Have setup a solar inverter to run a small fridge. Not wanting my large inverter to be running full time draining power, I have disconnected the wires to the thermostat, utilised the input/output with 12vdc to control 2 relays.
RL1 = inverter on/off function
RL2 = power to a larger SSR (pictured)
SSR = 230v to the compressor.
RL2 is a small Chinese time on delay board in the pic. Means the inverter can have time to come up to voltage prior to the fridge powering on. Only problem, and is apparent in both boards I have here is I can hear the relay cycling, clicking rapidly off/on.........................off/on....... Occasionally this is evident on the LED on the SSR.
First thought is the fridge thermostat is designed for 230vac and the 12vdc I am running though it is only just making enough to make the relay but I have 13.1vdc on the input to the relay. So am unsure why.
Any ideas? I was thinking I might put a cap accross the input to RL2. ??
RL1 = inverter on/off function
RL2 = power to a larger SSR (pictured)
SSR = 230v to the compressor.
RL2 is a small Chinese time on delay board in the pic. Means the inverter can have time to come up to voltage prior to the fridge powering on. Only problem, and is apparent in both boards I have here is I can hear the relay cycling, clicking rapidly off/on.........................off/on....... Occasionally this is evident on the LED on the SSR.
First thought is the fridge thermostat is designed for 230vac and the 12vdc I am running though it is only just making enough to make the relay but I have 13.1vdc on the input to the relay. So am unsure why.
Any ideas? I was thinking I might put a cap accross the input to RL2. ??
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