Carel
µC2
µC2 Series • Refrigeration Controller
Quick Info
Type
Refrigeration
Application
Bottle Cooler
Probe Inputs
1
Relay Outputs
1
Panel Size
28.5x71 mm
Output Functions
R1
Compressor
Ultra-compact microcontroller for simple refrigeration
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 3 |
| Buttons | 2 |
| LED Indicators | Compressor, Defrost |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 100-240V AC |
| Frequency | 50/60Hz |
| Power Consumption | 2VA |
Sensor Inputs
| Probe Inputs | 1 |
| Probe Type | NTC 10K |
| Temp Range | -50 to 90°C |
| Accuracy | ±0.5°C |
Relay Outputs
| Relay Outputs | 1 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 28.5x71 mm |
| Depth | 56 mm |
| IP Rating | IP65 (front) |
| Weight | 50 g |
Operating Conditions
| Operating Temp | -5 to 55°C |
| Storage Temp | -20 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| 1 | Power L | Input |
brown
|
| 2 | Power N | Input |
blue
|
| 3 | Probe + | Input |
red
|
| 4 | Probe - | Input |
white
|
| 5 | Relay COM | Output |
black
|
| 6 | Relay NO | Output |
black
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| SP | Setpoint | -50 to 90 | 5 °C | Temperature setpoint |
| dF | Differential | 0.1 to 20 | 2 °C | Control band |
| LS | Low Limit | -50 to SP | -50 °C | Min setpoint |
| HS | High Limit | SP to 90 | 90 °C | Max setpoint |
| CA | Calibration | -10 to 10 | 0 °C | Probe offset |
| HC | Heat/Cool | 0-1 | 0 | 0=Cool, 1=Heat |
Error Codes
E1
Probe error
Solution: Check NTC wiring
Hi
High temp
Solution: Temperature above limit
Lo
Low temp
Solution: Temperature below limit
Frequently Asked Questions
Micro C2, smallest Carel controller for basic applications
No, µC2 is single relay. Use µC3 for defrost output
Alternative Models (Cross Reference)
PJEZS0H000
Dixell XR01CX
Eliwell IC 901
Manufacturer Information
Brand: Carel
Country: Italy