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Message
Removed flow sensor and filter and amount of bubbles appeared to
be
significantly less. Put sensor back in, and bubbles reappeared,
Very baffling.
Here's my best 3 beer guess:
What sort of "drain
point" do you have? I'm assuming this is one of the many spring loaded
valves that are commonly used to check for water in the low points of the
system. If so, and the spring is getting weak on the drain valve, I'd bet
that's where you're sucking in air. When you removed the flow sensor and
filter, that reduced the restriction upstream from the drain point, and
reduce the tendency to suck air in through the valve. If this is one
of those spring loaded valve, I'd start by changing it, or plugging it up
temporarily.
Good
luck,
Rusty (giving Finn a
break on the smart a** comments)
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