The PV display will show "SP" or the digits on the SV display will start flashing. Use the , ↓down arrow , and ↑up arrow keys to set your desired temperature. Press SET again to confirm. Menu Structure (Parameter Setting)
The sensor is disconnected, broken, or incorrectly wired. Check thermocouple polarity. fourtech temperature controller manual
Relay output (5A/250V AC), SSR drive (12V DC, 30mA), or Analog current/voltage (4-20mA, 0-10V). The PV display will show "SP" or the
Proper installation requires understanding the physical boundaries and electrical layout of your device. Always disconnect the main power source before attempting any wiring procedures. Physical Dimensions SSR drive (12V DC