be the problem ... more


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Danfoss RX1?

I have a Danfoss RX1 attached to my Samsung air-water underfloor heating system. It has two buttons: Prog and CH1. The Prog button does nothing and the CH1 button when pressed (turns red) triggers th ... more


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Refit old style Danfoss TRV?

One radiator was cold ( not often used). I managed to take off the Danfoss cover & tapped the valve a few times. Almost immediately I heard the water flowing & then the pipe & radiator warming up. Suc ... more


Danfoss RX1-S (CH override button not working)?

I have a Danfoss RX1-S controlling my hot water the cylinder stat seems to be working ok. The thermostate shows 40C have set temperature to 60C the stat is showing asking for heat the wifi connection ... more


my danfoss 102 is not working proply?

The water only switch is working but when on set timer for water and heating only water comes on no central heating at all. if i replace with new 102 will this solve problem ir could it be something e ... more


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Fix Fault - Heating, Home Heating Systems

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