Hello. We have a 3-story house. On first floor, there are 3 LG mini-splits that share an exterior compressor (?), and the 2nd floor has 4 units, the 3rd floor (just one large room) has one unit, and floors 2 and 3 share an exterior compressor.
A month ago, the third-floor unit began dripping and that was fixed. Then the fan motor began making a noise, and the unit directly below on the 2nd floor stopped cooling (at about 20% of normal). Tech came and tested coil upstairs for leak, and said one was found, that this is keeping coolant from reaching the 2nd-floor unit.
Q1. Other 3 units on 2nd floor, all far distant to one not cooling, are cooling fine (or anyway at more like 90% of expected). If the issue is that the coil leak on floor 3 is keeping coolant from flowing through the loop to other units, why is only one — the closest one to the leaking coil unit — doing so badly with cooling?
Q2. Tech says that the refrigerant used by this generation/line of LG ductless A/Cs (installed 2016) will be discontinued in the coming year so next time there is another unit that goes out, we will be looking at replacing entire system (or at least all the units on its compressor). Is this true?
The cost of installing a new coil and fan motor on the single 3rd-floor unit is expensive, about 10% of the cost of replacing the entire system … is it worth spending 10% if these are so old (out of warranty) and (apparently) obsolete? That is, should we just replace the whole thing now?
Thank you so much for any insight, opinion.
A month ago, the third-floor unit began dripping and that was fixed. Then the fan motor began making a noise, and the unit directly below on the 2nd floor stopped cooling (at about 20% of normal). Tech came and tested coil upstairs for leak, and said one was found, that this is keeping coolant from reaching the 2nd-floor unit.
Q1. Other 3 units on 2nd floor, all far distant to one not cooling, are cooling fine (or anyway at more like 90% of expected). If the issue is that the coil leak on floor 3 is keeping coolant from flowing through the loop to other units, why is only one — the closest one to the leaking coil unit — doing so badly with cooling?
Q2. Tech says that the refrigerant used by this generation/line of LG ductless A/Cs (installed 2016) will be discontinued in the coming year so next time there is another unit that goes out, we will be looking at replacing entire system (or at least all the units on its compressor). Is this true?
The cost of installing a new coil and fan motor on the single 3rd-floor unit is expensive, about 10% of the cost of replacing the entire system … is it worth spending 10% if these are so old (out of warranty) and (apparently) obsolete? That is, should we just replace the whole thing now?
Thank you so much for any insight, opinion.
source https://hvac-talk.com/vbb/threads/2243977-LG-Mini-Split-Question?goto=newpost
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