AssistantBrewer
Member
For those who have tried this and find that their compressor is cycling too frequently:
These electromechanical thermostats have a built-in hysteresis (temperature above the set point at which the compressor will cycle on vs temperature below the set point where it will then turn off). The hysteresis is what prevents the compressor from rapid cycling, which causes premature failure. Unfortunately with these electromechanical thermostats the amount of hysteresis is related to the set point of the thermostat in such a way that as set point temperature is increased hysteresis is decreased. The exact amount is dependent upon the individual thermostat design and to a lesser extent unit-to-unit variability. Hysteresis can usually be adjusted by disassembling the thermostat and bending a leaf spring, but doing so is beyond the typical DIYer.
Thus my recommendation is if you are running into rapid cycling by trying this technique I suggest you return the factory thermostat to its original setting and invest in an external controller.
AssistantBrewer
These electromechanical thermostats have a built-in hysteresis (temperature above the set point at which the compressor will cycle on vs temperature below the set point where it will then turn off). The hysteresis is what prevents the compressor from rapid cycling, which causes premature failure. Unfortunately with these electromechanical thermostats the amount of hysteresis is related to the set point of the thermostat in such a way that as set point temperature is increased hysteresis is decreased. The exact amount is dependent upon the individual thermostat design and to a lesser extent unit-to-unit variability. Hysteresis can usually be adjusted by disassembling the thermostat and bending a leaf spring, but doing so is beyond the typical DIYer.
Thus my recommendation is if you are running into rapid cycling by trying this technique I suggest you return the factory thermostat to its original setting and invest in an external controller.
AssistantBrewer