My van is equipped with a Webasto air top 2000 ST. It broke down at altitude because it got dirty and I had to clean it completely.

Apparently you have to connect this switch to a white wire and a red and white wire. I have a white and red wire waiting but the only white wire I found is already connected to the control element. Do I have to disconnect it to connect it to the switch? When I measure the red and white wire my multimeter indicates a voltage of 12 volts. So I would like to know if my Webasto (2014) is compatible with this product. If it is compatible how do I make it work? If not, what is this red and white wire for. Thank you for your help.

Question

My van is equipped with a Webasto air top 2000 ST. It broke down at altitude because it got dirty and I had to clean it completely. Apparently you have to connect this switch to a white wire and a red and white wire. I have a white and red wire waiting but the only white wire I found is already connected to the control element. Do I have to disconnect it to connect it to the switch? When I measure the red and white wire my multimeter indicates a voltage of 12 volts. So I would like to know if my Webasto (2014) is compatible with this product. If it is compatible how do I make it work? If not, what is this red and white wire for. Thank you for your help.

This question is related to Webasto Air Top 2000ST/STC Altitude Switch.

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Answers (1)

Answered by Butler Technik's David Butler
Posted 27th February, 2025 at 12:15 by David Butler

Not all Webasto Air Top 2000 ST heaters are suitable for high altitude functionality unfortunately. We'd need to learn more about your exact heater, whether it has a suitable internal ECU and main wiring harness to accept a switch modification such a this.

Please contact us with any additional info you have. Where are you located?

Thank you

David

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