valerun
Well-known member
dsinned said:Old vers: V8.7.9 08:55 (2)
New ver: V8.9.1 08:55 (2,55) ; where the last two digits indicate an internal JB temperature of 55C, (or 131F).
As a side note, the way the new temperature management feature works, if an OTP (over temperature protection) condition occurs, when the internal temperature of the Arudino microcontroller exceeds 90C, the JB will suspend active charging for at least 10 minutes, thus preventing overheating. Conversely, if the temperature drops below -20C, a 6W heater energizes to try to keep the JB above freezing. Above -10C, the heater turns off.
To best of my knowledge, no other EVSE has implemented these feature!
Valery, is this correct?
Very observant... Yes, this is how it works. The feature is not fully precise yet hence the upper limit on temperature is so high (90C). In V8.9.2, we will have auto-calibration code that will calibrate the temp reading to room temp at first run and store that constant in EEPROM for life of the unit.