Fourtech Temperature Controller Manual [work] Free Instant
The built-in Auto-Tune function automatically calculates the perfect PID variables for your specific thermal mass. Bring your system close to ambient temperature. Enter the parameter menu and find the AT or unt parameter. Change the value from oFF to on .
Fourtech controllers are highly versatile and support multiple sensor types. You must configure the hardware terminals based on your sensor choice:
The or machinery you are trying to control.
: Ensure the "INP1" parameter matches the physical sensor type (e.g., K-type thermocouple). fourtech temperature controller manual free
| Error Code | Description | Likely Cause & Solution | | :--- | :--- | :--- | | | Ignition failure | No gas supply, defective ignition electrode, or no flame detected. Check gas valve, reset boiler, and call a technician if persists. | | E02 | Overtemperature safety thermostat triggered | Overheating due to circulation pump failure or air in system. Check pump operation. | | E03 | Flue/Draught thermostat/pressure switch error | Flue gas recirculation, blocked flue, or fan issue. Contact technician to inspect flue and fan. | | E04 | Frequent flame loss error | Unstable flame due to gas pressure issues, incorrect burner settings, or flue problems. | | E05 | Faulty heating circuit temperature sensor | NTC sensor (measuring heating circuit water temperature) faulty or damaged. Replace sensor. | | E06 | Faulty DHW temperature sensor | NTC sensor (measuring domestic hot water) faulty or damaged. Replace sensor. | | E10 | Low system water pressure | Heating system water pressure below ~0.5 bar. Open filling loop to repressurize to 1.2-1.5 bar. | | E25/E26 | No water circulation (pump blocked) | Central heating pump seized or blocked. Call technician to check pump. | | E35 | Parasitic flame error (false flame) | Flame detected at wrong time. Check ionization electrode and main PCB. | | E96 | Undervoltage error (power supply) | Mains supply voltage dip below specified minimum. Check house electrical system. | | E98 | General ignition block | Unclear cause, often board-related. Reset boiler; if frequent, technician must investigate. | | E99 | Internal board error or gas valve relay | Internal PCB fault or gas valve relay contact issues. Often requires board replacement. |
: They are often cited as a high-quality, cost-effective alternative to premium industrial brands. Cons :
The Fourtech temperature controller is a robust tool once you understand the menu logic. By utilizing the feature and ensuring your input type matches your physical sensor, you can achieve professional-grade thermal stability. Change the value from oFF to on
85–265V AC, 50/60 Hz (Select low-voltage models operate on 24V AC/DC). Input Types (Configurable): Thermocouples (Type K, J, R, S, T, E). RTD sensors (Pt100, Cu50). Linear inputs (4-20mA, 0-5V, 0-10V).
The actual temperature is lower than the controller's minimum limit, or the sensor wires are reversed. Internal EEPROM Error
: Connect your thermocouple (J or K type) or RTD (Pt100) sensor to the designated input pins (often terminals 1 and 2, or 18 and 19 for specific models). Output (Relay/SSR) : Connect your load to the Normally Open (NO) : Ensure the "INP1" parameter matches the physical
The type of you are trying to connect (Thermocouple or RTD).
Press and hold for 3 seconds to lock in your sensor type. 5. How to Run the PID Auto-Tuning Cycle
Q: What is the input range of the Fourtech temperature controller? A: The input range is -200 to 1800°C, dependent on sensor type.
The controller is not receiving a signal from the sensor. Check for a broken thermocouple wire, a loose connection at the terminal block, or an incorrect InP setting in the menu.