Sonovagun Split AC installer purged lines instead of pulling a vacuum. Need advice!
Hi everyone, I am based in Spain and could really use some advice.
A few days ago, I had 3 mini-splits installed.
After he finished installing the first unit, I asked him if he had pulled a vacuum. He admitted that he hadn't and just "purged" the lines, but said he would use the vacuum pump for the remaining two units now that I had brought it up.
When I questioned him about the first machine not being vacuumed, he got defensive: "I have 30 years of experience, what are you going to tell me?" He then added, "Look, I can just pull the gas out now, pull a vacuum, and put the gas back in."
He claimed that since the refrigerant is hermetically sealed, no new gas was needed. I accepted this at the time because I didn't know enough about the subject to argue.
To make matters worse, on one of the units where he did use the pump, I am afraid he only ran it for 15 min. I am afraid, could not be the case, but I am afraid.
Anyway, I've been reading up on this online for the past couple of days, and it turns out this is a massive screw-up.
What can I do to fix this? Am I screwed? I've already paid him, but I haven't signed the fluorinated gas certificate yet (which is a legal requirement here).
I saw that the correct fix for the first unit is to recover the contaminated gas, pull a vacuum, and put in a brand-new virgin charge. I decided to reach out to him in writing.
TLDR using AI, cause I sent out a long message: I know your "purge and reuse" method contaminated the system with air and moisture, which voids the Daikin warranty and risks ruining the compressor. I am refusing to sign the legally required gas certificate and will report you to Consumer Affairs and the Department of Industry unless you come back to fix it properly: recover the contaminated gas, pull a deep vacuum, and weigh in a brand-new charge of virgin R32 refrigerant.
Thanks.