Fourtech Temperature Controller Manual Verified Here

PID parameters are poorly matched, or the SSR/Relay output is stuck in the closed position.

Small lights indicate active outputs (OUT1, OUT2) and alarm states (ALM1, ALM2). Faceplate Keypad Functions fourtech temperature controller manual

What (Thermocouple or RTD) are you connecting to it? PID parameters are poorly matched, or the SSR/Relay