EKC 204A1
EKC Series • Refrigeration Controller
Quick Info
Output Functions
Display case controller with night setback and energy saving
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 4 |
| Buttons | 4 |
| LED Indicators | Compressor, Defrost, Fan, Light, Alarm |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 100-240V AC |
| Frequency | 50/60Hz |
| Power Consumption | 5VA |
Sensor Inputs
| Probe Inputs | 3 |
| Probe Type | NTC/PTC/PT1000 |
| Temp Range | -60 to 150°C |
| Accuracy | ±0.3°C |
Relay Outputs
| Relay Outputs | 4 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 71.5x28.5 mm |
| Depth | 65 mm |
| IP Rating | IP65 (front) |
| Weight | 130 g |
Operating Conditions
| Operating Temp | -25 to 55°C |
| Storage Temp | -40 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| L | Power L | Input |
brown
|
| N | Power N | Input |
blue
|
| S1 | Air Sensor | Input |
red/white
|
| S2 | Evap Sensor | Input |
red/white
|
| S3 | Product Sensor | Input |
red/white
|
| DI1 | Door Switch | Input |
gray
|
| DI2 | Night Signal | Input |
gray
|
| K1 | Relay 1 (Comp) | Output |
black
|
| K2 | Relay 2 (Defrost) | Output |
orange
|
| K3 | Relay 3 (Fan) | Output |
green
|
| K4 | Relay 4 (Light) | Output |
yellow
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| r01 | Setpoint | -60 to 150 | 2 °C | Temperature setpoint |
| r02 | Differential | 0.1 to 20 | 2 °C | Switching differential |
| r06 | Night Setpoint | -60 to 150 | 0 °C | Night setback setpoint |
| r07 | Night Enable | 0=Off, 1=On | 0 | Night setback mode |
| d01 | Defrost Type | 0-3 | 1 | Defrost method |
| d02 | Defrost End | 0 to 25 | 6 °C | Termination temp |
| d03 | Max Defrost | 0 to 180 | 30 min | Maximum duration |
| d04 | Defrost Interval | 0 to 48 | 8 hr | Time between |
| L01 | Light Mode | 0=Off, 1=On, 2=Auto | 2 | Light control |
| L02 | Light On Time | 00:00 to 23:59 | 08:00 | Light on schedule |
| L03 | Light Off Time | 00:00 to 23:59 | 22:00 | Light off schedule |
Error Codes
Solution: Check S1 sensor
Solution: Check S2 sensor
Solution: Check S3 sensor
Solution: Close door
Solution: Check system
Frequently Asked Questions
Set r07=1 and configure r06 for night setpoint
Use L01 for mode, L02/L03 for schedule times
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Danfoss
Country: Denmark