: Standard units typically feature 1–4 relays with load capacities often around 10A. Basic Programming & Setup Guide How to Choose a Fourtech Temperature Controller
Connect the positive (+) wire to the positive terminal and the negative (-) wire to the negative terminal. Reverse wiring will cause the display temperature to drop when the system heats up.
directly via . For specific series like the FC-040 , a dedicated Instruction Manual is also available. Quick Setup Guide (Universal Steps)
Sets the deadband range when using ON/OFF control mode. How to Run Auto-Tuning (PID Optimization) fourtech temperature controller manual free
Solution: Check all sensor wiring connections. Test the sensor continuity using a multimeter. Replace the sensor if it shows an infinite resistance reading.
Usually Terminals 1 and 2 (check for 110V vs 220V).
This mode functions like a household thermostat. The controller turns the heater 100% on when the temperature falls below the SV, and 100% off when it rises above it. : Standard units typically feature 1–4 relays with
Usually accept 24V DC/AC. Terminals are clearly marked with + (Positive) and - (Negative) polarities. Sensor Inputs (Thermocouples and RTDs)
| Model Prefix | Typical Use | Output Type | | :--- | :--- | :--- | | TC-4000 Series | Basic temperature control (ovens, kilns) | Relay or SSR driver | | TC-5000 Series | High precision, dual display (plastics, packaging) | 4-20mA or RS485 | | DY-2000 Series | Economy, single output | Relay only | | ITC-100VH | Very high temperature (up to 1800°C with B‑type TC) | SSR output |
: A 13-page technical document containing spare parts catalogues, interchangeable part details, and identification codes for Fourtech units is available on Scribd . directly via
If you have landed on this page, you are likely in one of two situations: You have just unboxed a brand new FourTech temperature controller and need to wire it immediately, or you have inherited a machine (an injection molder, a heat sealer, an oven, or a lab device) with a FourTech unit already installed—but the manual is long gone.
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.
Press . An "AT" light will likely begin to blink on the display.
Check the "Out" light. If the light is on but there’s no heat, your SSR or heating element might be blown.