Once clicked, the compressor should stop, and the defrost heater should begin to warm up.
| SU8109 Pin | Connect to | |------------|-------------| | 1 (L1) | Black (hot) | | 2 | Not used | | 3 (Compressor NC) | Compressor relay wire | | 4 (Defrost NO) | Defrost heater wire | | 5 (Motor) | Neutral (white) | | 7 (Common) | Not needed if using pin 5 for neutral |
The "Normally Open" (NO) contact. Every 6–8 hours, the timer switches power here for about 20–30 minutes to activate the defrost heater The Defrost Circuit Chain Power from Terminal 2
AC Power Cord (Black) (White) | | | | [Term 1] [Term 2] <-- Defrost Timer | | (Internal switch rotates) | | (Always Hot) Neutral | | Internal Cam | / \ | / \ | [Term 3] [Term 4] | | | | | | | Blue Wire Brown Wire | | | Compressor Heater-| | | | | (Defrost Thermostat) | | +------------+-----> AC Neutral (via Term 2)
