Carrier 100/A Series Installation, Start-Up, Operating And Service And Maintenance Instructions page 45

4-way multipoise, inducted-combustion gas furnace, input capacities: 45,000 thru 135,000 btuh
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Table
14- Orifice
Size* And Manifold
Pressure
(In. wc) For Gas Input
Rate
(CONT)
(TABULATED
DATA BASED
ON 21,000 BTUH
PER BURNER,
DERATED
4%/1000
FT (305M) ABOVE
SEA LEVEL)
ALTITUDE
AVG. GAS
SPECIFIC
GRAVITY
OF NATURAL
GAS
RANGE
HEAT VALUE
0.58
0.60
0.62
0.64
ft (m)
AT ALTITUDE
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
/Btu/cu
ft I
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
/
650
43
2.9
43
3.0
43
3.1
43
3.2
7001
675
43
2.7
43
2.7
43
2.8
43
2.9
--_
(2134)
700
43
2.5
43
2.6
43
2.6
43
2.7
C
O
725
43
2.3
43
2.4
43
2.5
43
2.5
to
750
43
2.1
43
2.2
43
2.3
43
2.4
8000
775
43
2.0
43
2.1
43
2.2
43
2.2
(2438)
800
48
3.6
48
3.7
43
2.0
43
2.1
825
48
3.3
48
3.5
48
3.6
48
3.7
C
O
625
43
2.7
43
2.7
43
2.8
43
2.9
m
8001
650
43
2.5
43
2.5
43
2.6
43
2.7
U
(2439)
675
43
2.3
43
2.4
43
2.4
43
2.5
700
43
2.1
43
2.2
43
2.3
43
2.3
to
725
48
3.7
43
2.0
43
2.1
43
2.2
9000
750
48
3.5
48
3.6
48
3.7
43
2.0
C
o
(2743)
775
3.8
48
3.4
48
3.5
48
3.6
/
/
9001
600
43
2.4
43
2.5
43
2.6
43
2.7
(2744)
625
43
2.3
43
2.3
43
2.4
43
2.5
650
43
2.1
43
2.2
43
2.2
43
2.3
to
675
48
3.6
48
3.8
43
2.1
43
2.1
10000
700
48
3.4
48
3.5
48
3.6
48
3.7
t3048)
725
3.7
* Orifice numbers
shown in BOLD are factory-installed.
3.8
48
3.4
48
3.5
A08221A
If status
code recall
is needed,
briefly
remove
then recomect
one main limit wire to display
stored status
code.
On RED LED boards
do not remove
power or blower
door before
initiating
statL_s cede recall
After
staiL_S code recall
is completed
component
test will occur.
LED
CODE
STATUS
CONTINUOUS
OFF
- Check
for
115VAC
at L1 and
L2, and
24VAC
at SEC-1
and
SEC-2,
CONTINUOUS
ON
- Control
has
24VAC
power,
RAPID
FLASHING
- Line voltage
(115VAC)
polarity
reversed,
If twinned,
refer
to twinning
kit instructions,
EACH OF THE FOLLOW1NG
STATUS
CODES IS A ]WO DIGIT
NUMBER Wl]]-I THE FI RST DIGIT DETERMI NED BY THE NUMBER OF SHORT FLASHES
AND THE SECOND
DIGIT BY THE NUMBER
OF LONG FLASHES.
