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I installed a new goodman air conditioner last year.

Customer Question
For some reason my suction...
I installed a new goodman air conditioner last year. For some reason my suction pressure is lower than normal and my head pressure is higher. Could this be because of the piston? Normally i use txv valve and never have issues.
Submitted: 2 years ago.Category: HVAC
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Answered in 5 minutes by:
6/15/2015
HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 2 years ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 23,038
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Hello,

It very well could be an obstruction at the piston.

Is the indoor coil clean, filter clean and good air flow?
Outdoor coil clean?

If those items are fine then I would say you have a blockage. Did you purge nitrogen while brazing?
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Customer reply replied 2 years ago

Yes sir. Would you suggest pulling out piston, and purging line set again.

HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 2 years ago
Correct..I would pump into condenser..open system and blow out lines and coil.

Reattach, vauum and let go.

If you really want to go an extra step...reclaim..unhook, purge,,and drop in a new charge.

Check the piston physically to make sure it is not stuck....

Billy
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HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 2 years ago
Hello again,

without rating the service the question stays on active/prompt list.

Please rate service and I will move off active list
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