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bradley-thompson avatar image
bradley-thompson asked

BMV-712 Temp Sensor not working

For the life of me, I cannot get the temp sensor to work on my BMV-712. Years ago, I ordered the sensor from AM Solar and installed it only to not get any reading in the VictronConnect app. I called AM Solar and they advised that the circuit board of the BMV shunt was most likely to blame (they claimed that the temp sensor is very unlikely to be faulty). They shipped a new board, I installed it, and still no temp readings. I gave up.

Fast forward to my new install and I ordered a new temp sensor just in case. The old one still didn't work. The new one arrived and even has the yellow sticker stating "For BMV 702/712 ONLY" on it. Still doesn't work.

I've set the Aux input to Temperature and applied a temp coefficient of 1.1%cap/degF. The BMV otherwise functions correctly.

Am I doing something wrong?

Temperature Sensor
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1 Answer
klim8skeptic avatar image
klim8skeptic answered ·
@Bradley Thompson There are a couple of things to check, before you chuck..

Have a good look at the RJ12 sockets on the board, and the BMV. Check that none of the wire contacts are broken, bent out of shape, or the socket is not clogged up with fluff.

Lastly check the RJ12 cable for damage, or replace it. It is a standard RJ12 6P6C used with old telephones.

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bradley-thompson avatar image bradley-thompson commented ·
Thank you. I should have done this before. I used a small brush to remove a barely visible piece of dirt from the cable connector. It works. Imagine that.
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