Introduction
Application
ERC 21X is a smart multipurpose refrigeration controller designed to fulfill today’s requirement of commercial
refrigeration applications. This controller is suitable for high, medium and low temperature applications with
natural, electrical and hot gas defrost compatibilities.
Typical applications include Glass door merchandisers, commercial fridges and freezers, cold rooms and various
other commercial refrigeration applications.
General description
ERC 21X controller comes with four push buttons, a big display, easy and intuitive menu structure and pre-defined
applications ensure ease of use. Controller is loaded with energy efficiency features like smart evaporator fan
management, night mode and defrosts on demand features.
High capacity 16 A relay enable direct connection of heavy loads without use of intermediate relay: up to 2 hp
compressors depending on its power factor and motor efficiency (power factor greater than 0.65 for 230 V and
greater than 0.85 for 115 V).
Safe operation of the unit is ensured through voltage protection, zero cross switching and high condenser
temperature protection features.
ERC 21X series
Three version of ERC 21X is available in both 230 V AC, 50/60HZ and 115 V AC, 60Hz.
• ERC 211: single relay output for refrigeration and heating applications.
• ERC 213: three relays outputs for ventilated refrigeration and heating applications.
• ERC 214: four relays outputs for ventilated refrigeration and heating applications.
ERC 211
ERC 211 has one relay output and two inputs (1 analogue, 1 analogue/digital). This controller can be used for either
cooling or heating applications.
© Danfoss | Climate Solutions | 2023.01
BC194286421698en-000901 | 5
Electronic refrigeration control, type ERC 21X