The radio link carries the control signal from the immerSUN in the airing cupboard to the car charger in the detached garage. The control signal is generated either when the immerSUN has detected that a suitable surplus of PV electricity is available to want the car charger enabled or its output current increased; or when a timed boost is programmed in the immerSUN typically to do overnight charging on cheap rate Economy 7 power; or indeed when a manual boost is demand via the immerSUN front panel, app or web portal.
Fortunately lack of the control signal doesn’t prevent car charging as I can disable the integral PLC (which leaves the charger on continuously) and allow the car’s internal timer to control when the car charges.
This afternoon I’ve successfully re-paired the receiver to the transmitter to restore normal charger operation and uploaded my latest software to the PLC.
The capabilities of the charger are now as follows:
|Operating currents:||6, 10 and 16 Amps|
|Maximum continuous current (continuous grid load current):||10 Amps|
|Peak current (from PV + battery only):||16 Amps|
|Range switch interval:||6 minutes|
|Minimum on time:||10 minutes|
|Control signal watchdog (not during Economy 7 hours):||15 minutes|