At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Sounds like bad valves in the compressor.
A good indicator is how fast the pressure changes when you shut the compressor off. It should take several seconds for the suction pressure to rise. If it's immediate, then expect a bad valve.
This is true as long as it is not a heat pump. Make sure they replace the piston (metering device to match the outdoor units required piston size. Or if the indoor coil is metered via TXV, it will automatically meter the refrigerant flow. If you are mismatching a system, make sure an acid test is performed on the old refrigerant and take appropriate measures with the new system if the test shows positive acid. They need to definitely install a liquid line drier. Hope this helps.
Yes you can if the 410 a/h is new just put a r22 txv on it I have personally done hundreds of them mainly carrier they even sell the conversion txv. I'm a 15 year hvac sub contractor and I know my sh##
First front seat the valve stem on the expansion valve (in all the way), then backseat the valve (out) six turns. Next pump the system down and change the drier, evacuate, open the "King-Valve" on the receiver and allow refrigerant to circulate. Rule of thumb (ole school) measure ambient temperature add 25*F convert this temperature to pressure for head pressure. Also check RLA (running load amperage). Allow system to run about 2 hours then check TXV Superheat should be 6*F for low temperature.
This evaporator core is R-22 / R-410A compatible.The Thermostatic Expansion Valve (TXV) is for R-22. If retrofitting to R-410A, a new TXV metering device would be required, but the evap. core itself could be re-used (as long as you stick with the same Tonnage you have now). If upgrading to a higher tonnage system (like going from 4-Ton to 5-Ton), then you would need a totally new evaporator core.
Add 404A to system. It is low on gas. But kep an eye on the TXV for ice buildup. Make sure unit is free of ice before you charge it. It is difficultr to charge a refer system when itis iced up. Rus
Depends on what kind of refrigerant its works, if is an old unit probably is charged with R12 or R22 newer ones work with R404 ;for R12 presures should be around 20psi on the low side and 160 on the high side ,for R22 about 60 and 250 and for R404 50 and 350 ;you have to look at the condensing unit tag to find out what type of freon its uses ,or look at the expansion valve at the evaporator coil.
×