Carrier 160 Series - Adjustments

RAPID FLASHING - Line voltage (115V AC) polarity reversed.
If status code recall is needed disconnect the "R" thermostat lead, reset power, and put setup switch "SW1-1" in the ON
position. To clear the status code history put setup switch "SVV1-1" in the ON position and jumper thermostat terminals "R", iti
IWAN", and "Y/Y2" simultaneously until status code #11 is flashed.
a I RT| MER
SERVICE
LED CODE STATUS i q , . i aa
CONTINUOUS OFF - Check for 115VAC atL1 and L2, and 24VAC at SEC-1 and SEC-2.
CONTINUOUS ON - Control has 24VAC power.
EB EACH OF THE FOLLOWING STATUS CODES ISA TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY THE NUMBER OF LONG FLASHES. Ei
i 11 NO PREVIOUS CODE - Stored status codes are erased automatically after 72 32 Continued: Check for: - Low inducer voltage (116 VAC) COMPONENT TEST
hours or as specified above. - Defective inducer motor - Inadequate combustion air supply
12 BLOWER ON AFTER POWER UP (115 VAC or 24 VAC) -Blower runs for 90 - Defective pressure switch - Low inlet gas pressure (if LGPS used)
seconds, if unit is powered up during a cail for heat (R-W/\W1 closed) or - Low inducer voltage (115 VAC) To initiate the component test sequence, shut
{R- -WIW 1 opens curing blower on-delay period. - Disconnected or obstructed pressure tubing OFF the room thermostat or disconnect the "R”
13 LIMIT oe ocke Loc Such fused) open longer graftsafequard flame 33 LIMIT CIRCUIT FAULT - indicates a limit, draft safeguard, flame rollout, or thermostat lead. Reset power and then put setup
fi blocked vent switch (if used} is open or the furnace is operating in high-heat switch "SW1-6" in the ON position to start the
Guccessive limit trips occurred durin igh heat Control will auto reset after only mode due to 2 successive low heat limit trips. Blower will run for 4 component test sequence. Once initiated the
44 IGNITION LOCKOUT - Contro! will auto-reset after three hours. Refer to status minutes or until open switch remakes whichever is longer. Hf open longer furnace control will turn the inducer ON at high-
than 3 minutes, code changes to lockout #13. ff open less than 3 minutes heat speed. The inducer motor will run for the
, A p
48 BLOWER MOTOR LOCKOUT - Indicates the blower failed to reach 250 RPM ot status code #33 continues to flash until blower shuts off. Flame rollout switch entire test. The hot surface igniter and blower
the blower failed to eyes Con within 30 seconds after being jumed ON in two and eves require manual reset. _ Check for - Loose Blower wheel motor will be tured ON for 1 seconds each.
successive heating cycles. Control will auto reset after 3 hours - Restricted vent ~ Proper vent sizing =~ EXCessive Win When the bi is t d OFF the ind: ill
| Refer to status code - Dirty filter or restricted duct system - Defective switch or connections be switched to low-speed for 10 seconds, When
241 S HEATING EScKour Control will NOT auto reset. Check for: ~ Inadequate combustion air supply {Flame Roll-out Switch open) the component test is completed one or more of
22 ERCRAE EUR rrovins SIENA Bate Spore thease eee eS ger | teflon coder ah
jockou occurs. If flame signal lost during blower on-delay period, blower
de-energized. inducer wil run until fault is cleared. Check for: will come on for the selected blower off-delay. Check for:
[ 23 phgak Bae pase Ob a wae for: - Oxide buildup on flame sensor (clean with fine steel wool} CODE DESCRIPTION
"Obstructed pressure tubing.” ~ Presstte Snitch stuck closed «Motul valve chutof "Low mist gas pressure Contol ground contnutty | 17 indicates the blower motor tested
24 SECONDARY YOLTAGE FUSE IS OPEN Check for: - Short circuit in secondary "Gas valve defective or turned off Flame sensor must not be OK. Visual check of inducer motor
- - grounded tani ‘
j 25 INAS MCHC SECECTION OR SETUP ERROR - ziindiates either the model - Inadequate flame carryover or rough ignition and hot surface ignfer required.
