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Daikin VRV III eating compressors.....

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5.1K views 4 replies 3 participants last post by  Juan Madera  
#1 ·
Unit ran fine for 7 years until the original compressor grounded out. Compressor and inverter board replaced, ran for two months and grounded out again. System was then pressure/leak tested with no leaks found and piping was also inspected. Installed another compressor and board (tech reused refrigerant), ran for two more months and grounded out AGAIN. Contractor can't say if its electrical or mechanical failure even though a service checker was hooked up for 24 hours.
Meanwhile we have paid each time for labor and now they suggest to put another compressor and board in with a dryer and take oil sample from recent compressor. Of course we have to pay AGAIN to have this work done.
Time to blow money elsewhere with another "daikin dealer" and hope for a better result?
Current contractor claims the compressors are being covered under warranty but I can't imagine why Daikin would trust a company that is now going on a third compressor in six months?
 
#2 ·
You only mention one drier. Is that the only one they changed? Did they ever check for acid after the first burn out?
 
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#4 ·
I am not familiar with Daikin procedures for their VRV systems but most manufacturers require a filer change with a burnout (grounded compressor) and most compressors that go to ground create acid. It makes me wonder if they used proper clean up procedures. That is not to say they did anything wrong, it just throws up a flag.
 
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#5 ·
Do you have a surge suppressor on the unit or a whole house unit on the breaker panel? Hint, hint...
 
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