Fridge Timer TMDE706CS

Description

Product Description: Sankyo Type TMDE706SC Refrigerator Defrost TimerThe TMDE706SC is a genuine factory-standard or high-grade universal electro-mechanical defrost timer assembly. It utilizes a miniature internal synchronous motor linked to a heavy-duty plastic internal reduction gear train that steadily rotates a master cam mechanism.This model functions as the central scheduler for “No-Frost” appliances, running a cycle that automatically halts cooling operations every few hours to safely switch high-voltage current down to the defrost heater circuit. This regular pause ensures that accumulation on the internal cooling coils is melted away cleanly before ice blocks the internal air vents.Key Technical FeaturesElectrical Rating: Standard AC 200V–240V operating frequency ($50text{Hz}/60text{Hz}$).Pin Arrangement: Standard inline 4-Pin layout (labeled left-to-right as Pins 1, 2, 3, and 4).Internal Motor Layout: This follows the Pin 1-3 Configuration (Standard Asian/Japanese wiring profile). The internal clock motor bridges across Pin 1 and Pin 3 to draw its functional power.Cycle Calibration: Calibrated for a 6-hour and 35-minute active compressor run loop, followed by a 25-minute active defrost termination cycle.Terminal Configuration & Mechanical Wiring CompatibilityBecause it follows the standard Pin 1-3 wiring architecture, the TMDE706SC must match the wire orientation of your refrigerator’s internal electrical schematic block:1. Terminal Mapping BreakdownPin 3 (Common/Live Input): Connects to the primary incoming hot line feeding from the wall socket or safety thermostat.Pin 1 (Neutral Line Return): Connects to the main neutral circuit. Together with Pin 3, this supplies continuous power to keep the internal clock motor spinning.Pin 4 (Compressor Output): Routes power directly to the compressor starter relay and the forced-air evaporator fan during the 6.5-hour cooling phase.Pin 2 (Defrost Heater Output): Routes power to the internal heating elements and inline bimetal safety switch when the timer transitions into its 25-minute defrost window.2. Compatible Appliance Brands & MechanismsThis timer framework is universally applicable across a vast layout of double-door or multi-door frost-free refrigeration platforms:Primary Brand Matching: Widely integrated as an OEM or drop-in service standard for LG, Samsung, Toshiba, Sharp, Hitachi, and Sanyo double-door refrigerators.3. Fixed-Speed Hermetic AC Compressors & Thermal LoopsCompatible Sub-Systems: Standard single-phase 220V–240V induction compressors, 220V skeleton-frame fan motors, and glass/aluminum defrost heating loops. (Note: If you attempt to use this to replace an old American-style timer that uses a Pin 1-4 motor configuration, the terminal wires in the harness must be physically swapped, or the clock motor will stall out indefinitely once it enters a defrost cycle).4. Direct Cross-Compatible Replacement ModelsIn the global appliance repair trade, the TMDE706SC can serve as a direct functional alternative for multiple overlapping parts:Interchangeable Models: TMDE706SC, TMDE706SA1, TMDF702ZD1, TMDE807G1, and generic Sankyo 4-pin 1-3 timers with matching timing specifications.