| Code | Meaning | Solution | | :--- | :--- | :--- | | | Probe 1 faulty / shorted | Check wiring on terminals 9-10. Replace probe (NTC 10k@25°C or PTC 1k). | | E2 | Probe 2 faulty (Evaporator) | Check terminals 11-12. Defrost may run on time-only (MDf) – energy waste. | | E3 | Probe 3 faulty | Optional probe; check wiring if configured as alarm input. | | HA | High temperature alarm | Temperature above "ALc" (High alarm) for time > "ALd". Check refrigeration circuit. | | LA | Low temperature alarm | Temperature below "ALL" (Low alarm). Possible evaporator fan stuck ON or refrigerant floodback. | | dA | Door open alarm | Digital input 1 active for > "dod" time. Close door or check door switch (magnets). | | nt | Network timeout (TelevisSystem) | Controller is addressed but lost communication with BMS. Check RS485 wiring. | | EE | EEPROM failure | Internal memory corrupt. Cycle power. If persists, replace controller. |
Eliwell has prioritized usability. The interface features:
| Parameter | Specification | | :--- | :--- | | | 115-230VAC ±10%, 50/60Hz (or 24VAC/VDC on some SKUs) | | Power Consumption | 3.5 VA max | | Display | 3-digit, red LED, 14.2 mm high (+ auxiliary icons) | | Inputs | 2 or 3 NTC/PTC probe inputs (configurable) | | Digital Inputs | 2 free-voltage contacts (configurable) | | Relay Outputs | Compressor (SPST 16A), Defrost (SPST 8A), Fan (SPST 5A) | | Ambient Temp | -5°C to +55°C (operating); -20°C to +70°C (storage) | | Protection Rating | IP65 front panel (washdown safe); IP20 rear case | | Connectivity | TTL port for copy card or TelevisSystem (BMS) |
The is a specialized series of controllers engineered specifically for managing machine rooms within complex refrigeration systems. Acting as a central "brain," this device coordinates both the compression and condensation phases, ensuring that multiple units—ranging from single-stage to multi-stage compressors of varying capacities—operate in harmony with condenser fans. Advanced Control and Flexibility
: Programmable for 4–20 mA pressure transducers or NTC temperature probes.
integrates several advanced features to enhance system reliability and performance: