Aprilaire 8800 - Status Commands

STATUS COMMANDS
HVAC, H
Relay output status COS: C1
Permissions: Read only
Query
Command
Syntax: SN[#] HVAC?<CR>
SN[#] H?<CR>
Description: Requests the current state of the relay outputs.
Response or
COS Message
Syntax: SN[#] HVAC=G[x]Y1[x]W1[x]Y2[x]W2[x]B[x]O[x]<CR>
Example: SN1 HVAC=G-Y1-W1+Y2-W2+B+O-<CR>
Node address 1 responds with outputs W1, W2 and B, ON and G, Y1, Y2 and O, OFF.
Parameters Range
value: relay output status [-, +]
-: relay status is OFF
+: relay status is ON
If any relay status changes, a C1 COS unsolicited message is issued (if C1 is ON).
RECOVSTAT
Progressive recovery status COS: C15
Permissions: Read only
Query
Command
Syntax: SN[#] RECOVSTAT?<CR>
Description: Requests the current state of progressive recovery.
Response or
COS Message
Syntax: SN[#] RECOVSTAT=[value]<CR>
Example: SN1 RECOVSTAT=OFF<CR>
Node address 1 responds with a progressive recovery status of OFF.
Parameters Range
value: progressive recovery status [OFF, ON]
OFF: progressive recovery is inactive
ON: progressive recovery is active
This command is ignored if the controller type is set to humidistat.
If the progressive recovery status changes, a C15 COS unsolicited message is issued (if C15 is ON).
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