Heez
Heez Series • Refrigeration Controller
Quick Info
Output Functions
Easy-to-use controller with colored LED status
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 3 |
| Buttons | 3 |
| LED Indicators | Status (RGB), Compressor, Defrost |
Power Supply
| Voltage | 230V AC |
| Voltage Range | 100-240V AC |
| Frequency | 50/60Hz |
| Power Consumption | 3VA |
Sensor Inputs
| Probe Inputs | 2 |
| Probe Type | NTC 10K |
| Temp Range | -50 to 90°C |
| Accuracy | ±0.5°C |
Relay Outputs
| Relay Outputs | 3 |
| Relay Rating | 8A/250VAC |
Physical
| Panel Size | 71x29 mm |
| Depth | 60 mm |
| IP Rating | IP65 (front) |
| Weight | 80 g |
Operating Conditions
| Operating Temp | -10 to 55°C |
| Storage Temp | -25 to 70°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| L | Power L | Input |
brown
|
| N | Power N | Input |
blue
|
| B1 | Room Probe | Input |
red/white
|
| B2 | Evap Probe | Input |
red/white
|
| K1 | Compressor | Output |
black
|
| K2 | Defrost | Output |
black
|
| K3 | Fan | 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 |
| rd | Differential | 0.1 to 20 | 2 °C | Control band |
| d0 | Defrost Type | 0-3 | 1 | 0=Off, 1=Electric, 2=Gas, 3=Off-cycle |
| d3 | Defrost Interval | 0 to 24 | 8 h | Hours between |
| d4 | Max Defrost | 1 to 120 | 30 min | Maximum time |
| F0 | Fan Mode | 0-2 | 1 | 0=Off, 1=On, 2=With comp |
| AL | Alarm Setpoint | 0 to 50 | 10 °C | High temp alarm offset |
Error Codes
Solution: Check B1 wiring
Solution: Check B2 wiring
Solution: Temperature above SP+AL
Solution: Check heater
Frequently Asked Questions
Green=Normal, Red=Alarm, Blue=Defrost
Use Carel APPLICA app on smartphone
Alternative Models (Cross Reference)
Manufacturer Information
Brand: Carel
Country: Italy