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Heki 4 electric roof light rain sensor

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Hi

Has anyone tried replacing the rain sensor in the Heki 4 roof light? 

I love this light and it's brilliant for the dogs.   If i go out, i'm confident that it will shut if it rains; however, recently the rain sensor has started to malfunction.  

 

I notice that Dometic no longer advertise the Heki 4, and getting parts for it is harder than finding hens teeth (60-64 days lead time and £42 to boot), even though some website still advertise the Heki 4 for sale (and the 2019 Bessacarr caravan advertises a dometic electrical closing roof light over the bed...?).

 

I've seen rain sensors for sale in electrical websites (eg https://ardushop.ro/en/home/689-rain-sensor.html or https://www.matiot.com/arduino-rain-sensor), but i've no idea whether they are compatible? 

 

Thoughts...?

20200331_143111.jpg

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Might be worth trying some electrical contact cleaner and a fibreglass pencil to clean the contacts as they look a bit dull and corroded. I believe the sensor works by water joining two of the strips together to create an electrical short and therefore tell the sensor module that its raining

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We have a 2019 Bessacarr with an electric Heki over the bed, it is not fitted with a rain sensor and can be manually overridden should the power or motor fail.

 

I did think it would have had a rain sensor.

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Our previous Bessacar had the same problem occasionally.  As Lockin says, a good clean always did the trick. Always worth a try. 

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