410a low suction pressure high head pressure

 
Thread Tools Search this Thread Display Modes
Old 06-15-2013, 12:09 AM   #1
Junior Member
 
Dsmall07's Avatar
 
Trade: HVAC
Join Date: Jun 2013
Location: NC
Posts: 4
Default

410a low suction pressure high head pressure


Have a 2 ton 410a hp running 75 suction & 365 head pressure od temp is 79 degrees suction line temp is 69 and air coming out the vents is 68 degrees and its 77 degrees in house.. Anyone have a clue what my problem is ?????

Dsmall07 is offline  
Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. HVACSite.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

Old 06-16-2013, 07:57 AM   #2
Senior Member
 
beenthere's Avatar
 
Trade: Service/Installation
Join Date: May 2009
Posts: 844
Default

Re: 410a low suction pressure high head pressure


A restriction in LLFD if its outside the condenser, or at the metering device. Could also be a pinched liquid line.
__________________
How many times must one fix something before it is fixed?
beenthere is offline  
Old 06-17-2013, 11:58 AM   #3
Junior Member
 
Dsmall07's Avatar
 
Trade: HVAC
Join Date: Jun 2013
Location: NC
Posts: 4
Default

Re: 410a low suction pressure high head pressure


Liquid line isn't pinched do u think I should change the Txv and the LLFD
Dsmall07 is offline  
Old 06-17-2013, 04:32 PM   #4
Senior Member
 
beenthere's Avatar
 
Trade: Service/Installation
Join Date: May 2009
Posts: 844
Default

Re: 410a low suction pressure high head pressure


You can replace it also. or test to see if its working first before replacing it.
__________________
How many times must one fix something before it is fixed?
beenthere is offline  
Old 06-18-2013, 09:39 AM   #5
Junior Member
 
Dsmall07's Avatar
 
Trade: HVAC
Join Date: Jun 2013
Location: NC
Posts: 4
Default

Re: 410a low suction pressure high head pressure


How do I go about testing it iv never had to test or replace one b4
Dsmall07 is offline  
Old 06-18-2013, 03:49 PM   #6
Senior Member
 
beenthere's Avatar
 
Trade: Service/Installation
Join Date: May 2009
Posts: 844
Default

Re: 410a low suction pressure high head pressure


While the system is running, place the bulb in ice water, should see the suction pressure drop. Then place the bulb in hot water, should see the suction pressure rise. if it does both as I said, its good.
__________________
How many times must one fix something before it is fixed?
beenthere is offline  
Old 06-19-2013, 02:35 AM   #7
Junior Member
 
Dsmall07's Avatar
 
Trade: HVAC
Join Date: Jun 2013
Location: NC
Posts: 4
Default

Re: 410a low suction pressure high head pressure


Ok thank u so much ill try that Friday and let u know what happened
Dsmall07 is offline  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
High head pressure fluctuating on a new 410a install popeyess Residential HVAC Forum 4 05-30-2013 12:11 PM
normal suction low head pressure briantaddeo Residential HVAC Forum 8 01-20-2013 09:23 PM
high head pressure low suction tcbaker72 Residential HVAC Forum 54 11-28-2012 04:45 PM
High head pressure fluctuating on a new 410a install popeyess General HVAC Discussion 8 06-26-2012 10:39 PM
high head pressure low suction whitelaker General HVAC Discussion 6 07-04-2011 08:16 AM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?


SEO by vBSEO 3.6.1