question

Hello,
You should only have 3 wires to connect to the terminal block. When using the temperature sensor then you will omit the single red wire that goes from B+ to the battery +. The red wire belonging to the temperature sensor takes the place of the single red wire.

What do the status LED's on the dongle say?
What firmware is on the Quattro?

Thanks for the super quick reply.

Quattro firmware: Just updated - 431

OK, I will remove the single red wire that goes from B+ to the battery +. May need to correct Step 4 in the manual. "

I'll write this response as I try changes.

LEDs:

With battery power and Quattro connected (RJ45 UTP cable) but no app connection, slow blinking blue light..

After connecting app to device, blue light is on and red light blinks slowly. After a few minutes it went fast alternating blinking (connecting).

Then, after 10 seconds, back to blue light is on and red light blinks slowly.

Then, after 30 seconds, back to slow blinking blue light only.

So, removed single red wire as suggested and back to blue light is on and red light blinks slowly. Then, after 30 seconds, back to slow blinking blue light only - according to manual this means operational but not connected (assuming connected to the app?).

I had the red and black connection wires connected to a bus bar, but since adding the temperature sensor ( ASS000100000 ) directly to a battery's positive + terminal and the black connection wire to a negative - terminal.

Then...

Replaced VE Bus Smart Dongle

Updated firmware

Dongle blue LED still slow blinking.

But then, changed phone (both new Samsung Android) and opened with VC app and got into Quattro. Dongle blue LED showing solid on. Red LED off. All good.

Now, switched back to original mobile phone and VC app and successfully connected to Quattro with temp readings. All good too!

Tried disconnecting the Quattro to see the dongle operate as a temp and voltage sensor only, but appears that it cannot in this power configuration because there is no LED lights after disconnecting the Quattro.

To check, connected original VE Bus Smart Dongle back into system and successfully connected to dongle and Quattro via VC app with new mobile phone.

But when I disconnected and went back to original mobile phone and original dongle I hit the connection problems again.

So in conclusion, I have replaced the VE BUS Smart Dongle so that I have a more reliable connection to the VC app on both mobile phones. All good.

Thank you very much for your assistance with the original power wire question.