GHA: Would you mind making sure that this is the correct bulletin # from Carrier. I would love to discuss this with the dealer who worked on my heat pump. When I went over to pay him for replacing the TXV, I said to him that the heat pump worked fine until they came to do the general maintenance on it. Like I said in my post they washed the condenser and added a smidgen of 410A. Next time I turned on the heat pump it didn't work properly anymore. Also when I went to pay him he said that I should have got the extended warranty and it wouldn't have cost me a cent to fix the TXV. I said that I guess I should have, although, being a Carrier I thought I was getting the best, and being assured it would be installed properly, I didn't think I would have any problems for a long time.After all, I have owned three refridgerators in my life and never had any problems, and I have a 1989 Olds Touring sedan and the air conditioner has neve been touched.The heat pump is only 3 years old. What I think is going on is, the dealers anticipalte that most buyers will purchase the extended warranty and then they don't have to worry about a real good installation as Carrier will pay on the extended warranty for any problems down the road. Would a poor install have showed up before 3 years?
Originally posted by gha
This particular unit is well known to me. Carrier has issued a bulletin recently for that TXV. 410 SHOULD NOT be topped up as it is a blended gas and depending on the leak will leak out at different rates causing a host of other problems in the future. The rate he charged to fix the TXV sounds pretty good. As for the tech that was unsure, there are some guys that just don't see heat pumps.The best way to charge it is by subcooling or superheat. Here in Canada we have to account for every ounce of R22 and 410 that we reclaim or use. So it gets weighed either way. In Canada you have to be a licensed HVAC technician with an ODP card to get your hands on 22 or 410, so reclaiming and filling with new 410 (if there was a leak) as a DIY project is not really an option.