Weird issue I’m having. I recently got a warranty replacement for my 3 year old Doorbell Pro due to the front glass cracking all over.
My original set up was this:
16v 30va Transformer > directly connected to Doorbell Pro (No powerkit inline)
This set up never had an issue up until the new replacement came. I shut off the breaker, plugged in the new doorbell, turned breaker back on. The new doorbell needed to be internally charged before powering on so I let it do it’s thing for a couple hours. Once booted, I set it up and everything is fine. The next day, the doorbell is offline. Turns out, the transformer was no longer outputting power. Doing a search online and asking someone who has the doorbell, they informed me their 1 year old doorbell pro required a powerkit. I saw this Power Kit v2 box in the box and thought… Why would I need this if my old doorbell worked all these years without one??? So I figured they must’ve changed how these things were built some how.
I put in the power kit v2 inline as the following setup, I do not have an mechanical chime:
Transformer Wire1> Power Kit v2 via Bypass ports > Doorbell
Transformer Wire2> Doorbell
Did the whole set up and everything worked fine. The next day or two, I again find the doorbell offline. At this point I blamed it on maybe the brand of transformer just sucked or a defective product. I went to Home Depot and returned the transformer and got a replacement one of the same brand. Same thing happens! So I went on Amazon and bought the NuTone C907 16v 30va transformer like my original one. AGAIN! The same thing happened. Dumbfounded, I tested the wires for Continuity with my multimeter to see if theres a short somewhere… NADA. So I contacted Ring and figured the replacement Doorbell Pro was faulty. They sent me a 2nd replacement Doorbell Pro.
I went and bought my 3rd replacement transformer and plugged in my ORIGINAL doorbell pro and it stayed on for a week. At this point I was so sure that the 2nd replacement Doorbell Pro would work now. So I went ahead and plugged in the new replacement doorbell into the new setup with the power kit v2 in line, and the next day, BAM! The 2nd replacement Doorbell Pro killed my transformer. So now I’m lost and waiting for my 4th transformer to come (that’s ~$80 down the drain already!). Before I do anything else, I was hoping someone could give me some insight as to what in the world could be wrong. I feel like the wiring is very straight forward when connecting directly to transformer so what could possibly be wrong???
List of some background info:
Every test, the wires behind the doorbell read 16-17v
Every test, in the app the power showed 4.0? and showed good power
Signal on wifi isnt an issue
Power source is grounded
Lights that are connected to the same junction box has no issues
3 year old Doorbell Pro does not burn out transformer, only the new replacement units
Thank you for your time.