Question about Carrier Heating & Cooling
Posted by Anonymous on
Is there pressure in the high side? equalize the high/low sides pressure thru the use of gages and start the compressor and take note. The condensor valves should be opened to the evaporator, both high and lowsides
Posted on Apr 30, 2015
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Posted on Jan 02, 2017
SOURCE: Two lennox heatpump 71/2 tons
check the true psi with the line psi to see if same if psi is good in cooling 225 hi and 70 low on 80'day then compressor is fine and i would start checking for temp difference on the reversing valve sometimes this will cause high suction or high discharge psi shift it manually with by energising it be cooling or heating then pull wire and see how it shifts if shifts good then txv on out door unit could be bad what is the psi in heating on the discharge line going to the indoor unit? most prv's are set at about 350 psi r22 as for suction line size its only hot gas in hp mode os no problem their shows in cooling mode as low suction psi ..hope this helps some also make sure indoor coil is clean!....thanks & rate me
Posted on May 11, 2009
make sure coil and fan are clean and getting good air flow thru the coil and not bypassing it if discharge psi ok air flow problem if high then somthing in unit stopped up some have screens in the liquid line at the coil hope this helps also make sure fan is going the right way! on indoor unit repost psi and temp readings on both lines and indoor and out door temps thanks
Posted on Jun 08, 2009
Being that you had the same problem before I would guess that it is not the filter or TXV that is the problem...
You may have another restriction in the system...
Did it work in heat mode???
Do you have adequate air flow???
Is the coil and filter clean??
Did you try to purge nitrogen through the piping when you changed the TXV???
This really sounds like an air flow problem more then anything else...
Posted on May 31, 2011
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