ON-OFF/UP+AUX/DOWN: if pressed together for more than 3 seconds, activates/deactivates the continuous cycle;. ON-OFF/UP+ SET/DEF: if pressed fileslib. Low temperature with set point variation using real time To prevent damage to the controller, Carel recommend installing an auxiliary relay when. The Carel IR33S thermostat comes set up as a refrigeration thermostat, in degrees Celsius, with 30- minute defrost period every 8 hours. The following step by
Press and hold the “SET” key for at least 1 second. 2. Use arrow keys △ ▽ on temperature controller to increase (or decrease) the setpoint. 3. Quickly
View and Download Carel IR33 operating instructions online. AS A THERMOMETER ONLY. CAREL IR33 thermostat pdf manual download.