Danfoss ERC 21 Series

3L, 4N
Sair
S5
Sc
DI1
DI2
Power supply 115 V AC or 230 V AC (refer to the controller label).
Control Sensor
Defrost (evaporator) sensor
Condenser sensor
Digital input - congurable to the functions listed under menu code o02.
Digital input - congurable to the functions listed under menu code o37.
Electric noise
Cables for sensors and DI inputs must be kept separate from other electric cables:
• Use separate cable trays
• Keep a distance between cables of at least 10 cm
• Long cables at the DI input should be avoided.
© Danfoss | Climate Solutions | 2023.01 BC194286421698en-000901 | 13
Electronic refrigeration control, type ERC 21X