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32 <br />Integrated Electronic <br /> Microprocessor Controller <br />Read And Save These Instructions - Page 1 of 3 <br />Programming The Instrument <br /> <br />To Modify The Setpoint <br /> <br /> <br />Press and hold the “SET” key for at least 1 second. <br /> <br />2. Use arrow keys ▲ ▼ on temperature <br />controller to increase (or decrease) the <br />setpoint. <br /> <br />3. Quickly press and release the “SET” key again. <br /> <br /> <br />To Modify Defrost, Differential, Other Parameters <br /> <br />1. Press & hold “Prg” & “SET” keys together <br />for five (5) seconds; display will flash “0”, <br />representing password prompt. <br /> <br />2. Confirm by pressing “SET” key. <br /> <br />3. Press ▲ or ▼ to reach the <br />category to be modified. <br /> <br /> <br />4. Press “SET” to modify this selected parameter. <br /> <br /> <br />5. Increase or decrease the value using <br />the ▲ or ▼ button respectively. <br /> <br /> <br />6. Press the “SET” key to temporarily save the new <br />value and return to the display of the parameter. <br /> <br />7. Press & hold the “Prg” key for at least 5 seconds <br />to save changes. This action will also mute the <br />audible alarm (buzzer) & deactivate the alarm relay. <br /> <br />Warning! Save Your Parameter Settings! <br /> <br />1. To store the new parameter values, PRESS and HOLD the “Prg” key for at least 5 seconds. <br />2. All modifications made to parameters will be lost if you do NOT press a button within 60 seconds. Should <br />this “timeout” occur, normal operational settings (prior to modifications being made) will resume. <br />3. If the instrument is switched off before pressing the “Prg” key, all modifications to parameters will be lost. <br />Set Set <br />▲ <br />aux <br />Prg <br />mute <br />def <br />▼ <br />Prg <br />mute Set <br />Set <br />def <br />▼ <br />Set <br />▲ aux <br />▲ aux def <br />▼ <br />Set <br />Prg <br />mute <br />Oper Manuals - PUB\Templates\Carel Controller\Carel Controller IR33.pub <br />This data derived from Carel Material: ir33 +030220441 - rel. 2.0 - 01.05.2006 <br />How To Change Reading From <br />Fahrenheit (°F) To Celsius (°C) <br /> <br /> <br />1. Press and hold “Prg” and “SET” keys <br />together for at least 5 seconds; display <br />will show “0” (password prompt). <br /> <br /> <br />2. Confirm by pressing “SET” key. <br /> <br /> <br />3. Press ▲ or ▼ until reaching the <br />parameter “/ 5”. <br /> <br />4. Press “SET” to modify this selected <br />parameter. <br /> <br /> <br />5. Press ▲ or ▼ to change value to <br />desired setting: “0” for Celsius (°C) or <br />“1” for Fahrenheit (°F). <br /> <br />6. Press “SET” key to temporarily save the <br />new value and return to the display of the <br />parameter. <br /> <br />7. Press & hold “Prg” key for at least 5 <br />seconds to save changes. Note! All values <br />will automatically convert to new scale. No <br />conversion is required. <br />Prg <br />mute Set <br />Set <br />def <br />▼ <br />▲ aux <br />Set <br />▲ aux def <br />▼ <br />Set <br />Prg <br />mute <br />Set <br />def <br />▼ <br />▲ aux <br />To Activate / Deactivate Auxiliary Output <br /> <br />Press and hold the “aux” key for 1 second. ▲ aux <br />To Activate Manual Defrost <br /> <br /> Press and hold “def” key for at least 5 seconds. <br />def <br />▼ <br />To Reset Any Alarms With Manual <br />Reset <br /> <br />Press and hold the “Prg” and “aux” <br /> key for at least 1 second. <br />▲ aux Prg <br />mute