Introduction; Variants; Applications; Key Features - Danfoss EET Series User Manual

Refrigeration controller, type EET series

Introduction

The EET Series is the next generation of Electronic Thermostats which is a direct replacement of the Mechanical
Thermostat (and timer) and Danfoss ETC series. It comes in two variants: EETc (Enhanced Electronic Thermostat,
compact) which has one and two output model options for controlling compressor and fan/defrost heater and EETa
(Enhanced Electronic Thermostat, advanced) which has two and three output model options for controlling
compressor, fan, defrost heater or light. With the EETc and the EETa, we continue building on the electronification
legacy by bringing a high number of new features and capabilities to increase performance and flexibility, while
keeping the familiar form factor and installation method.

Variants

EET Compact (EETc):
• EETc 11: 1 output, 120 V
• EETc 12: 1 output, 230 V
• EETc 21: 2 outputs, 120 V
• EETc 22: 2 outputs, 230 V
EET Advanced (EETa):
• EETa 2W: 2 outputs, wide voltage (100 – 240 V)
• EETa 3W: 3 outputs, wide voltage (100 – 240 V)

Applications

• Glass door merchandisers
• Beverage coolers
• Commercial freezers and refrigerators
• Preparation tables, under counters
• Dual compressor refrigerators (EETa only)
• Anti-freeze applications requiring auto heat control (EETa only)
• Applications requiring dual defrost control (EETa only)

Key features

Table 1: Key features
Key features
Common interface for easy transition from ETC series and Mechanical Thermostat
Moisture protected design for cold space installation
Zero cross technology for longer relay life
Compressor protection from voltage fluctuations.
Compressor protection from condenser overheat
Advanced fan control
Economy mode (Eco mode) for energy saving
Initial pull down for faster cooling at power up.
Test mode for quick checking of output function
Emergency mode in case of sensor and potentiometer failure
Parameter programmable at production site with direct programming key access
Refrigerant leakage detection
Wide Voltage Power supply
Holiday mode for energy saving
Dual evaporator defrost
Dual compressor control
Automatic Pull down for faster cooling
Anti-freeze function for low ambient conditions
Onsite firmware update capability
© Danfoss | Climate Solutions | 2023.07
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