Issue
Damper position and Valves do not respond to any commands that are sent to it.
Environment
MR-VAV-AX
Cause
The SPL setting on the device was set to 1650, this is a default setting but needs to be set to a correct value otherwise the damper position would not function properly.
Resolution
The chart below can be found in TCON147: ASC-VAV-AX Installation Guide, page 69. This shows what values need to be set for this to function.
Table 12. Shutdown/Purge/Lockout Values
| S/P/L Value | Mode | Cooling Damper | Heating Damper | Auxiliary Heating | |
|---|---|---|---|---|---|
| Fan | Heat | ||||
| 0 to 99 | Normal | Modulating | Modulating | Cycling/On | Cycling |
| 100 to 199 | Lockout - Heat | Modulating | Closed | Off | Off |
| 200 to 299 | Lockout - Cool | Closed | Modulating | Cycling/Off | Cycling |
| 300 to 399 | Lockout - Full | Closed | Closed | Off | Off |
| 400 to 599 | Purge | CHF | CHF | On | Off |
| 600 and over | Shutdown | Closed | Closed | Off | Off |
