History...
System started to not cool.....
The low side read only 25psi....
Added 134a and the compressor started "Short Cycling"
Finally got a guage and with approx. 40psi low side the High side is quickly jumping to >450psi before the high pressure switch custs the compressor off. This only takes about a second or so of compressor run-time for this to occur. Obviously somethiing is stopped up. I am thinking the the expansion valve.
FWIW... in the morning... After sitting up all night the compressor would run for a minute or two and the system would produce cold air.
Am I on the right track? Any other ideas from the A/C experts?
Also, what do you think of this synthetic "sub-zero" 134a? Is it worth using when I recharge, or should I just the standard stuff?
Thanks,
Mack
System started to not cool.....
The low side read only 25psi....
Added 134a and the compressor started "Short Cycling"
Finally got a guage and with approx. 40psi low side the High side is quickly jumping to >450psi before the high pressure switch custs the compressor off. This only takes about a second or so of compressor run-time for this to occur. Obviously somethiing is stopped up. I am thinking the the expansion valve.
FWIW... in the morning... After sitting up all night the compressor would run for a minute or two and the system would produce cold air.
Am I on the right track? Any other ideas from the A/C experts?
Also, what do you think of this synthetic "sub-zero" 134a? Is it worth using when I recharge, or should I just the standard stuff?
Thanks,
Mack
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