Universal No-Frost Refrigerator Defrost Timer.
Part No. RF100U, ZET-2A.
Defrost timer which has a variable interval time from 4 hours to 12 hours and a variable defrost time from 4 minutes to 35 minutes.
Includes rear mounted pushbutton to select defrost cycle or run cycle for testing purposes. This allows either cycle to be selected manually, which would normally be done on a standard timer by turning the knob.
4 X 6.4mm spade terminals.
Suits most no frost refrigerators.
Note, does not suit defrost circuits where the timer motor doesn't receive power all the time.
Pin 1, switch common and one side of timer power (usually active).
Pin 2, normally open switch contact (for defrost element circuit).
Pin 3, other side of timer power (usually neutral).
Pin 4, normall closed swich contact (for compressor circuit).
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