Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

35Table 11 -- Menu Structure* (cont)Menu ParameterParameterDefaultValueParameterRange and Increment[ EXPANDED PARAMETER NAMENotesALARMS(#) Alarms display only when they are active. The menu title“ALARMS(#)” includes the number of active alarms in parenthesis ( ).When using S---Bus sensors, “SYLK” will appear on the screen, andwhen using 20k OA temperature sensors, “SENS T” will appear onthe screen.MA T SENS ERR n/a n/a SUPPLY AIR TEMPERATURE SENSOR ERRORSupply air sensor has failed or become disconnected --- check wiringthen replace sensor if the alarm continuesCO2 SENS ERR n/a n/a CO2 SENSOR ERRORCO2 sensor has failed, gone out of range or become disconnected ---check wiring then replace sensor if the alarm continuesOA SYLK T ERR n/a n/a OUTSIDE AIR S---BUS SENSOR ERROROutside air enthalpy sensor has failed or become disconnected --- checkwiring then replace sensor if the alarm continuesOA SYLK H ERR n/a n/aRA SYLK T ERR n/a n/a RETURN AIR S---BUS SENSOR ERRORReturn air enthalpy sensor has failed or become disconnected --- checkwiring then replace sensor if the alarm continuesRA SYLK H ERR n/a n/aDA SYLK T ERR n/a n/a DISCHARGE AIR S---BUS SENSOR ERRORDischarge air sensor has failed or become disconnected --- check wiringthen replace sensor if the alarm continuesOA SENS T ERR n/a n/a OUTSIDE AIR TEMPERATURE SENSOR ERROROutside air temperature sensor has failed or become disconnected ---check wiring then replace sensor if the alarm continuesACT ERROR n/a n/a ACTUATOR ERRORActuator has failed or become disconnected --- check for stall, overvoltage, under voltage and actuator count. Replace actuator if damper ismoveable and supply voltage is between 21.6 V and26.4 V. Check actuator count on STATUS menu.FREEZE ALARM n/a n/a Check if outdoor temperature is below the LOW Temp Lockout onsetpoint menu. Check if Mixed air temperature on STATUS menu isbelow the Lo Setpoint on Advanced setup menu. When conditions areback in normal range then the alarm will go away.SHUTDOWN ACTIVE n/a n/a AUX2 IN is programmed for SHUTDOWN and 24 V has been applied toAUX 2IN terminalDMP CAL RUNNING n/a n/a DAMPER CALIBRATION ROUTINE RUNNINGIf DCV Auto enable has been programmed, when the W7220 iscompleting a calibration on the dampers, this alarm will display. Wait untilthe calibration is completed and the alarm will go away. Must have OA,MA and RA sensors for DCV calibration; set up is in the Advanced setupmenu.DA SENS ALM n/a n/a DISCHARGE AIR TEMPERATURE SENSOR ALARMDischarge air temperature is out of the range set in the ADVANCEDSETUP Menu. Check the temperature of the discharge air.SYS ALARM n/a n/a When AUX1---O is set to SYS and there is any alarm (e.g., failed sensors,etc.), the AUX1---O terminal has 24 Vac out.ACT UNDER V n/a n/a ACTUATOR VOLTAGE LOWVoltage received at actuator is below expected rangeACT OVER V n/a n/a ACTUATOR VOLTAGE HIGHVoltage received at actuator is above expected rangeACT STALLED n/a n/a ACTUATOR STALLEDActuator stopped before reaching commanded position* Table 11 illustrates the complete hierarchy. Your menu parameters may be different depending on your configuration.For example if you do not have a DCV (CO2) sensor, then none of the DCV parameters appear.[ When values are displayed, pressing and holding the Y or B button causes the display to automatically increment.** n/a = not applicable[[ ERV Operation: When in Cooling mode AND the conditions are NOT OK for economizing --- the ERV terminal will be energized.In the Heating mode the ERV terminal will be energized when the OA is below the ERV OAT setpoint in the setpoint menu.*** When used with communicating actuator the damper out is reported in XX.X% open verses XX.X Vdc.[[[ After 10 minutes without a command or mode change, the controller will change to normal operation.Menu Notes1 STATUS ---> OCCUPIED – The factory-standard Occupancy signal originates with a thermostat or other controller call for indoor fan operation at CTB ter-minal G. This signal passes through the Central Terminal Board’s OCCUPIED jumper JMP1 to the ECONO connector and to the W7220’s OCC input termin-al. An external timeclock or relay is required to implement an Occupancy schedule on the economizer damper position.2 STATUS -> MA TEMP, SETPOINTS -> MAT SET – The W7220 menu parameters and labels include designations MA , MAT and Mixed Air for the econom-izer cooling control sensor. On these rooftop units, the economizer control sensor is located downstream of the evaporator/indoor coil in the supply fan sec-tion where this sensor is designated as Supply Air Temperature (SAT) sensor.3 SETPOINTS -> DRYBLB SET – This point is not displayed if a Return Air (differential) temperature sensor or an Outdoor Air enthalpy sensor is connected.4 SYSTEM SETUP parameters must be configured as noted for 2-Speed unit operation:EQUIPMENT = CONVAUX2 I = WFAN TYPE = 2SPEED