So first time I've actually seen in action and diagnosed a restricted condenser coil in a HVAC package unit.
10 ton 2nd out of 2 stage.
Outdoor temp 96, condenser drain 59.
Replaced filter drier and purged with nitro. Tiny amount of oil came out. Again liquid temp's too low but this time it's at the condenser drain before the filter drier, and actually some where in the condenser itself, possibly in one of the U bends.
Strange to see it even after purging and seeing good flow, but ok.
So I'm going back out this time with some R11 and a bigger nitro bottle. Any suggestions or tricks to ensure it's cleared out? I believe it's restricted few U bends before the condenser drain.
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