1.3.1|  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.
Outputs:
 – Relay 1: compressor/solenoid valve control or simple 
heater in case of heating application Inputs.
Inputs:
 – Input1: cabinet/control sensor (Sair).
 – Input 2: condenser sensor or digital inputs which can 
be configured for various functions as mentioned under 
menu code o02.
1.3.2|  ERC 213
ERC 213 has three relays outputs and four inputs 
(2 analogues, 1 analogue/digital, 1 digital) for cooling 
applications.
Outputs:
 – Relay 1: compressor/solenoid valve control.
 – Relay 2: can be configured either defrost or external alarm.
 – Relay 3: fan control.
Inputs:
 – Input 1: cabinet/control sensor (Sair).
 – Input 2: defrost sensor (S5).
 – Input 3 : condenser sensor (Sc) or digital input which can 
be configured to various functions as mentioned under 
menu code “o02”.
 – Input 4: digital input which can be configured to various 
functions as mentioned under menu code “o37”
1.3.3|  ERC 214
ERC 214 has four relays outputs and four inputs (2 analogue, 
1 analogue/digital, 1 digital) for cooling applications.
Outputs:
 – Relay 1: compressor/solenoid valve control.
 – Relay 2: defrost control.
 – Relay 3: fan control.
 – Relay 4 : this can be configured for either light or external 
alarm.
Inputs:
 – Input 1: cabinet/control sensor (Sair).
 – Input 2: defrost sensor (S5).
 – Input 3 : condenser sensor (Sc) or digital input which can 
be configured to various functions as metioned under 
menu code “o02”.
 – Input4: digital input which can be configured for various 
functions as mentioned under menu code “o37”.
Sair
Sc
DO1
Sair
Sc
DI1
DI2
DO2
DO3
DO1
S5
Sair
Sc
DI1
DI2
DO4
DO2
DO3
DO1
S5
1.3|  ERC 21X Series
Three version of ERC 21X is available in both 230 V / 50/60 Hz and 115 V / 60 Hz.
 – ERC 211: single relay output for refrigeration and heating applications.
 – ERC 213: three relays outputs for ventilated refrigeration applications.
 – ERC 214: four relays outputs for ventilated refrigeration applications.