Jug is missing or incorrect of, setup switch "SW1-1" W1-6" is positioned - Green/Ye llow wire MUST be connected to furnace sheet metal 25 SETUP ERROR - Same as code 25 above.
ly. If code flashes 4 th 7 ‘i defaulting t del 41 BLOWER MOTOR FAULT - Indicates the blower failed to reach 250 RPM ~ Indi
selechon ored in memory. Check fon power-up conta is deaunng Ny vic Sr or the blower failed to communicate within the prescribed times limits. Thirty 4“ BLOWER MOTOR FAULT « Indicates
both SW1-1 & SW1-6 ON. - Board date code 2103 or later required to recognize model seconds after being tured ON or ten seconds during steady-state operation. blower, wiring, and furnace control
lug 007. - Proper model plug number and resistance values per wiring diagram 43 LOW-HEAT PRESSURE SWITCH OPEN WHILE HIGH-HEAT PRESSURE > > .
341 PIS erear PRESSURE SWITCH OR RELAY DID NOT CLOSE OR SWITCH IS CLOSED - Check for: - Mis-wired pressure switches To repeat component test tum setup switch
REOPENED - Control relay may be defective. Refer to status code #32. - Low-heat pressure switch stuck open - Low inlet gas pressure {if LGPS used) [| “SW1-6" OFF and then back ON. After component
32 LOW-HEAT PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open - Disconnected or obstructed pressure tubing test is completed put setup switch “SW1-6" in the
longer than five minutes, inducer shuts off for 15 minutes before retry. If opens 45 CONTROL CIRCUITRY LOCKOUT Auto-1 eset after one hour lockout due to; OFF position and reconnect the "R” thermostat >
during blower on-delay period, blower will come on for the selected blower - Gas valve relay stuck open - Flame sense circuit failure - Software check error | lea S)
off-delay. Check for. - Excessive wind —- Restricted vent - Proper vent sizing Reset power to clear lockout. Replace control if status code repeats. 328787-101 REV. A
wh
A04015
Fig. 52 - Service Label
Adjustments
CUANDO:
FIRE HAZARD
Failure to follow this warning could result in personal
injury,
death
and/or
property
damage.
DO NOT bottom out gas valve regulator adjusting screw.
This can result in unregulated manifold pressure and result
in excess overfire and heat exchanger failures.
4& CAUTION
FURNACE DAMAGE HAZARD
Failure to follow this caution may result in reduced furnace
life.
DO NOT = redrill orifices. Improper drilling (burrs,
out-of-round holes, etc.) can cause excessive burner noise
and misdirection of burner flames. This can result in flame
impingement of heat exchangers, causing failures. (See Fig.
50.)
Furnace gas input rafe on rating plate is for installations at
altitudes up to 2000 Ft. (610 M). Furnace input rate must be
within +/-2 percent of furnace rating plate input. For altitudes
above 5500 Ft. (1676 M), a field-supplied high altitude pressure
switch is required.
1. Determine the correct gas input rate.
The input rating for altitudes above 2,000 ft. (610 M) must
be reduced by 4 percent for each 1,000 ft. (305 M) above
sea level.
For installations below 2000 Ft. (610 M), refer to the unit
rating plate. For installations above 2000 Ft. (610 M),
multiply the input on the rating plate by the de-rate multi-
plier in Table 10 for the correct input rate.
bo . Determine the correct orifice and manifold pressure adjust-
ment. All models in all positions except Low NOx models
in downflow and horizontal positions use Table 14
(22,000 Btuh per burner.) Low NOx models in downflow
or horizontal positions must use Table 15 (21,000 Btuh
per burner.) See input listed on rating plate.
a. Obtain average yearly gas heat value (at installed alti-
tude) from local gas supplier.
b. Obtain average yearly gas specific gravity from local
gas supplier.
c. Find installation altitude in Table 14 or 15.
d. Find closest natural gas heat value and specific gravity
in Table 14 or 15.
e. Follow heat value and specific gravity lines to point of
intersection to find orifice size and low-and high-heat
manifold pressure settings for proper operation.
f. Check and verify burner orifice size in furnace.
NEVER ASSUME ORIFICE SIZE. ALWAYS
CHECK AND VERIFY.
NOTE: If orifice hole appears damaged or it is suspected to have
been redrilled, check orifice hole with a numbered drill bit of
correct size. Never redrill an orifice. A burr-free and squarely
aligned orifice hole is essential for proper flame characteristics.
g. Replace orifice with correct size, if required by Table
14 or 15. Use only factory-supplied orifices. See
EXAMPLE 1.
Table 11 - Altitude Derate Multiplier for U.S.A.
ALTITUDE PERCENT DERATE MULTIPLIER
FT. (M) OF DERATE FACTOR*
(o-610) 0 4.00
more | a =
sera) ae ose
worse | seo 08
soreness ore
ae | eae ore
Tere | ase a70
Sere | see =
soo romme | geo =