Reading the spec, it looks like the manufacture data 1 is not a separate command or the Away mode.
Meaning on the send you have to select a “Manual or Manufacture specific Mode”
and a bit field for number of bytes.
and then those specific bytes.
I cant tell if the binding currently supports that or not.
No of Manufacturer Data fields (3 bits)
This field is used to advertise the length in bytes of the Manufacturer Data field in the command. This
field MUST be in the range 0..7.
This field MUST be set to 0 if the Mode field is not set to 0x1F (MANUFACTURER SPECIFIC).
This field MUST indicate the length in bytes of the Manufacturer Data field if the Mode field is set to
0x1F (MANUFACTURER SPECIFIC).
Mode (5 bits)
This field is used to set the thermostat mode at the receiving node
Below is from the binding
What is needed is not support for 13 away
but support for 31 (0x1F) followed by additional data
OFF(0, "Off"),
HEAT(1, "Heat"),
COOL(2, "Cool"),
AUTO(3, "Auto"),
AUX_HEAT(4, "Aux Heat"),
RESUME(5, "Resume"),
FAN_ONLY(6, "Fan Only"),
FURNANCE(7, "Furnace"),
DRY_AIR(8, "Dry Air"),
MOIST_AIR(9, "Moist Air"),
AUTO_CHANGEOVER(10, "Auto Changeover"),
HEAT_ECON(11, "Heat Econ"),
COOL_ECON(12, "Cool Econ"),
AWAY(13, "Away"),
FULL_POWER(15, "Full Power"),
MANUAL(31, "Manual");