Aprilaire 8800 - Page 50

VACHOLD
Vacation hold COS: N/A
Permissions: Read/Write
Query
Command
Syntax: SN[#] VACHOLD?<CR>
Description: Requests the configuration of the thermostat program vacation hold.
Assignment
Command
Syntax: SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [HT] [CL] [fan]<CR>
SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [HT] [fan]<CR>
SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [CL] [fan]<CR>
Description: Configures a vacation hold to end on [mm][dd][yy] at [hh][mm] with a heat setpoint of [HT], a
cool setpoint of [CL] and fan mode of [fan]. If the thermostat is configured with a Control Setup of Heat
Only or Cool Only or if the system mode is set to Heat, Emergency Heat or Cool, only the respective setpoint is
used. The syntax with both setpoints is only used when the system mode is AUTO.
Example: SN1 VACHOLD=011511 1200 62 AUTO<CR>
Response Syntax: SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [HT][scale] [CL][scale] [fan]<CR>
SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [HT][scale] [fan]<CR>
SN[#] VACHOLD=[mm][dd][yy] [hh][mm] [CL][scale] [fan]<CR>
Example: SN1 VACHOLD=011011 1900 65F AUTO<CR>
Node address 1 responds with a vacation hold configured to end on January 10, 2011 at 7:00PM with a heat
setpoint of 65°F and fan mode of AUTO.
Parameters Range
mm: end date month [01 – 12]
dd: end date day [01 – 31]
yy: end date year [00 – 99]
hh: end time hours in 24-hour format [00 – 23]
mm: end time minutes [00 – 59]
HT: hold heat setpoint
Fahrenheit [40 – 90]
Celsius [4 – 32]
CL: hold cool setpoint
Fahrenheit [42 – 99]
Celsius [6 – 37]
fan: hold programmed fan mode [AUTO, A, ON, CIRC]
AUTO, A: fan auto mode
ON: fan on mode
CIRC: fan circulate mode
scale: temperature scale [F, C]
F: Fahrenheit
C: Celsius
If a query command is received and a vacation hold is not active, no response is sent. If an assignment command is received and another
hold type is currently active, the currently active hold is replaced by the vacation hold. The current hold status is read using the HOLDSTAT
command. A vacation hold is cancelled using the HOLDSTAT command.
This command is ignored if the controller type is set to humidistat or if the thermostat is configured as non-programmable. The vacation hold
configuration state can be changed through the Home Screens for thermostat control. If the vacation hold configuration is changed at the
thermostat, a C17 COS unsolicited message is issued (if C17 is ON).
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