Hi all,
I own a easysolar 2 gx. The temperature sensor that came with it is of by 10°C. Smart battery sense reads 9° while the wired one is reading -1 at lifepo4 battery terminals.
As I understand it the grid charger inside the easysolar can only use its own probe for low temp charging cutoff. Is this correct?
I would also like to see the correct temperature in VRM.
Any clues how this is possible or fix this?
Sounds broken.
A couple of things to check.
Check that the ferrules are fully inserted into the terminal block and the screws are tightened firmly (dont snap off the screws!).
You can also measure the voltage at the temp compensation terminals.
At 0c the voltage will be 2.73v. The voltage will deviate by 10mV/c.
Ie for a temp of 9c the voltage will rise by 90mV = 2.82v.
You can also use a Ruvi Tag (needs a GX with bluetooth) or SmartShunt/BMV 712 with a temp sensor.
Then use DVCC and STS to provide system wide battery temp data.
Just checked the voltage. Voltage is sort of good at t-sense terminal. 2.82 and its 11°. VenusOS says 4° now. In app and VRM portal. Rather weird 
Where is the t sense connected in the system?
The GX or the t sense terminals on the inverter?
On the Easysolar 2 GX t-sense terminal.
Ah ok. So not adjustable. It must be faulty
The terminal or whatever is reading the t-sense you mean?
If so, I’m not going to bother to get the whole unit replaced. Better use te battery sense of the smart shunt then. But another 30 euros.
But still, it must be possible to fix this in software. Hope devs see this
Is it known or published what kind of sensor vic uses ? Can anyone tell or link to?
Is MP2 and Smart Solar RS and easysolar equipped with the same type?
For the Cerbo, Quattro and Multiplus type sensor, type ASS000001000
see link below. The other types of sensor are different.
https://communityarchive.victronenergy.com/questions/211871/temperature-sensor-diy.html
…little bit sorry to say: not an article# but something like: ntc 10k or ptc 39k or pt 1000
in my victron-box i found 10k and 39k somone mentioned an active device (cant find it just now)
So can vic tell the kind of used sensors or where i can find it?
yes sensors can be defective but if voltage fits and cerbo missinterpretes: can we adjust it - and can i rename it? I wouldt like to see the t in my camping-mobile-house-place.
thanks: opi
ok I found it:
https://communityarchive.victronenergy.com/questions/211871/temperature-sensor-diy.html
Can I repeat my question: is it known or published which ntc ptc pt or active components (lm335) are used?
my easysolar 2gx suffers the same deviation as kaziges
Can I repeat my question: is it known or published which ntc ptc pt or active components (lm335) are used atthe different “machines” ?
my easysolar 2gx suffers the same deviation as kaziges
The EasySolar GX range contains a Multiplus and a GX device and a SmartSolar MPPT. The temperature sensor in the manual is connected to the Multiplus port the same as it would for a standard Multiplus and is connected to the battery negative post. All indications are that it is the type ASS000001000, which in the detailed linked post in an LM335 which I have confirmed because I have built several for my install as per the linked post.
However, the EasySolar manual does not specifically list the type, nor do the Victron docs for the temperature sensors list the Easysolar. Therefore, I am inferring it.