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MENU
PARAMETER
DAMPER MINIMUM
POSITION
DAMPER OPEN
DAMPER CLOSE
CHECKOUT
CONNECT Y1–O
CONNECT Y2–O
CONNECT AUX1-O
CONNECT EXH1
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
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
ALARMS
FREEZE ALARM
SHUTDOWN ACTIVE
DMP CAL RUNNING
DA SENS ALM
SYS ALARM
ACT UNDER V
ACT OVER V
ACT STALLED
Table 11 — W7220 Menu Structure*(cont)
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
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
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
34
†
The checkout for the damper minimum position is based on the system.
Position damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test. Make sure you
pause in the mode to allow exhaust contacts to energize due to the delay in
the system.
Positions damper to the fully closed position
Closes the Y1-O relay (Y1-O)
Closes the Y2-O relay (Y2-O)
Energizes the AUX output. If Aux setting is:
• NONE — not action taken
• ERV — 24 Vac out. Turns on or signals an ERV that the conditions are not
good for economizing but are for ERV operation.
• SYS — 24 Vac out. Issues a system alarm
Closes the power exhaust fan 2 relay (EXH1)
SUPPLY AIR TEMPERATURE SENSOR ERROR
Mixed 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 - check
2
wiring then replace sensor if the alarm continues.
OUTSIDE AIR S-BUS SENSOR ERROR
Outdoor air enthalpy sensor has failed or become disconnected - check wir-
ing 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
Outdoor air temperature sensor has failed or become disconnected - check
wiring then replace 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 movable
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 Set-
point on Advanced 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
AUX2 IN 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 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 AUX1-0 is set to SYS and there is any alarm (e.g., failed sensors,
etc.), the AUX1-0 terminal has 24 Vac out.
ACTUATOR VOLTAGE LOW
Voltage received by actuator is above expected range.
ACTUATOR VOLTAGE HIGH
Voltage received by actuator is below expected range.
ACTUATOR STALLED
Actuator stopped before achieving commanded position.
NOTES
††
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