31
C
C
C
C
C O M F
O M F
O M F
O M F
O M FO R
O R
O R
O R
O RT N E T ™ S Y
T N E T ™ S Y
T N E T ™ S Y
T N E T ™ S Y
T N E T ™ S YS T E M
S T E M
S T E M
S T E M
S T E M
Submenu Item
User Modifiable Options
Comments
Cool Airflow (CL CFM)
18, 24, 30, 36, 42, 48, or 60, default
is 18
Selects the airflow for the non-CT
compatible single stage AC unit
Cool Airflow Trim (CL TRM)
-10% to +10% in 2% increments,
default is 0%
Selects the airflow trim amount for the non-
CT compatible single stage AC unit
Cool Airflow Profile (CL PRFL)
A, B, C, or D, default is A
Selects the airflow profile for the non-CT
compatible single stage AC unit
Cool ON Delay (CL ON)
5, 10, 20, or 30 seconds, default is
5 seconds
Selects the indoor blower ON delay for the
non-CT compatible single stage AC unit
Cool OFF Delay (CL OFF)
30, 60, 90, or 120 seconds, default
is 30 seconds
Selects the indoor blower OFF delay for the
non-CT compatible single stage AC unit
NON-COMM (APPLIES ONLY TO A CT COMPATIBLE FURNACE MATCHED
WITH A NON-CT COMPATIBLE SINGLE STAGE AIR CONDITIONER)
T
HERMOSTAT
M
ENU
If this furnace is installed with a CT compatible heat pump, the
system is recognized as a dual fuel system. The balance point tem-
perature should be set via the thermostat advanced menu. Navi-
gate to the THERMOST
THERMOST
THERMOST
THERMOST
THERMOSTA
A
A
A
AT
T
T
T
T menu. Press the INST
INST
INST
INST
INSTALLER C
ALLER C
ALLER C
ALLER C
ALLER CONFIG
ONFIG
ONFIG
ONFIG
ONFIG
key. Navigate to the SE
SE
SE
SE
SETUP
TUP
TUP
TUP
TUP menu and press the INST
INST
INST
INST
INSTALLER C
ALLER C
ALLER C
ALLER C
ALLER CON-
ON-
ON-
ON-
ON-
FIG
FIG
FIG
FIG
FIG button. Navigate to dF BAL PNT
dF BAL PNT
dF BAL PNT
dF BAL PNT
dF BAL PNT. Adjust the dual fuel system
balance point using the back/forward arrows.
D
IAGNOSTICS
Accessing the furnace’s diagnostics menu provides ready access to
the last six faults detected by the furnace. Faults are stored most
recent to least recent. Any consecutively repeated fault is stored a
maximum of three times. Example: A clogged return air filter causes
the furnace limit to trip repeatedly. The control will only store this
fault the first three
consecutive
times the fault occurs. Navigate to
the diagnostics menu as described above in
Accessing and Navigat-
ing the Advanced Features Menus
.
NOTE:
NOTE:
NOTE:
NOTE:
NOTE: It is highly recommended that the fault history be cleared
when performing maintenance or servicing the furnace.
N
N
N
N
N
ETWORK
ETWORK
ETWORK
ETWORK
ETWORK
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
TROUBLESHOOTING
Communications is achieved by taking the difference between
two dc signals. The signals and transmission lines are referred to
as “data 1” and “data 2”. Each transmission line is biased to
approximately 2.5Vdc. During data reception/transmission, the
data lines vary b5V and ground. (When data 1 is
increasing t5V, data 2 is decreasing towards ground and
when data 1 is decreasing towards ground, data 2 is increasing
t5V. Typically, the data 1 line is approximately 2.6Vdc
and the data 2 transmission line is approximately 2.3Vdc. The
voltage difference between data 1 and data 2 is typically 0.2 to
0.6 Vdc.
The indoor control is equipped with a bank of three dipswitches
that provide biasing and termination functions for the communi-
cations transmission lines. The outdoor control in the CT™
compatible unit is equipped with a bank of two dipswitches that
provide termination functions for the communications transmis-
sion lines. Communications errors will result if these switches
are not correctly set. The table below indicates the switch
position for the bias and termination dipswitches along with the
expected voltages. Note that the ON position is the correct
position for all bias and termination dipswitches.
TERM
Dipsw itch
Sw itch 1 Sw itch 2
Sw itch 3
Sw itch 1 Sw itch 2
ON
ON
ON
ON
ON
>2.5
<2.5
>0.2
ON
ON
OFF
ON
ON
>2.8
<2.2
>0.6
ON
ON
ON
OFF
ON
>2.8
<2.2
>0.6
ON
ON
ON
ON
OFF
>2.8
<2.2
>0.6
ON
ON
OFF
OFF
OFF
5
0
5
OFF
ON
ON
ON
ON
0
0
0
ON
OFF
ON
ON
ON
5
5
0
OFF
OFF
ON or OFF
ON or
OFF
ON or
OFF
0
0
0
BIAS
Dipsw itches
Indoor Control
TERM1 / TERM2 = Termination dipsw itches at outdoor unit. See installation
instructions w ith CT
TM
compatiable outdoor unit.
Data Line
Voltages, Vdc
Outdoor
Control
1-C
2-C
1-2
TERM
Dipsw itches
1
2
ON
OFF
3
BIAS
BIAS
TERM
IIIIIndoor Unit BIAS and
ndoor Unit BIAS and
ndoor Unit BIAS and
ndoor Unit BIAS and
ndoor Unit BIAS and TERMINA
TERMINA
TERMINA
TERMINA
TERMINATION Dipswit
TION Dipswit
TION Dipswit
TION Dipswit
TION Dipswitches
ches
ches
ches
ches
Содержание GDVC80703B
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