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MENU
PARAMETER
DA HI ALM
DCVCAL ENA
MAT T CAL
OAS T CAL
ADVANCED
SETUP (cont)
OA H CAL
RA T CAL
RA H CAL
DA T CAL
2SP FAN DELAY
DAMPER MINIMUM
POSITION
DAMPER OPEN
DAMPER CLOSE
CONNECT Y1–O
CHECKOUT***
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
MA T SENS ERR
CO2 SENS ERR
OA SYLK T ERR
OA SYLK H ERR
ALARMS
RA SYLK T ERR
RA SYLK H ERR
DA SYLK T ERR
OA SENS T ERR
ACT ERROR
Table 12 — W7220 Menu Structure* (cont)
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
NONE
70°F to 180°F
80°F (27°C)
(21°C to 82°C);
Increment by 5°F
MAN (manual)
MAN
AUTO
0.0°F
± 2.5°F
0.0°F
± 2.5°F
0% RH
±10% RH
0.0°F
± 2.5°F
0% RH
±10% RH
0.0°F
± 2.5°F
0 to 20 minutes in 1
5 Minutes
minute increments
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
appear on the screen
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
33
EXPANDED PARAMETER NAME
†
Used for alarm for when the DA air temperature is too high. Sets
upper range of alarm; above this temperature, the alarm will
show on the display.
Turns on the DCV automatic control of the dampers. Resets
ventilation based on the RA, OA, and MA sensor conditions.
Requires all (RA, OA, MA, CO
This operation is not operable with a 2-speed fan unit.
SUPPLY AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration
temperature sensor.
OUTSIDE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration
temperature sensor.
OUTSIDE AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity
sensor.
RETURN AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration
temperature sensor.
RETURN AIR HUMIDITY CALIBRATION
Allows for operator to adjust for an out of calibration humidity
sensor.
DISCHARGE AIR TEMPERATURE CALIBRATION
Allows for the operator to adjust for an out of calibration
temperature sensor.
TIME DELAY ON SECOND STAGE ECONOMIZING
When in economizing mode, this is the delay for the high speed
fan to try to satisfy the call for second stage cooling before the
first stage mechanical cooling is enabled.
The checkout for the damper minimum position is based on the
system. See Table 13.
Position damper to the full open position.
Exhaust fan contacts enable during the DAMPER OPEN test.
Make sure to 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 — no 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 1 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
2
disconnected - check wiring then replace sensor if the alarm
continues.
OUTSIDE AIR S-BUS SENSOR ERROR
Outdoor 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
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.
Notes
) sensors.
2
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Troubleshooting
