Så här förklaras det i manualen:
Function: The solar controller recognizes the excess capacity (LED "AES" is lighting). Then, the refrigerator switches from gas operation to 12 V operation. This mode will be kept for at least half an hour to avoid that the refrigerator will be "swinging" between 12 V operation and gas operation. Should the solar power be still sufficient, the 12 V operation of the refrigerator will be kept. Should the solar power be insufficient, "AES" will be switched-off by the solar controller, the refrigerator will be switched to gas operation, it will keep this mode for at least half an hour, and the solar power will be used for recharge of the (possibly slightly discharged) battery. This mode of operation can only be taken into account in case of sufficient efficiency of the solar panel and under favourable conditions, such as 110 Wp, better from 150 Wp or more. Optionally: Optionally, small 12 V consumers can be operated at the AES output, such as 12 V fans, car relays or refrigerators with control input D+ (Thetford etc.). For these applications, it must be observed, that the output must be active for at least half an hour. The output current of the terminal "AES" is 12 V, max. 0.2 A.
