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Replacing photoresistance photocell on Riello RDS boiler

Posted by Alex Overend, on
I have a faulty photocell on my boiler. The lens has been diming for some time now, cleaning it no longer gets the boiler firing again. I have a spare one sitting here and I am considering opening up the panel and swapping the photocells out. I am a software engineer not a hands-on engineer but this seems simple enough from reading the boiler manual. What could go wrong when I try to fix this?

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