18
Table 6 —
Menu Structure (cont)
LEGEND
NOTES:
1. Table 6 illustrates the complete hierarchy. Your menu parameters
may be different depending on your configuration. For example if
you do not have a DCV (CO
2
) sensor, then none of the DCV
parameters appear.
2. When values are displayed, pressing and holding the
or
button causes the display to automatically increment.
3. N/A = Not Applicable.
4. 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.
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER RANGE AND
INCREMENT
NOTES
ALARMS
Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using SYLK bus
sensors, “SYLK” will appear on the screen, and when using 20k OA temperature sensors, “SENS T” will appear on the screen
MA T SENS ERR
N/A
N/A
Mixed air sensor has failed or become disconnected -
check wiring then replace sensor if the alarm continues.
CO2 SENS ERR
N/A
N/A
CO
2
sensor has failed, gone out of range or become
disconnected - check wiring then replace sensor if the
alarm continues.
OA SYLK T ERR
N/A
N/A
Outdoor air enthalpy sensor has failed or become
disconnected - check wiring then replace sensor if the
alarm continues.
OA SYLK H ERR
N/A
N/A
RA SYLK T ERR
N/A
N/A
Return air enthalpy sensor has failed or become
disconnected - check wiring then replace sensor if the
alarm continues.
RA SYLK H ERR
N/A
N/A
DA SYLK T ERR
N/A
N/A
Discharge air sensor has failed or become
disconnected - check wiring then replace sensor if the
alarm continues.
OA SENS T ERR
N/A
N/A
Outdoor air temperature sensor has failed or become
disconnected - check wiring then replace if the alarm
continues.
ACT ERROR
N/A
N/A
Actuator has failed or become disconnected - check for
stall, over voltage, under voltage and actuator count.
Replace actuator if damper is movable and supply
voltage is between 21.6 V and 26.4 V. Check actuator
count on STATUS menu.
FREEZE ALARM
N/A
N/A
Check if outdoor temperature is below the LOW Temp
Lockout on setpoint menu. Check if Mixed air
temperature on STATUS menu is below the Low
Setpoint on Advanced menu. When conditions are back
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 to AUX 2IN terminal.
DMP CAL RUNNING
N/A
N/A
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 in the Advanced
setup menu.
DA SENS ALM
N/A
N/A
Discharge air temperature is out of the range set in the
ADVANCED SETUP Menu. Check the temperature of
the discharge air.
SYS ALARM
N/A
N/A
When AUX1-0 is set to SYS and there is any alarm
(e.g., failed sensors, etc.), the AUX1-0 terminal has 24
Vac out.
ACT UNDER V
N/A
N/A
Voltage received by actuator is above expected range.
ACT OVER V
N/A
N/A
Voltage received by actuator is below expected range.
ACT STALLED
N/A
N/A
Actuator stopped before achieving commanded
position.
CLO
— Compressor Lockout
ERV
— Energy Recovery Ventilator
LCD
— Liquid Crystal Display
MA
— Mixed Air
MAT
— Mixed Air Temperature
N/A
— Not Applicable
OA
— Outdoor Air
OAT
— Outdoor Air Temperature
OCC
— Occupied
RA
— Return Air
RAT
— Return Air Temperature
RTU
— Rooftop Unit
SYS
— System
