Originally Posted by BrewBeemer
Is that 10 amp contact rating a inductive or resistive one?
Compressors have a high inrush starting surge way above
the 4.3 amp running current.
This thing will handle both. There is a setting for using inductive loads. Here is an excerpt from the manual:
"4.5.2 On/off control mode
It is necessary for inductive loads such as motors, compressors, or solenoid
valves that do not like to take pulsed power. It works like a mechanical
thermostat. When the temperature passes the set point, the heater (or
cooler) will be turned off. When the temperature drops back to below the
hysteresis band (Hy) the heater will turn on again.
To use the On/off mode, set At=0. Then, set the Hy to the desired range
based on control precision requirements. Smaller Hy values result in tighter
temperature control, but also cause the on/off action to occur more
It may not be enough. Looks like it might be just over 10 AMPs on start. It also depends on the start kit installed on your fridge unit.
Is this a "Frost Free" fridge? If so, the defrost current is probably greater than the compressor running current. The AMP rating on the plate may indicate the draw of the defrost cycle as it is greater than the compressor run current. You might be able to get by with that PID. Disconnect the defrost cr@p. Any way you can get get a good measurement on the current draw?