1. Introduzione
The Elitech ETC-3000A is a digital temperature controller designed for precise temperature management in various applications requiring cooling, defrosting, and fan control. This manual provides detailed instructions for the safe installation, operation, and maintenance of the device.
Key features include stable and reliable performance, electromagnetic compatibility (EMC) approval, limited input value to prevent misoperation, easy parameter setting via copy card, and multiple defrosting and fan management options.

Figura 1: Fronte view of the Elitech ETC-3000A Digital Temperature Controller, showing the digital display and control buttons.
2. Informazioni sulla sicurezza
Please read and understand all safety instructions before installing or operating the ETC-3000A controller. Failure to follow these instructions may result in electric shock, fire, or damage to the device.
- Garantire l'alimentazione voltage corrisponde ai requisiti del controller (110 V CA).
- Installation and wiring should be performed by qualified personnel.
- Scollegare l'alimentazione prima di effettuare qualsiasi cablaggio o manutenzione.
- Non utilizzare il controller in ambienti con eccessiva umidità, polvere o gas corrosivi.
- Evitare di esporre il dispositivo alla luce solare diretta o a temperature estreme.
3. Prodotto finitoview
3.1 Componenti e display
The ETC-3000A features a clear digital display, control buttons, and various input/output terminals.

Figura 2: primo piano view of the ETC-3000A display, showing temperature reading and control buttons (SET, Up, Down/Defrost).
The display shows the current temperature. Indicators for cooling, defrosting, and fan operation are also present.
3.2 Dimensioni

Figure 3: Dimensions of the ETC-3000A controller, indicating its physical size for installation planning.
The controller has a compact design suitable for panel mounting.
4. Configurazione e installazione
4.1 Schema elettrico
Proper wiring is crucial for the safe and correct operation of the ETC-3000A. Refer to the diagram below for connection details.

Figure 4: Wiring diagram for the ETC-3000A, showing connections for power, compressor, defrosting, fan, room temperature probe, and defrost probe.
- Terminali 1-4: Output relays for Co-point, Compressor, Defrosting, and Fan.
- Terminali 5-6: 110V AC Power input.
- Terminali 7-8: Room temperature probe input.
- Terminali 8-9: Defrost probe input.
- Copy Key: Port for parameter copy card.
Warning: Ensure all connections are secure and insulated. Incorrect wiring can cause damage or electrical hazards.
4.2 Installazione della sonda
Install the room temperature probe in the area where temperature needs to be controlled. The defrost probe should be placed on the evaporator coil to monitor defrosting cycles.

Figure 5: The ETC-3000A controller shown with its temperature probes and instruction manual.
5. Istruzioni per l'uso
5.1 Funzionamento di base
Once powered on, the controller will display the current temperature. The ETC-3000A supports cooling, defrosting, and fan control modes.

Figure 6: The ETC-3000A controller illustrating its primary functions: Cooling, Defrost, Fan, and Copy Card capability.
5.2 Impostazione dei parametri
To enter parameter setting mode, press and hold the IMPOSTATO pulsante per 3 secondi. Utilizzare il Up E Giù pulsanti per navigare tra i parametri e regolare i valori. Premere IMPOSTATO nuovamente per confermare e uscire.
I parametri comuni includono:
- Temperature Setpoint (SP): La temperatura desiderata.
- Temperature Hysteresis (H): The difference between the setpoint and the temperature at which the compressor restarts.
- Defrost Cycle (dF): Frequency or duration of defrost cycles.
- Fan Control (FC): Settings related to fan operation.
Refer to the full parameter list in the included manual for detailed descriptions and adjustment ranges.
5.3 Copy Card Function
The ETC-3000A supports parameter copying using a copy card. This allows for quick and consistent configuration of multiple units.
- To copy parameters da il controllore A a copy card: Insert the copy card, then press and hold a specific button combination (refer to the detailed manual).
- To copy parameters da a copy card A the controller: Insert the copy card, then press and hold a specific button combination (refer to the detailed manual).
6. Manutenzione
Regular maintenance ensures optimal performance and longevity of your ETC-3000A controller.
- Pulizia: Pulisci il display e casing con un panno morbido e asciutto. Non utilizzare detergenti abrasivi o solventi.
- Ispezione della sonda: Periodically check temperature probes for damage or corrosion. Ensure they are securely installed.
- Controllo del cablaggio: Verify that all wiring connections remain secure and free from damage.
Caution: Always disconnect power before cleaning or inspecting the controller.
7. Risoluzione Dei Problemi
This section addresses common issues you might encounter with the ETC-3000A controller.
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Display shows "P1" | Room temperature probe error. | Check the connection of the room temperature probe. Replace if damaged. |
| Display shows "HA" | Allarme alta temperatura. | Check cooling system operation. Verify temperature setpoints and hysteresis. |
| Display shows "Er" | Errore di sistema. | Power cycle the device. If the error persists, contact technical support. |
| Il controller non si accende | Nessuna alimentazione o cablaggio errato. | Check power connections and ensure 110V AC supply. Verify wiring according to the diagram. |
| Lettura della temperatura imprecisa | Faulty probe or incorrect probe placement. | Check probe connection and placement. Test or replace the probe if necessary. |



Figura 7: Esamples of error codes displayed on the ETC-3000A: P1 (probe error), HA (high temperature alarm), and Er (system error).
8. Specifiche
| Parametro | Valore |
|---|---|
| Modello | ETC-3000A |
| Alimentazione elettrica | 110 V CA |
| Campo di misurazione della temperatura | -45°C to 120°C (Refer to full manual for exact range) |
| Intervallo di temperatura di controllo | -40°C to 110°C (Refer to full manual for exact range) |
| Risoluzione | 0.1°C |
| Tipo di sensore | NTC |
| Output Relay Capacity | 8A for Compressor, Defrosting, Fan |
| Dimensioni | Approx. 3.35" x 1.36" x 2.95" (W x H x D) |
9. Garanzia e supporto
Elitech provides a limited warranty for the ETC-3000A Digital Temperature Controller. Please refer to the warranty card included with your product or visit the official Elitech websito per termini e condizioni di garanzia dettagliati.
For technical support, troubleshooting assistance, or service inquiries, please contact Elitech customer service through their official channels. When contacting support, please have your product model (ETC-3000A) and purchase information ready.
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