— Used to verify software version.
------------------------------------------------
— Used to verify and change factory configura-
tion. Requires password entry in . See Example 7.
NOTE: When more than one unit is connected to the
Carrier Comfort Network, the element address must be changed
on all but one unit. The element address system default
is 1, and element address numbers cannot be repeated.
Element address must be changed at the local interface
device.
------------------------------------------------
Example 7 — Reading and Changing
Factory Configurations
KEYBOARD
ENTRY DISPLAY
RESPONSE COMMENTS
FACT CFG Factory configuration sub-
function of service function
TYPE CV Unit type is constant volume
UNIT TYPE IS CV Explanation is scrolled across
screen
TYPE VAV Unit type is changed to VAV
COOL COI Cooling type is coil
DXST 2 DX cooling stage quantity is 2
HEAT HCL Heating type is hot water/
steam coil
HEAT NON Changed to no heat unit
HEAT ELE Changed to electric heat
HEAT COI Heating type is changed back
to hot water/steam coil
EHST 0 Electric heater stages = 0
EHST N Electric heater stages = N,
where N = number of stages
MIXD ALG Unit with mixed air dampers
MIXD NON Changed to without dampers
IAQT 1 Indoor air quality type
is single gas sensor
MATP YES Mixed air temperature
protection enabled
BUS 0 Bus number = 0
ADR 1 Element address = 1
ADR 2 Element address changed to 2
PSW XXXX Password
— Used to change the HSIO display of the measure-
ments from English to Metric. See Example 8.
------------------------------------------------
— Used to read or change factory configuration of
user options. See Example 9.
------------------------------------------------
Example 8 — Configuration of Measurements
KEYBOARD
ENTRY DISPLAY
RESPONSE COMMENTS
UNIT 0 Measurements are displayed using
English (0 = English, 1 = Metric)
UNIT 1 Measurements are now displayed
using the Metric system
UNIT 0 Measurements are returned to
English
Example 9 — User Configurations
KEYBOARD
ENTRY DISPLAY
RESPONSE COMMENTS
USER CFG User configurations
NTEN DSB NTFC is disabled
NTEN EN NTFC is enabled
NTEN DSB NTFC is disabled
HUEN 0 Humidifier control is none
HUEN 1 Unit changed to analog humidifier
control
HUEN 0 Humidifier control is changed back
to none
OHEN DSB Scroll past occupied heating
(disabled)
RSEN DSB Space temperature reset (disabled)
DLEN DSB Scroll past demand limiting
(disabled)
FTEN DSB Fan tracking (disabled)
OAEN DSB Constant outside air (disabled)
NPEN DSB Night purge (disabled)
AQEN DSB Indoor air quality (disabled)
IAQP DSB Indoor air quality priority
level (disabled)
OSEN DSB Optimal start is disabled
OSEN EN Optimal start is enabled
OSEN DSB Optimal start is disabled
TSCH 1 Time schedule No. 1 is enabled
TSCH 2 Time schedule No. 2 is enabled
TSCH 1 Time schedule is changed back to
No. 2
TOVR 0 Time override value=0hrs
TOVR 1 Time override value=1hr
TOVR 0 Time override value=0hrs
NTFC — Nighttime Free Cooling
84