I have a York HVAC unit that will start off working fine (blowing cold air), then at times it will blow room temp air. It doesn't happen all the time. First HVAC tech thought it was a 'TVX' valve but told me to find a York expert, he checked everything else and added 1 pound of Freon. Second HVAC tech (York expert!) told me and replaced the outside fan motor. He said it was overheating and stopping. He replaced the motor for $600 but I still have the same exact problem. Now they don't want to have anything to do with it. They are the ones who installed it in the first place about 7 years ago. What should I do now? AND of course the season is coming to an end...
NIce Price!!!! How much was the freon? 7 years could be the codmpressor now did they clean the condenser coil? many things can og wrong, but if it quits running it's pretty much the outdoor unit, like the contactor, capasitor, compressor etc! good luck! mac
It sounds like the TXV may be the problem as this is what controls the amount of refrigerant that flows through the evaporator coil. The other possibility is the refrigerant charge may be low. If the indoor coil is freezing up this a pretty good indicator of a low charge condition. If the coil is freezing up, you should notice a reduction in air flow also. Other things to check would be filter cleanliness, location of sensing bulb for the TXV, and proper duct connections and insulation if necessary.
Need to know what model, what SEER, and if you have starting components because if the AC techs are adding freon to a unit that cools intermittently they might be adding to the problem. An overcharged unit with a TXV would have trouble starting between cycles, and the compressor could be overloading and shutting itself off, thus the intermittent cooling. A lot of manufacturer's are leaving the option for a start kit with the contractor. And even then the right charge of refrigerant is still a must. Like the other comments, there are many factors involved with a problem like yours, and the short of it is, you really need a qualified technician. With the temperatures here in Jersey being below 65 degrees, you should wait till next spring to check the charge properly.
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Originally posted by John from Jersey: I have a York HVAC unit that will start off working fine (blowing cold air), then at times it will blow room temp air. It doesn't happen all the time. First HVAC tech thought it was a 'TVX' valve but told me to find a York expert, he checked everything else and added 1 pound of Freon. Second HVAC tech (York expert!) told me and replaced the outside fan motor. He said it was overheating and stopping. He replaced the motor for $600 but I still have the same exact problem. Now they don't want to have anything to do with it. They are the ones who installed it in the first place about 7 years ago. What should I do now? AND of course the season is coming to an end...
Check to make sure that the condensor coils are not freezing. Humidity in the ambient air condenses and then freezes on the coils. Make sure that the coils are clean and set the thermostat so the unit does not run continuously.
Originally posted by mac55: NIce Price!!!! How much was the freon? 7 years could be the codmpressor now did they clean the condenser coil? many things can og wrong, but if it quits running it's pretty much the outdoor unit, like the contactor, capasitor, compressor etc! good luck! mac
It's a York H2DH036506A SEER 10 I'm told. Not sure on the starting components. How do I tell? The tech made sure the freon was at spec for my unit. I guess one of my main questions now is, should I get my money back on the motor because that did not solve the problem? And should I get the whole unit replaced or just the condenser? Also, what would be a fair price for a whole outside unit?
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Originally posted by Bill Koehler: Need to know what model, what SEER, and if you have starting components because if the AC techs are adding freon to a unit that cools intermittently they might be adding to the problem. An overcharged unit with a TXV would have trouble starting between cycles, and the compressor could be overloading and shutting itself off, thus the intermittent cooling. A lot of manufacturer's are leaving the option for a start kit with the contractor. And even then the right charge of refrigerant is still a must. Like the other comments, there are many factors involved with a problem like yours, and the short of it is, you really need a qualified technician. With the temperatures here in Jersey being below 65 degrees, you should wait till next spring to check the charge properly.
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Originally posted by John from Jersey: I have a York HVAC unit that will start off working fine (blowing cold air), then at times it will blow room temp air. It doesn't happen all the time. First HVAC tech thought it was a 'TVX' valve but told me to find a York expert, he checked everything else and added 1 pound of Freon. Second HVAC tech (York expert!) told me and replaced the outside fan motor. He said it was overheating and stopping. He replaced the motor for $600 but I still have the same exact problem. Now they don't want to have anything to do with it. They are the ones who installed it in the first place about 7 years ago. What should I do now? AND of course the season is coming to an end...
John, I respectfully disagree with waiting until next spring to have your repair made. I would suggest that you write a letter to the proprietor of the company that clearly overcharged you for a condenser motor. If you continue to get nowhere, I would suggest contacting York directly (I'm sure they have some consumer relations folks). I also would suggest contacting your local better business bureau. I personally feel that your contractor has done you a disservice.
