As I've disclosed in other forums during my recent flurry of activity, I'm readying my house for sale. One of the items on my list is fixing the A/C which has been leaking freon (Yes, I'm to blame for the hole in the ozone, but the system was probably leaking before I bought the house and I haven't used it in a couple of years. Please forgive me.) Five years ago, a certified tech sold me a charge and the subject of repairing didn't come up. Two years ago, when he came back and sold me a recharge, if memory serves, he used a sniffer to find the leak. I do know that he wanted to replace the inside coil, but his father was going to have to look up a price and when he left a message a week or two later, I never got around to returning his call. Last year, once again it was out of freon, but since it was a relatively cool summer, I just bought a couple of window units and for the rest of the house, I used the big attic fan. Now I'm readying the house for sale and have to cover myself for the disclosure forms. As I see it, I have three options. I could replace the leaking coil with one that runs R-22; I could replace whatever is necessary to convert the system to R410 or I could disclose that the system needs to be upgraded. As I was scheduling the appointment for the repair person to come -- apparently the person whose call I didn't return two years ago isn't returning mine, so I've started with the company that sold the system, though it has changed hands -- I asked the scheduler about their supply of parts. She said that depending on whether "it's a TRV or a piston" to convert the old system, they had some on hand. Hopefully, some of you nice people in this forum would be willing to help educate me on what to listen or watch for in my conversation with the technician and anything I should read in advance. I have found some threads, but most of them are more about whether it's cost effective to upgrade instead of repair. Though I've been living here for six years, I'm gone in two weeks. Upgrading isn't really an investment to me. My goal is to get the system working in the least wasteful way possible in time to sell. (I'm also planning to withhold the whole moving thing from the tech unless they're insistent on trying to sell me a complete new system, then my plan would be to couch it as bird-in-the-hand) Thanks for any and all help. ETA: The outside unit is a Carrier, if that helps.

Hello Community, I’m hoping someone will be able to help me with this. Here we go. We have an American Standards Allegiance 14 Air Conditioner. Model No.: 2A7A4060B1000AA, 208/230 volts, PH 1, 60 Hz, 34.0 A, Compressor Motor 25 RLA @208/230V, O.D. Motor 2.80 FLA @200/230V. It started having intermittent trouble. Sometimes we’d turn on the AC at the thermostat and could hear the inside fan start up, but it would only circulate room temperature air. I noticed that the outside unit – the compressor and fan – was not turning on. At first, I could turn the thermostat off and then back on again and the outside unit would kick on, and we’d have cool air. However, the threat remained that the unit would not kick back on once the thermostat stopped the unit at the desired temperature and attempted to start it back up. Eventually, the outside unit stopped coming on at all. This was at the end of the summer last year. It appears that finally, the AC unit (outside) will not come on at all. Whatever was going out must have finally gone out. I did some testing already. I tested the thermostat to make sure it was supplying the necessary 24 volts consistently, and it is at the thermostat. I even jumped it to make sure that we didn’t have a bad thermostat, and still no joy. The outside unit would not kick on even with voltage coming from the hot-wired thermostat. I opened up the electronic section and discovered that the relay switch was not closing and making contact. I tested the voltage there, and it was not the 24 volts it should be. However, there seems to be a safety design in that the coil on the relay is not wired directly from the house but rather indirectly off of other components inside the unit. At first, this seemed to point to a bad thermostat except that I had bypassed the thermostat and directly connected the wiring to supply the voltage. This meant it had to be something else. I decided to manually compress the relay switch and supply power. Once I did this, I noticed that the compressor kicked on, but the blower fan did not (I did this with the power off and turned the power on after making sure the relay was pressed). I immediately terminated power and pulled the fuses to the AC unit so as not to burn out the compressor. This seems to suggest a problem with the fan. Upon visual inspection, I did not notice any bulging capacitors. There are two. It appears that one is for the compressor and the other for the fan. They are connected to what appears to be a hard start relay of some kind. At this point, I’m not sure if I have a bad starter cap, a bad hard start relay switch, or a bad fan motor or something in the fan assembly such as the switchboard or whatever it is that controls the fan motor. I have not taken it apart to check any of that yet. I was looking around for replacement parts. However, it seems hard to find replacement parts for this unit. The capacitor that I think is for the fan is the following: 21A101147P03 135-162 MFD 330 VAC 50/60 Hz T-Max 65 degrees C The other capacitor that I think is for the compressor is the following: 27L322 80 MFD 50/60 Hz GE Capacitor The start capacitor relay 3arr22j24n4 I think this belongs to the RLY02711 (I am not positive), but I mainly seem to be able to find the RLY01869 online. The fan motor: 5SME39HL with the addition of HY71 in big letters. I can find 5SME39HL motors but they usually do not end with HY71. It appears to me that somewhere in this range of parts is the culprit assuming there is no problem with wiring. I have yet to check these things. However, before I do, I wanted to get an idea of the price of replacement parts. After a lot of checking around online, I found it hard to find many of the parts that I need. Some are labeled obsolete. Others seem to have similar parts, but I do not know what is safe to use or not. I’m not worried about the capacitors as I have been able to find suitable replacements for them. The fan motor seems to be another story. My question is what parts would be safe to use as a replacement for these parts if they should turn out to be the culprit? For example, I can find 5SME39HL motors, but I can’t find HY71 exactly. I have found HY62 and HY73 for example. If I needed to buy a replacement fan motor, would one of these work with the existing circuitry? Does the HY71 part of the model number even matter when looking for a replacement fan motor? Is the 5SME39HL part of the model number the only part to worry about (ex. 5SME39HL HY62 versus 5SME39HL HY71 versus 5SME39HL HY73, etc.)? Would I have to replace anything else in order to make it work? What about the start capacitor relay? I don’t know exactly which one to get. The only meaningful number I was able to pull off of it was 3arr22j24n4. Google seems to lead to the above mentioned start capacitor relays, but again, I don’t know which ones I can actually use. I’m a little out of my depth on this. If I could find the exact same parts, I could make the changes pretty easily. But when it comes to using different parts (even if only slightly), I don’t know enough to know how safe that would be with the other existing components or what other components would need to be changed to accommodate the new component. Another thing I read or saw somewhere was that it may not be the fan motor. Instead, it may be the board that controls the fan motor. There’s information on testing the control module as well as the motor using a tool that I do not have (TECMate). Any help would be appreciated. Can I safely use a 5SME39HL motor with something other than HY71 on the end? Can I replace the 3arr22j24n4 with the RLY02711 or the RLY01869? Will the “new” (or used since new seems hard to find for some of these parts) motor already have a control module in it? Thanks in advance.