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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How can I fix my Danfoss rx2c wireless system?

My heating and hot water is working but the room teromstat is not sending single to receiver. The batteries are ok. I can’t see the room stat on any web site

Danfoss 103e user guide manual?

Hi, does anyone have a copy of the User Guide / User Booklet instruction manual for the Danfoss Randall 103E mini-programmer timer/controller for my central heating? I cannot find it anywhere onlin ... more

Pump not working if Central Heat only, called for?

The central heating would not start, it would appear that the boiler fired but the pump did not function. If I over ride the hot water the pump works and the central heating starts to warm the radiato ... more

How can I release a stuck pin?

I am having trouble with an old Danfoss valve. Hot water will not flow into the Radiater. The pin is stuck. When I have had this problem with another radiator, I have been able to pull the pin out b ... more

Danfoss RA 2000?

I can't seem to remove the RA 2000 knob. It is turning without gripping on anything. Any idea what to do? The reason I want to remove is that it was not properly set in the first place and heat can't ... more

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Hot water & room temperature thermostat danfoss?

Need help! My temperature dial for my heating has fallen off ( this is the main that turns to switch heating on and controls temperature) its a simple dial (model- danfoss) housing association council ... more

Boiler override if roomstat fails?

How can I run the boiler for heating if the roomstat fails? Is the some sort of override function on the boiler? I have a Worcester Greenstar 25 Si combi controlled by a Danfoss RET B & RX1 RF recei ... more

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danfoss SET3E contlolled heating system ?

In my Danfoss SET3E heating controlled system I can't turn the water heater section OFF! The switch on the controller is off and the light is extinguished but the boiler keeps going!. The only way ... more

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Danfoss rx1 program problem ?

I moved into this house a short while ago and haven't quite figured out the heating system. Its danfoss and from google believe its the rx1. It was all working until yesterday i can't get it to be on ... more

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How can i fix?

My old Danfoss RX1 stopped working - no green prog light when Prog and CH1 pressed together for 3 seconds, no green light if Prog pressed on its own, but a red light and boiler fires up if press CH1. ... more

Danfoss FP715Si?

Hello, I have just moved into a new house (to me) which has the Danfoss FP715Si thermostat already installed. The house is about three years old. The thermostat is currently set for 7 day progra ... more

Danfoss REP230 Thermostat Wiring?

Long story short, I have the above thermostat and had an installer try to replace it with the new NEST thermostat. It was faulty and I couldn't be bothered with the hassle of getting another one so I ... more

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danfoss setting boiler times/temperature?

Have set 4 programs start/finish for morning and evening at 21 degrees - however the boiler comes on in between these times. How do I make sure it doesn't come on at other times of the day?

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Danfoss RA 2000 thermostatic Radiator Valve Wont shut off?

When turning the thermostat all the way down to off position it wont shut off and continues to heat. Do I need to replace valve?

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