Rhagymadrodd
The COMPUTHERM E280 Wi-Fi Thermostat allows you to control connected heating or cooling devices, such as boilers or air conditioning systems, via your smartphone or tablet over the internet. This thermostat is compatible with any two-wire thermostatic connector and supports both 24V and 230V control circuits. It is particularly useful for managing heating/cooling in homes, apartments, or holiday residences, especially when occupancy schedules are irregular.
Equipped with a connectable floor temperature sensor, the E280 is ideal for controlling underfloor heating systems. It features two potential-free relays that can operate simultaneously, allowing independent control of two devices. This enables the thermostat to manage a pump and a zone valve in addition to the main boiler, facilitating multi-zone heating systems without requiring a separate zone control system.

Image: The Computherm E280 Wi-Fi Thermostat displaying room temperature and set temperature, alongside a smartphone showing the thermostat's control application.
Cynnwys Pecyn
Wrth agor y pecyn, gwiriwch fod yr holl gydrannau yn bresennol ac yn ddi-fwlch.
- Computherm E280 Wi-Fi Thermostat unit
- Synhwyrydd tymheredd llawr
- Sgriwiau mowntio a phlygiau wal
- Llawlyfr Defnyddiwr (y ddogfen hon)

Image: The Computherm E280 thermostat, its floor sensor, mounting hardware, and printed user manuals as found in the product packaging.
Gosod a Gosod
Pwysig: Installation should only be performed by a qualified electrician or heating engineer. Ensure the main power supply is disconnected before commencing any wiring.
1. Gosod y Thermostat
- Choose a suitable location on an interior wall, away from direct sunlight, drafts, or heat sources, at approximately 1.5 meters (5 feet) from the floor.
- Carefully separate the front panel from the backplate of the thermostat.
- Mark the drilling points on the wall using the backplate as a template.
- Drill holes, insert wall plugs, and secure the backplate to the wall using the provided screws.
2. Gwifrau Cysylltiadau
The Computherm E280 features two potential-free relays (K1 and K2) for controlling heating/cooling systems and an optional floor sensor.

Delwedd: Y cefn view of the Computherm E280 thermostat, detailing the terminal block for electrical connections, including power input, relay outputs (K1 and K2), and the floor sensor input.
- Cyflenwad Pŵer (L, N): Connect the live (L) and neutral (N) wires of your 230V AC power supply.
- Relay K1 (COM, NO, NC): This relay is typically used for controlling the main heating/cooling device (e.g., boiler).
- COM: Common terminal.
- NAC OES: Normally Open (connect to this for heating applications where the circuit closes to activate).
- NC: Normally Closed (connect to this for cooling applications where the circuit opens to activate).
- Relay K2 (COM, NO): This relay can be used for an auxiliary device, such as a pump or zone valve.
- COM: Common terminal.
- NAC OES: Ar agor fel arfer.
- Synhwyrydd Llawr: Connect the wires from the external floor temperature sensor to the designated terminals.
3. Cymanfa Derfynol
- Once wiring is complete and secure, carefully reattach the front panel of the thermostat to the backplate.
- Restore power to the system. The thermostat display should illuminate.
Cyfarwyddiadau Gweithredu
The Computherm E280 can be operated directly via its touch buttons or remotely via the dedicated smartphone application.
1. Initial Power-On and Wi-Fi Connection
- After power-on, the thermostat will display the current room temperature and default settings.
- Download the "Computherm" or "Smart Life" app from your smartphone's app store (iOS or Android).
- Follow the in-app instructions to add a new device and connect your E280 thermostat to your 2.4 GHz Wi-Fi network. This typically involves putting the thermostat into pairing mode (refer to the app or thermostat's quick start guide for specific button presses).
2. Basic Thermostat Functions (On-Device)

Delwedd: Manwl view of the Computherm E280 thermostat's digital display, showing current room temperature, set temperature, day, and time, along with the touch-sensitive control buttons below the screen.
- Botwm Pŵer (⏻): Pwyswch i droi'r thermostat ymlaen neu i ffwrdd.
- Botwm Modd (↻): Cycle through operating modes (e.g., Heating, Cooling, Auto, Manual).
- Botwm Gosod (⏱): Access settings or programming menus.
- Saethau i Fyny/I Lawr (▲ / ▼): Adjust temperature setpoints or navigate menu options.
3. Remote Control via Smartphone App
The smartphone app provides comprehensive control and monitoring capabilities:

