>>The 12VDC supply is used to power my DIY 10A over-current shut-off circuit.
Could you explain the purpose or reasoning behind this?
A while back there was some discussion of cleaning the innards of the unit; have you got around to that?
I gave it a whirl, applying an idea from that bib kit - I just used a strip of masking tape and plastic (window film). The problem I had is I can't get to the blower wheel without a pressure washer of some sort. There is a condensate 'baffle' that prevents dripping from the coil reaching the blower wheel, which also prevents any cleaner/water going through the coil from reaching it.
I've seen some designs easier to take apart, but mine is pretty difficult to access the blower wheel.
I guess a dingy blower wheel must not be much of a problem....
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