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Last seen: Oct 6, 2026
@toodles weird. It’s only started doing this very recently?
@toodles never seen that before, not on mine.
@old_scientist That sounds like text book biofilm (I used to work on very high purity water systems for IV use and experienced it several times). I...
@toodles Here’s mine from yesterday. We are 5 person household at the moment, the big peak is the DHW cycle.
@old_scientist Thats good, it would have explained the colour at least. With the glycol, possible organic acids complicate the potential causes o...
@old_scientist To exclude it being a biofilm of sulphate reducing bacteria, if you sniff the brownish water, does it smell sulphurous or eggy?
@toodles sorry it’s not worked out for you, not much of summer left anyway. It seems you have all your heavy loads in the evening whereas I schedule...
Don’t forget, it’s not the headspace gases that are the issue. It’s the dissolved oxygen in the heating fluid that’s key. Either there wasn’t any/insu...
The colour suggests ferric oxide, ie rust. Or something of that colour that has been added to the system, but I think that unlikely. My sludge is bl...
@toodles Such elegant symmetry. look at my lumpy bag of bolts, the polar opposite. Clouds and trees and G99 limits.
@old_scientist There is a degree of nuance to the calculation. Remember that you are using a PW3 that has a unique unlimited cycle warranty in the ...
@old_scientist The service engineer powered down the external unit for about 3 hours, he removed and inspected/cleaned and tightened every single elec...
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@editor Ouch, sorry to re start the tick. I had assume...
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