Dune
Senior Member
Works fine in cool mode. About 2002 vintage unit, which was icing up the evaporator coils (dual evaporator/fans on this one) early summer so had some R22 added, which cured that problem and it cooled fine all summer...
And still does on warm days like yesterday. But, put it in heat mode and it goes into low pressure shut down within a minute or two.
Could R22 pressure be right at the verge of triggering the LO PS shut down but more prone to that in heat than cool ? Or perhaps the reversing valve is stuck ? Or ??
And still does on warm days like yesterday. But, put it in heat mode and it goes into low pressure shut down within a minute or two.
Could R22 pressure be right at the verge of triggering the LO PS shut down but more prone to that in heat than cool ? Or perhaps the reversing valve is stuck ? Or ??