Carrier 33MC-URC Installation Manual

Also see for 33MC-URC: Owner's manual

Contents

Carrier 33MC-URC Installation Manual Manual pdf 7 page image

7Unit ConfigurationItem Value Description20 1 : Heat pump Unit Configuration0 : AC Only (indoor unit with or without electric heaters) Defaults to Heat Pump21 1--- 199 in increments of 1CCN Address of the unitDefaults to 1To display the hundreds, icon ON/OFF is .22 0 –199 in increments of 1Zone number --- Communications zone the system is located inDefaults to 0To display the hundreds, icon ON/OFF is .24 0 : Start in Off Mode Auto Restart1 : Start in last mode Defaults to “On”This mode will exit automatically after 30 seconds of no buttonsbeing depressed.NOTE: If units are grouped to one Room Controller, all units willend up having the same configuration value.Service test modeThere is a hidden service test mode that is initiated through acombination of button presses when the remote is off. Thefollowing combination must be pressed within a 6 seconds period:DOWN--FAN--UP--FAN--MODEOnce in service test mode, the service test mode message will besent, and “Sr“ will be displayed in the temperature icons until the“DOWN“ button is pressed.During Service Test mode all the icons are off, the only button thatis active is the “DOWN” button.To cancel Service Test Mode, press the “DOWN“ button to send anormal message with “OFF“ mode.Service Test Mode automatically times out after 30 minutes and theremote will operate normally.S When test mode is selected, the unit will operate asdescribed below:⎯ The Unit Status (Green) and Timer (Yellow) LEDSblink every 2 seconds.⎯ The indoor fan will operate according touser--selected speed. If user selected speed is Auto,the fan will run in High speed.⎯ If the unit is configured as an A/C Only unit, it willoperate in cool mode with demand.S The louver will operate according to user--selectedposition. If user selected louver is Auto, louver operatesaccording to cool louver.⎯ If the unit is configured as a Heat Pump unit, thelouver will operate according to user--selectedposition. If user selected louver is Auto, louveroperates according to auto heat or cool louver basedon operating mode.The unit will run in cool mode for 3 minutes, then itwill run in heat mode for 2 minutes, or until theindoor coil is greater than 104_F. The unit will runin cool mode until test mode is exited.Any of the following will cancel the test Mode:S When the unit is turned off by the controller.S If the power is cycled during the Test Mode, the unit willreturn to its normal operating mode.S After 30 minutes of receiving the last valid test requestmessage.S Fail ModeTroubleshootingSymptom Possible Cause Things to check SolutionNo LCD display1) mis--- wiring of the 12 volt powerto Room Controller control.Verify that + 12 V and Ground are connected tothe proper terminals of the Controller.Reference Installation wiring section for correctconnectionsAfter disconnecting thepower, correct the wiringproblem and re--- cyclepower.2) Power not onlineCheck that the units main power is connected.The main control board should be operatingnormallyAfter verifying the wiringto the Room Controller,re--- cycle the unit power.3) No 12 volts between P and G ofterminal block.Check the installation of the J6 plug on themain control board.After disconnecting thepower, correct the wiringproblem and re--- cyclepower.+12 volts applied toRoom Controller atthe correct terminalsand still does notoperate1) The Room Controller is dam-aged.Change the Room Con-troller and re--- cycle pow-er.33MC-- URC

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