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58
COMMUNICATING SYS-
TEMS
The modulating furnace is capable
of communicating with a thermostat
and condenser to improve cooling
and heat-pump airflow, displaying
active faults and active furnace
information at the thermostat and
improved diagnostics and trou-
bleshooting.
WIRING A FURNACE FOR COM-
MUNICATIONS.
Maximum wire lengths and notes
about wiring communicating sys-
tems are noted below.
MAXIMUM COMMUNICATING
WIRE LENGTHS (1, 2, R & C)
Max Wire Length – Thermostat to
Furnace = 100 FT @ 18 AWG*
Max Wire Length – Furnace to
Condenser = 125 FT @ 18 AWG*
Notes:
1. When using twisted pairs, be
sure the wires connected to pins
labeled “1” (recommended wire
color = green) and “2” (recom-
mended wire color = yellow) are
a twisted pair.
2. Wires may be solid or stranded..
3. *Wire gage smaller than 18 AWG
is not approved or recommended
for this application.
4. When using existing wire from a
previous installation, be sure to
trim the tip of the wire back past
the insulation and strip a small
amount of insulation from the
wire to expose clean new copper
for the communicating connec-
tions. Fresh copper must be
exposed when making the com-
municating connections or com-
munications may not be properly
established.
Figure 45 is the wiring diagram for
connecting the furnace to an
approved ClimateTalk communicat-
ing thermostat and approved Rheem
or Ruud communicating condenser.
The only approved configuration is
to install dedicated wires directly
from the furnace to the thermostat
and a separate set of dedicated
wires directly from the furnace to the
condenser. Note: The only
approved configuration requires that
four dedicated wires (1, 2, R and C)
be installed from the furnace to the
condenser.
TABLE 19
LIST OF FAULT CODES AND NORMAL OPERATION CODES
FAULT CODE # TEXT MESSAGE
MESSAGE TO HOMEOWNER
CODE
NUMBER
(displayed at
furnace)
d1
NO SHARED DATA
"Call For Service" & "CHECK FURNACE"
d1
d4
MEM CARD INVALD
(None)
d4
d5
CARD-HRD CNFLCT
(None)
d5
d6
BLWR HP CNFLCT
"Call For Service" & "CHECK FURNACE"
d6
d7
BLWR MFG CNFLCT
"Call For Service" & "CHECK FURNACE"
d7
d8
OLD SHARED DATA
(None)
d8
d8
OLD SHARED DATA
"Call For Service" & "CHECK FURNACE"
d8
h
GAS HT ON-NO V
(None)
h (steady)
10
IGN 1 HR RTRY
"Call For Service" & "CHECK FURNACE"
10
11
FAILED IGNITION
(None)
11
12
LO FLAME SENSE
(None)
12
13
FLAME LOST
(None)
13
14
UNEXPCTED FLAME
"Call For Service" & "CHECK FURNACE"
14
22
MAIN LIMIT OPEN
(None)
22
23
HALC LIMIT OPEN
"Call For Service" & "CHECK FURNACE"
23
26
LINE_NTRL RVRSD
"Call For Service" & "CHECK FURNACE"
26
33
MRLC OPEN
"Call For Service" & "CHECK FURNACE"
33
44
LPC CLOSED
"Call For Service" & "CHECK FURNACE"
44
45
LPC OPEN
"Call For Service" & "CHECK FURNACE"
45
46
LPC OPEN
"Call For Service" & "CHECK FURNACE"
46
55
HPC CLOSED
"Call For Service" & "CHECK FURNACE"
55
57
HPC OPEN
"Call For Service" & "CHECK FURNACE"
57
60
BLWR FLT-RUN
(None)
60
61
BLWR FLT-NO RUN
"Call For Service" & "CHECK FURNACE"
61
66
BLOWER OVRSPEED
(None)
66
68
NO BLWR COMM
"Call For Service" & "CHECK FURNACE"
68
71
NO INDUCER COMM
"Call For Service" & "CHECK FURNACE"
71
77
NO GV FEEDBACK
"Call For Service" & "CHECK FURNACE"
77
93
CONTROL FLT
"Call For Service" & "CHECK FURNACE"
93
CODE
DISPLAYED AT
FURNACE
0
c
C
F
hp
HP
H (steady)
h (steady)
Low-stage heat-pump operation
Furnace heat with valid modulation signal or Communicating heat signal
Standby mode - no thermostat calls, no active faults.
Low-stage cooling (not displayed in communicating modes)
High-stage cooling (displayed during both low and high cooling in communicating mode)
FAULT CODES / MESSAGES
Continuous Fan Operation
NORMAL OPERATION CODES / MESSAGES
DESCRIPTION (Neither a code or message is displayed at the thermostat. A code
number only is displayed at the furnace control.)
MESSAGE TO TECHNICIAN at TSTAT (note:
Fault Code Number and Fault Code Text are
displayed in two separate regions of T-Stat
display)
High-stage heat-pump operation
Heat call with no valid modulation signal (legacy modes only)
16
"Call For Service" & "CHECK FURNACE"
16
IGN FAIL
NOTE: To clear current fault codes in the furnace control buffer, push and hold down the "FAULT RECALL"
button (SW1) for three seconds. Both seven-segment displays will light up the center segments (– –) briefly
as confirmation that the faults have been cleared. This will clear faults in the buffer displayed at power-up on
the seven-segment display and in the user menu displayed at the thermostat.
Содержание RGFG
Страница 70: ...70 FIGURE 49 UPFLOW SIDE FILTER LOCATIONS CUT OUT AND DRILL DETAIL ROD FILTER SUPPORT ANGLE ASSEMBLY I332 ...
Страница 72: ...72 FIGURE 50 TROUBLESHOOTING CHART MODULATING INTEGRATED FURNACE CONTROL IFC TROUBLESHOOTING GUIDE ...
Страница 73: ...73 FIGURE 50 CONTINUED TROUBLESHOOTING CHART CONTINUED ...
Страница 90: ...90 TABLE 24 CONTINUED FURNACE FAULT CODES EXPANDED W DESCRIPTIONS AND SOLUTIONS CONTINUED ...
Страница 91: ...91 FIGURE 51 WIRING DIAGRAM STEPPER MODULATING GAS VALVE FUEL CODE HU FURNACE MODEL IS RGFG ...