Thanks for the info. I think I'm going to have to go down that path. Thanks John
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Originally posted by GaryMiller: John, I respectfully disagree with waiting until next spring to have your repair made. I would suggest that you write a letter to the proprietor of the company that clearly overcharged you for a condenser motor. If you continue to get nowhere, I would suggest contacting York directly (I'm sure they have some consumer relations folks). I also would suggest contacting your local better business bureau. I personally feel that your contractor has done you a disservice.
To answer your original question; I would suggest that the following be done and preferrably in order: 1. Verify correct air flow across indoor coil. 2.verify tgat condenser coil is clean. 3.verify that the expansion valve bulb is properly located,securely attached to vapor line and insulated. 4.Manufacturer's charging procedure is followed. 5.Expansion valve systems should be charged by sub-cooling method. 6.Once air flow and charge are proven, then superheat can be checked. (this will determine whether expansion valve is functioning properly) 7.I assume the refrigerant lines have already been inspected for restrictions. I sounds to me that you may indeed have an expansion valve problem. Since the compressor relies on cool refrigerant vapor to keep it grom overheating, a lack of refrigerant returning to the compresser may allow it to overheat and shut down on its internal protection device. This can be detected by unusually high superheat readings. Feel free to pass this information to your service tech.
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Originally posted by John from Jersey: Gary,
Thanks for the info. I think I'm going to have to go down that path. Thanks John
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Originally posted by GaryMiller: John, I respectfully disagree with waiting until next spring to have your repair made. I would suggest that you write a letter to the proprietor of the company that clearly overcharged you for a condenser motor. If you continue to get nowhere, I would suggest contacting York directly (I'm sure they have some consumer relations folks). I also would suggest contacting your local better business bureau. I personally feel that your contractor has done you a disservice.
Or if you want cold you could do what my wife did and turn on the A/C when it's 38 degrees and 99% humidity and freeze both coils up. I wouldn't recommend that. I'd go with Gary, he's on target
Yes, Gary is on target with your problem, however, He is from Southeast Georgia and checking all that stuff in late October is fine for his area, but not for Northeast Jersey. Service check on refrigerant for AC only (heat pumps are not common up here) are next to impossible at 40-50 degrees outside. Yes you should get back to the original service company, and communicate your problem, and give them an opportunity to make good on your money. And since you don't need the AC at this time of year, wait till the temperature reaches above 65 degrees to get a more accurate check on the charge. Also, you mentioned 10 SEER. Most 10 SEER AC systems do not use TXV, they mostly rely on Cap Tube type expansion. If there was a restriction in the expansion device, this would have been easily picked up by the tech from his pressure nd temperature readings. Again, like I mentioned in my first comment, you should have all these potential conditions checked by a qualified technican.
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Originally posted by John from Jersey: It's a York H2DH036506A SEER 10 I'm told. Not sure on the starting components. How do I tell? The tech made sure the freon was at spec for my unit. I guess one of my main questions now is, should I get my money back on the motor because that did not solve the problem? And should I get the whole unit replaced or just the condenser? Also, what would be a fair price for a whole outside unit?
quote:
Originally posted by Bill Koehler: Need to know what model, what SEER, and if you have starting components because if the AC techs are adding freon to a unit that cools intermittently they might be adding to the problem. An overcharged unit with a TXV would have trouble starting between cycles, and the compressor could be overloading and shutting itself off, thus the intermittent cooling. A lot of manufacturer's are leaving the option for a start kit with the contractor. And even then the right charge of refrigerant is still a must. Like the other comments, there are many factors involved with a problem like yours, and the short of it is, you really need a qualified technician. With the temperatures here in Jersey being below 65 degrees, you should wait till next spring to check the charge properly.
quote:
Originally posted by John from Jersey: I have a York HVAC unit that will start off working fine (blowing cold air), then at times it will blow room temp air. It doesn't happen all the time. First HVAC tech thought it was a 'TVX' valve but told me to find a York expert, he checked everything else and added 1 pound of Freon. Second HVAC tech (York expert!) told me and replaced the outside fan motor. He said it was overheating and stopping. He replaced the motor for $600 but I still have the same exact problem. Now they don't want to have anything to do with it. They are the ones who installed it in the first place about 7 years ago. What should I do now? AND of course the season is coming to an end...
