33
Table 7 -- Menu Structure* (cont)
Menu Parameter
Parameter
Default
Value
Parameter
Range and Increment
[
EXPANDED P ARAMET ER NAM E
Notes
ALARMS(#)
Alarmsdisplayonlywhentheyareactive.Themenutitle
“ALARMS(#)” inclu des the num ber of act ive ala rms in parenthesis ( ).
Wh en usin g S--- Bus sensor s , “SY LK” will appea r on the screen , an d
wh en usin g 20 k OA temperat u re sen s or s , “SE NS T” will appea r on
the screen .
MA T SENS ERR n/a n/a SUPPLY AIR TEMP ER ATURE SENSOR ERR OR
Supply air sensor has failed or become disconnected --- check wiring
then replace sensor if the alarm conti nues
CO2 SENS ERR n/a n/a CO
2
SENSOR ERROR
CO
2
se nsor has failed , gone out of range or become disconne ct ed ---
check wir i ng then rep lac e sensor if the alarm continues
OA SYLK T ERR n/a n/a
OUTSIDE AIR S - --BUS SENSOR ERROR
Outs id e ai r enthalpy sensor has fai led or bec ome di s connected --- check
wi ring then replace sensor if t he alarm co nt i nue s
OA SYLK H ERR n/a n/a
RA SYLK T ERR n/a n/a
RETURN AIR S ---BUS SENSOR ERROR
Return air enthalpy sensor has fai led or bec ome di s connected --- check
wi ring then replace sensor if t he alarm co nt i nue s
RA SYLK H ERR n/a n/a
DA SYLK T ERR n/a n/a DISCHARGE AIR S - --BUS SENSOR ERROR
Discharge air sens o r has fai le d or b ecome dis conne c ted --- c heck wir i ng
then replace sensor if the alarm conti nues
OA SENS T ERR n/a n/a OUTSIDE AIR TEMPERATURE SENSOR ERROR
Outs id e ai r temperature sens or has failed or become dis c onnected ---
check wir i ng then rep lac e sensor if the alarm continues
ACT ERROR n/a n/a ACTUA TOR ERROR
Act uator has failed or become di sc onnected --- check for st all, over
voltage, under voltag e and actuator count. Replace actuator if damper is
moveable and supply voltage i s between 21.6 V and
26. 4 V. Check actua t o r count on ST ATUS menu.
FREEZE ALARM n/a n/a Check if outdoor temperature is below the LOW Temp Lockout on
se t p o i nt menu. Chec k if Mixed air te mperature on STATUS menu is
be low the Lo Setpoint on Ad v a nc e d se t up menu. Whe n conditio ns are
back in norma l range the n the alarm will go aw ay.
SHUTDOWN ACTIVE n/a n/a AUX2INisprogrammedforSHUTDOWNand24Vhasbeenappliedto
AUX 2IN terminal
DMP CAL RUNNING n/a n/a DAMPER CALIB RATION ROUTINE RUNNING
If DCV Auto enable has been programmed, when the W7220 is
com p le t ing a calib rat ion on the d am p e rs , thi s alarm will d i splay. W a i t unti l
the calibration is completed and the alarm will go away . Must have OA,
MA and RA sens o rs for DCV calibrat ion; set up i s in the Ad va nc e d setup
menu.
DA SENS ALM n/a n/a DISCHARGEAIRTEMPERATURESENSORALARM
Discharge air temp era t ure is out of the range set in the ADVANCED
SETUP Menu. Check the tem pera t ure of the di scharge air.
SYS ALARM n/a n/a When A UX1---O i s set to SYS and there is any alarm (e.g., failed sensors ,
etc.), the AUX1---O termi nal has 24 V ac out.
ACT UNDER V n/a n/a ACTUA TOR VOLTAGE LOW
Voltag e recei ved at actuator is below expected range
ACT OVER V n/a n/a ACTUATOR VOLTAGE HIGH
Voltag e recei ved at actuator is above expected range
ACT STALLED n/a n/a ACTUATOR STALLED
Act uator st opp ed before reaching commanded posit ion
*
Table 7 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.
[
When valu es are displayed, pressing and h ol ding the Y or B button causes the display to a u tomatically 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
1 S T A T U S --- > O C C U P I E D – The factory-standard Occupancy signal origi nates with a thermostat or other controller call for indoor fan operation at CTB termi-
nal G. This signal passes thr ough the Central Terminal Board’s OCCUPIED jumper JMP1 to the ECONO connector and to the W7220’s OCC input terminal.
An external timeclock or relay is r equired to implement a n Occupancy schedule on the economizer damper position.
2 ST A TUS - > MA TEMP, SETPOINTS - > MAT SET – The W7220 menu para meters a nd labels inclu de designations MA , MAT and Mixed Air for the econom-
izer cooling control sensor. On these roof top 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 IN =W
FAN SPEED = 2SPEED
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