Climate Solutions Community

It is not exactly 50k. brown green orange = 15k brown red orange = 12k so together 27k. I didn't have anything closer. With with formula it shows that the 500ohms is with this resistor combination 491ohms. The temperature that shows on my heater is much nearer to the outside temp. ... Mehr anzeigen

Than this should be the link: https://ibb.co/fweVRn ... Mehr anzeigen

How do I add a picture? I don't see that option. In fact, it is very simple. On connector X6, the outside sensor cable is connected to 3 & 4 (Vitodens WB2). You also connect the resistor at the same connector at 3 & 4. Then it is than in parallel. If you have an Ohm-meter, you can check the final resistance. Any resistor will do. I used old ones that I removed form an old radio. It did not have the correct resistance so I used 2 in serial. ... Mehr anzeigen

It is also possible to add a resitor in parallel to the sensor contact at the burner. Mine was showing also 5° higher than ambient temperature. I added a resistor of 50.000 ohms. The sensor shows 500 ohms by 0° The formula is 1/(1/500 + 1/50.000) = 495 ohms. 495 ohms correspond with -5° outside temperature. so about 5° lower. It is simple and not expensive.   ... Mehr anzeigen