Love when there are multiple solutions. ;-)

Is there the equivalent of Harbor Freight in NZ? I'm happy with the quality of the high/low gauges I got there and it is required for actual troubleshooting.

Compressor won't kick on without minimize low side pressure

Hot on high side indicates compressor is compressing. If low side doesn't get cold, problem should be related to the orifice or the dryer.

One possibility: air in the system. Introduction of air will cause exactly the symptoms you describe

So: definitely need to know high and low pressure with compressor on and off to know the next step

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)