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My Immersun power diverter problems now they have ceased trading

 
Solar Thermal & Power Diverters
Last Post by pjcwood 6 months ago
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 pjcwood
(@pjcwood)
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Joined: 6 months ago
Posts: 1
Topic starter 09/04/2026 7:45 pm   [#2939]

I have had an Immersun unit for 15 years that happily worked. It had problems on and off, but when we added 2 x 5.3KW batteries 3 years ago they sold me a new unit that would divert excess power to the immersion heater when the batteries were full. I never really got it working properly. I am now unsure what to do. The mobile app does seem to work and the unit itself seems to work but when I try to get it to heat the hot water even on boost it develops an error 4 sensor error and stops charging saying check sensor wiring thermostat is ON. has anyone else had problems with this?

I notice that the wireless sensor that should have two solid green lights on keeps cycling through various options of red/ green/ orange etc.

Also is there an up to date ip address to enable the unit and the app to communicate together? 

Any advice would be welcome

Thank you

Peter


This topic was modified 6 months ago by pjcwood

   
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