mechanical control fridge

there are a lot of fridges in the world.
made by major brands, local make and import.
some % of electricity in house is consumed by those fridges.
it works 24 hours 365days.
we should minimize this consumtion.
we can not do much for muc control model but mechanical control fridge.

sequence of mechanical control fridge is as follows;-
compressor in side of fridge run to cool down in side and when the room temperature reaches the setting temperature of thermostat, compressor stops.
every 6-8 houses timer run the defrost heater to defrost on the evaporator coil and start to run compressor and so on.
flowchart and typical wiring diagram is as attached.

in case of electric control, you should consider pressure balance in refrigeration circuit otherwise overload protector of compressor trips off the compressor or fuse or circuit breaker trips off in the house.
if sequence is smooth, consumption of electricity is lower.

I huck my mechanical fridge to electric control and simulate and optimiaze sequence,
if you try it by yourself, it will be at your own risk and there will will be containing electric shock .

next  mcu control fridge simulate this mechanical control, which was well designed long time ago and will working now.