Carrier 50TCQD14 Installation Instructions Manual page 35

Menu Parameter
ALARMS(#)
MA T SENS ERR
CO2 SENS ERR
OA SYLK T ERR
OA SYLK H ERR
RA SYLK T ERR
RA SYLK H ERR
DA SYLK T ERR
OA SENS T ERR
ACT ERROR
FREEZE ALARM
SHUTDOWN ACTIVE
DMP CAL RUNNING
DA SENS ALM
SYS ALARM
ACT UNDER V
ACT OVER V
ACT STALLED
*
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 (CO
[ 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 Notes
STATUS ---> OCCUPIED – The factory-standard Occupancy signal originates with a thermostat or other controller call for indoor fan operation at CTB ter-
1
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.
STATUS -> MA TEMP , SETPOINTS -> MAT SET – The W7220 menu parameters and labels include designations MA , MAT and Mixed Air for the econom-
2
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 = CONV
AUX2 I = W
FAN TYPE = 2SPEED
Table 11 - - Menu Structure* (cont)
Parameter
Parameter
Default
Range and Increment
Value
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
n/a n/a
) sensor, then none of the DCV parameters appear.
2
EXPANDED PARAMETER NAME
[
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, and
when using 20k OA temperature sensors, "SENS T" will appear on
the screen.
SUPPLY AIR TEMPERATURE SENSOR ERROR
Supply air sensor has failed or become disconnected --- check wiring
then replace sensor if the alarm continues
CO SENSOR ERROR
2
CO sensor has failed, gone out of range or become disconnected ---
2
check wiring then replace sensor if the alarm continues
OUTSIDE AIR S---BUS SENSOR ERROR
Outside air enthalpy sensor has failed or become disconnected --- check
wiring then replace sensor if the alarm continues
RETURN AIR S---BUS SENSOR ERROR
Return air enthalpy sensor has failed or become disconnected --- check
wiring then replace sensor if the alarm continues
DISCHARGE AIR S---BUS SENSOR ERROR
Discharge air sensor has failed or become disconnected --- check wiring
then replace sensor if the alarm continues
OUTSIDE AIR TEMPERATURE SENSOR ERROR
Outside air temperature sensor has failed or become disconnected ---
check wiring then replace sensor if the alarm continues
ACTUATOR ERROR
Actuator has failed or become disconnected --- check for stall, over
voltage, under voltage and actuator count. Replace actuator if damper is
moveable and supply voltage is between 21.6 V and
26.4 V. Check actuator count on STATUS menu.
Check if outdoor temperature is below the LOW Temp Lockout on
setpoint menu. Check if Mixed air temperature on STATUS menu is
below the Lo Setpoint on Advanced setup menu. When conditions are
back in normal range then the alarm will go away.
AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to
AUX 2IN terminal
DAMPER CALIBRATION ROUTINE RUNNING
If DCV Auto enable has been programmed, when the W7220 is
completing a calibration on the dampers, this alarm will display. Wait until
the 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 setup
menu.
DISCHARGE AIR TEMPERATURE SENSOR ALARM
Discharge air temperature is out of the range set in the ADVANCED
SETUP Menu. Check the temperature of the discharge air.
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.
ACTUATOR VOLTAGE LOW
Voltage received at actuator is below expected range
ACTUATOR VOLTAGE HIGH
Voltage received at actuator is above expected range
ACTUATOR STALLED
Actuator stopped before reaching commanded position
35
Notes