Evap cold only at bottom but when dipping sense tube in warm water all evap work
#1
07-14-17, 09:53 PM
Join Date: Jul 2017
Location: United States
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Evap cold only at bottom but when dipping sense tube in warm water all evap work
Hi, I noticed my AC is not keeping up (about 5 years old R22 Evap and 3.5 years old compressor 4 ton) with the heat mid-day. The system has been working for the past 5 years, I keep the house on 75.
I Checked the evap with a thermal camera and only bottom half was cold (~30) and top part of evap was warm (~70). I dipped the sense tube (~60 when on return line) in a cup of warm water and I could see with the camera how the higher evap tubes are getting colder (in less than 5 min went down to ~60), I guess that means there is enough refrigerant in the system? (I don't have a gauge set to check subcooling).
Are these symptoms possibly indicating I need to adjust the TXV? Or am I missing refrigerant?
More stats:
Liquid line temp (same temp on both end of drier): 82.5
Suction line temp: 70
Outside temp:91
Thank you in advance master.
I Checked the evap with a thermal camera and only bottom half was cold (~30) and top part of evap was warm (~70). I dipped the sense tube (~60 when on return line) in a cup of warm water and I could see with the camera how the higher evap tubes are getting colder (in less than 5 min went down to ~60), I guess that means there is enough refrigerant in the system? (I don't have a gauge set to check subcooling).
Are these symptoms possibly indicating I need to adjust the TXV? Or am I missing refrigerant?
More stats:
Liquid line temp (same temp on both end of drier): 82.5
Suction line temp: 70
Outside temp:91
Thank you in advance master.
#2
07-15-17, 03:30 AM
Super Moderator
These forums do not support DIY sealed system advice and can not be of help.
There are several professional forums that do.
There are several professional forums that do.