Image: A smartphone screen displaying the advanced settings interface of the Computherm E280 thermostat app, showing options like sensor mode, temperature differentials, and antifreeze settings.
- Addasiad Tymheredd: Easily change the set temperature from anywhere.
- Amserlennu: Create and modify weekly heating/cooling schedules.
- Dewis Modd: Switch between heating, cooling, and manual modes.
- Gosodiadau Uwch: Configure parameters such as temperature calibration, switching sensitivity, floor sensor limits, and antifreeze protection.
- Monitro: View current room and floor temperatures, operating status, and historical data.
Cynnal a chadw
The Computherm E280 thermostat requires minimal maintenance to ensure optimal performance.
- Glanhau: Wipe the thermostat's display and casing with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or chemical sprays, as these can damage the surface or internal components.
- Gwiriad Synhwyrydd: Periodically ensure that the internal and external (floor) temperature sensors are free from obstructions or debris that could affect accurate readings.
- Diweddariadau Meddalwedd: Keep the smartphone application updated to the latest version to benefit from new features and performance improvements. The thermostat's firmware may also receive updates via the app.
Datrys problemau
If you encounter issues with your Computherm E280 thermostat, refer to the following common problems and solutions:
| Problem | Achos Posibl | Ateb |
|---|---|---|
| Mae'r arddangosfa thermostat yn wag. | Dim cyflenwad pŵer. | Check circuit breaker and wiring connections. Ensure power is restored. |
| Methu cysylltu â Wi-Fi. | Cyfrinair Wi-Fi anghywir, rhwydwaith 5GHz, neu signal gwan. | Verify Wi-Fi password. Ensure you are connecting to a 2.4 GHz network. Move thermostat closer to router or use a Wi-Fi extender. Restart thermostat and router. |
| Nid yw'r system Gwresogi/Oeri yn ymateb. | Incorrect wiring, system turned off, or thermostat in wrong mode. | Check wiring connections (refer to Setup section). Ensure heating/cooling system is powered on. Verify thermostat is in the correct operating mode (e.g., Heating). |
| Darlleniadau tymheredd anghywir. | Sensor obstruction, thermostat location, or calibration issue. | Ensure sensors are clear. Relocate thermostat if exposed to drafts/direct sunlight. Check app for temperature calibration options. |
If the problem persists, please contact Computherm customer support.
Manylebau
| Nodwedd | Manylyn |
|---|---|
| Brand | CYFRIFIADUR |
| Rhif Model | E280 |
| Lliw | Gwyn |
| Deunydd | Plastig |
| Dimensiynau Cynnyrch (L x W x H) | 1.7 x 8.6 x 8.6 cm |
| Pwysau Eitem | 370 gram |
| Cyftage | 240 Volts AC (max. 24V DC / 240V AC for relays) |
| Ffynhonnell Pwer | Trydan Corded |
| Technoleg Cysylltedd | Wi-Fi (b/g/n) 2.4 GHz |
| Temperature Measurement Range (Internal) | 0 °C - 50 °C (0.1 °C increments) |
| Temperature Measurement Range (Floor Sensor) | 0 °C - 99 °C (0.1 °C increments) |
| Cywirdeb Mesur Tymheredd | ± 0.5 °C |
| Amrediad Tymheredd Addasadwy | 5 °C - 99 °C (0.5 °C increments) |
| Sensitifrwydd Newid | ± 0.1 °C to ± 1.0 °C (0.1 °C increments) |
| Switchable Current (K1) | 8A (2A inductive load) |
| Switchable Current (K2) | 3A (1A inductive load) |
| Heat Sensor Type (Internal & Floor) | NTC 3950K 10kΩ at 25°C |
| Nodweddion Arbennig | Programmable, Wi-Fi Control, Floor Sensor Included |
| Defnyddiau Penodol | Radiator, Underfloor Heating |
Gwarant a Chefnogaeth
The Computherm E280 Wi-Fi Thermostat comes with a Gwarant 2 mlynedd o ddyddiad y pryniant. Mae'r warant hon yn cwmpasu diffygion gweithgynhyrchu a chamweithrediadau o dan ddefnydd arferol. Cadwch eich prawf prynu ar gyfer hawliadau gwarant.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or visit the official Computherm websafle ar gyfer gwybodaeth cyswllt.