11
NO PREVIOUS
CODE
- Stored
status
code
is erased
automatically
after
72 hours,
On
31
PRESSURE
SWITCH
DID NOT
CLOSE
OR REOPENED
- If open
longer
than
five
minutes
RED
LED
boards
stored
status
codes
can also
be erased
when
power
inducer
shuts
off for15
minutes
before
retry,
Checkfor:
-Excassivewied
(115
VAC or 24 VAC)
to control
is interrupted,
- Proper
vent
sizing
- Defective
inducer
motor
12
BLOWER
ON AFTER
POWER
UP
(115 VAC
or 24 VAC)
-Btower
runs
for 90 seconds,
- Low inducer
vottage
(115VAC)
- Defective
pressure
switch
if unit
is powered
Lip during
a cali for heat
(R-W
closed)
or R-W
opens
during
biower
- Inadequate
combustion
air suppiy
- Disconnected
or obstructed
pressure
tubinco
on-delay,
- Low inlet
gas
pressure
(if LGPS
used)
- Restricted
vent
13
LIMIT
CIRCUIT
LOCKOUT
- Lockout
occurs
if the iimit,
draft
safeguard,
flame
rottout,
or
If it opene
during
biower
on-detay
period,
biower
will come
on for the
selected
biower
blocked
vent
switch
(if used)
is open
ionger
than
3 minutes,
off-delay,
- Controi
will auto
reset after
three
hours,
- Refer
to #33,
33
LIMIT
CIRCUIT
FAULT
- Indicates
a limit,
draft safeguard,
flame
roitout,
or biocked
vent
14
IGNITION
LOCKOUT
- Controi
will auto-reset
after three
hours,
Refer
to #34,
switch
(if used)
is open,
Btower
will
run for 4 minutes
or until open
switch
remakes
21
GAS
HEATING
LOCKOUT
- Controt
will NOT
auto
reset,
whichever
is longer,
If open ioeger
than
3 minutes,
code
changes
to iockout
#13,
Check
for:
- Mis-wired
gas
valve
-Defective
control
(valve
relay)
If open
tess than
3 minutes
status
code
#33
continues
to flash
until
blower
shuts
off,
22
ABNORMAL
FLAME-PROVING
SIGNAL
- Ftame
is proved
while
gas valve
is de-
Flame
roHout switch
and
BVSS
require
manual
reset,
Check
for:
- Restricted
vent
energized,
Inducer
will
run unfit
fautt
is cleared,
Check
for:
- Leaky
gas valve
- Proper
vent
sizing
- Loose
blower
wheel,
- Excessive
wind
- Stuck-opan
gas valve
- Dirty
fliter
or restricted
duct
system,
23
PRESSURE
SWITCH
DID NOT
OPEN
Check
for:
- Defective
biower
motor
or
capacitor,
- Defective
switch
or connections,
- Obstructed
pressure
tubing,
- Pressure
switch
stuck
diosed,
- Inadequate
combustion
air suppiy
(Flame
Roll-out
Switch
open),
24
SECONDARY
VOLTAGE
FUSE
IS OPEN
Check
for:
34
IGNITION
PROVING
FAILURE
- Coetroi
will
try three
more
times
before
iockout
#14
- Short
circuit
in secondary
voltage
(24VAC)
wiring,
occurs,
If flame
signal
iost during
biower
on-delay
period,
biower
wilt
come
on for the
selected
biower
off-delay,
Check
for:
- Flame
sensor
must
not be grounded
- Oxide
buildup
on flame
sensor
(clean
with fine
steel
weal),
- Proper
flame
sense
microamps
(.5 microamps
D.C.
rain.,
4.0 - 6.0 nominal),
- Gas
valve
defective
or gas
valve
turned
off
- Manual
valve
shut-off
- Defective
Hot Surface
Ignitor
- Controi
ground
continuity
- Low iniet
gas
pressure
- Inadequate
flame
carryover
or rough
ignition
- Green/Yellow
wire
MUST
be connected
to furnace
sheet
metal
45
CONTROL
CIRCUITRY
LOCKOUT
Auto-reset
after
one
hour
iockout
due
to;
- Gas
valve
relay
stuck
open
- Flame
sense
circuit
failure
- Software
check
error
Reset
power
to ctear
lockout,
Replace
controt
if status
code
repeats,
COMPONENT
TEST
To
initiate
the
component
test sequence,
shut
OFF the
room
thermostat
or disconnect
the
"R"
I
I
thermostat
lead,
Briefly
short
the TESTfTWlN
terminal
to the
"Corn
24V"
terminal,
Status
LED
will
flash
code
and then
turn ON the
inducer
motor,
The inducer
motor
will
rue for the
entire
I
component
test,
The hot surface
ignitor,
biower
motor
fan
speed
(on
AMBER
LED
boards
only) b_ower
motor-heat
speed,
and
b_ower
motor-coot
speed
witt be turned
ON for
10-15
I
seconds
each,
Gas Valve
and
Humidifier
wilt
not be turned
on,
_
327596-101
REV. B
A04223
Fig. 55 - Service
Label
45

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