Carrier 40KQM012 Installation Manual

Contents

40KQMGB - 14Address selector and fault codeAddress selectorIf you are installing two indoor units in the same room and you wantthem to operate in independent mode, it is necessary to assigneach unit its own address so that each unit can operate via its ownremote control.For configuration, proceed as follows:Configuration (of the unit)• Press the and buttons of the infrared remote control andhold them pressed for more than 5 seconds.• The display will be cleared, the time segments will display thefirst configuration item (rAdr = remote address) and thetemperature segments will display the default value of thisconfiguration item (Ab = control of both indoor units).• Press either the or button to change the default value (Ab)to the new value (A) or (b).• Press button repeatedly until “UAdr” is displayed.• Press either the or button to change the default value ofCCN unit address (1) to the new value (1÷240).• Press button repeatedly until “ZONE” is displayed.• Press either the or button to change the default value ofZone number (0) to the new value (0÷240).• Press button repeatedly until “A St” is displayed.• Press either the or button to change the default value ofauto restart in last mode (On) to the new value of start in OFFmode (OF).• LOOK OUT!Whichever configuration value changed must be transmittedto the indoor unit pressing button each time.• Press button to leave the configuration menu.Configuration (of the remote controller)• Press the and buttons of the infrared remote control andhold them pressed for more than 5 seconds.• The display will be cleared, the temperature segments willdisplay the first configuration item (CH = remote address) andthe time segments will display the default value of thisconfiguration item (Ab = control of both indoor units).• Press either the or button to change the default value (Ab)to the new value (A) or (b).• Press button repeatedly until “tU” is displayed.• Press either the or button to change the default value oftemperatures in Degrees Celsius (C) to the new value DegreesFahrenheit (°F).• Press button repeatedly until “Hr” is displayed.• Press either the or button to change the default value ofMaximum heating set point temperature admitted in DegreesCelsius (32) or Degrees Fahrenheit (90) to the new valueDegrees Celsius (17÷32) or Degrees Fahrenheit (63÷90).• Press button repeatedly until “Cr” is displayed.• Press either the or button to change the default value ofminimum cooling set point temperature admitted in DegreesCelsius (17) or Degrees Fahrenheit (63) to the new value DegreesCelsius (17÷32) or Degrees Fahrenheit (63÷90).• Press botton repeatedly until “CL” is displayed.• Press either the or button to change the default value ofTime format as AM/PM (12) to the new value of 24 hours timeformat (24).• LOOK OUT!Whichever configuration value changed must be confirmedpressing button each time.• Press button to leave the configuration menu.Note:When 30 seconds have elapsed and no buttons have beenpressed, the remote control will automatically exit theconfiguration menu and the procedure has to be restarted.Fault codeThe inside unit can detect any system fault and stop it at once.The failure is recoverable based on the table VI below.When a diagnostic is active, the green LED (P) and the yellowLED (R) blink 0.1 seconds on, 0.1 seconds off and indicate a faultcode.The yellow LED (R) indicates the tens digits.The green LED (P) indicates the unit digits.Two seconds elapse between the yellow LED and the green LEDlighting.The sequence ends with both LEDs off for 4 seconds.Example:Fault code 12• The yellow LED blinks (it indicates the tens digits).• Both LEDS are off for 2 seconds.• The green LED blinks twice with a 0,5 seconds frequency.• Both LEDS are off for 4 seconds.The fault sequence described above is repeated until the fault hasbeen repaired.If the fault code is lower than 10, the yellow LED (R) is notblinking.Table VICode Description2 Condensate Pump Failure or water drain Failure3 Indoor unit Room Air sensor fault4 Indoor unit Tc Coil sensor fault10 Indoor unit software fault (EEProm Corrupt)12 Indoor unit software fault (Address / Zone Corrupt)14 Loss of Signal From CDU15 Indoor unit Tcj Coil sensor fault18 Outdoor unit control box fault (G-Tr short circuit protection)20 Position Detection Circuit Error21 Outdoor unit Current Sensor fault22 Outdoor unit Heat Exchange Sensor fault23 Outdoor unit Discharge Temperature Sensor fault24 Outdoor unit Fan fault26 Other Outdoor unit fault27 Outdoor unit Compressor Lock28 Outdoor unit Discharge Temperature fault29 Outdoor unit Compressor Breakdown31 Outdoor unit High Temperature/Pressure ReleaseIn case of malfunction, record the fault code, turn the system off,disconnect the mains power supply and contact a qualified serviceengineer.