heat pump low suction pressure - http://www.hvacmechanic.com/ Forums


Original message

meajom1

74.176.5.228

"heat pump low suction pressure" , posted Wed 21 May 10:11user profileedit/delete messagepost reply


"heat pump low suction pressure" , posted Wed 21 May 09:45



--------------------------------------------------------------------------------
Hi I have an 15 yr old 3 ton heat pump that leaked down to o psi , so we pulled a vacumn on it with valves open checked for leaks none found , so then we tried to recharge the unit , weighed the charge in + added for a 30 line set , as doing so the head pressure was @ 200 psi but the suction pressure Never would come up past 10 psi no matter how much charge we put on it . any ideas on whats wrong ? is it the seals in the compresser gone bad ? thanks in advance for any replys
Thanks meajom1

Thanks meajom1

 


Replies:

theduke03

24.250.18.179

"Re(1):heat pump low suction pressure" , posted Wed 21 May 18:08:user profileedit/delete messagepost reply


Are you saying that you put system into a vacuum to look for leaks on an empty system? If so, shame on you. Do you have suction and lilquid line temps to go with those pressures? Pressures mean very little without temps. I'm suspecting a clogged orifice but that's just speculation. Maybe the schrader depresser in your low side hose is pushed in and not depressing the schrader valve?

"My dad was the most feared furnace fighter in Northern Indiana."

[this message was edited by theduke03 on Wed 21 May 18:11]

 

 

Jojo98

68.53.201.185

"Re(2):heat pump low suction pressure" , posted Wed 21 May 22:26user profileedit/delete messagepost reply


Wouldn't be surprized if you haven't sucked air into the system.