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A801X-SF-1C-EN

25

Is 24 volts present,

measured across PS1 

(orange to yellow)?

See Note #1

Note #1

24 volts = Open Switch

0 volts = Closed Switch

DEFINITION

An error has occurred with the PS1, indica!ng that the pressure

switch is closed when it should be open.

In most cases, the pressure switch is not the problem.

NOTE: Verify pressure switch wiring and tube rou!ng

are correct.

3.1 Fault Code

Cycle power to the furnace

and call for 1   stage heat.

NO

Replace pressure

switch

Verify wiring. If

correct, replace IFC

YES

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Summary of Contents for A801X026AM2SAC

Page 1: ...at are attached to the equipment March 2020 A A8 80 01 1X X S SF F 1 1C C E EN N Upflow Downflow Horizontal Left Right Gas Fired Single Stage Induced Draft Furnaces with High Efficiency Motor U Up pf...

Page 2: ...EC CT TR RI IC CA AL L S SH HO OC CK K F FI IR RE E O OR R E EX XP PL LO OS SI IO ON N H HA AZ ZA AR RD D F Fa ai il lu ur re e t to o f fo ol ll lo ow w t th hi is s W Wa ar rn ni in ng g c co ou ul...

Page 3: ...pe er rs so on na al l i in nj ju ur ry y o or r d de ea at th h D Do o N NO OT T a at tt te em mp pt t t to o m ma an nu ua al ll ly y l li ig gh ht t t th he e f fu ur rn na ac ce e W WA AR RN NI IN...

Page 4: ...f b be ef fo or re e s se er rv vi ic ci in ng g f fi il lt te er rs s t to o a av vo oi id d c co on nt ta ac ct t w wi it th h m mo ov vi in ng g p pa ar rt ts s W WA AR RN NI IN NG G C CA AR RB BO...

Page 5: ...S SU UR RF FA AC CE E F Fa ai il lu ur re e t to o f fo ol ll lo ow w t th hi is s C Ca au ut ti io on n c co ou ul ld d r re es su ul lt t i in n p pe er rs so on na al l i in nj ju ur ry y D Do o N...

Page 6: ...te ed d t to o t th he e v ve en nt ti in ng g s sy ys st te em m T Tu ur rn n o on n a an ny y e ex xh ha au us st t f fa an ns s s su uc ch h a as s r ra an ng ge e h ho oo od ds s s so o t th he e...

Page 7: ...Velocity High Velocity High Velocity High Vel No Size Thk 1 14x25 1 in 1 14x25 1 in 1 16x25 1 in VENT PIPE DIAMETER Min in e 4 Round 4 Round 4 Round HEAT EXCHANGER Type Aluminized Steel Aluminized Ste...

Page 8: ...o Size Thk 1 16x25 1 in 1 16x25 1 in 1 16x25 1 in VENT PIPE DIAMETER Min in e 4 Round 4 Round 4 Round HEAT EXCHANGER Type Aluminized Steel Aluminized Steel Aluminized Steel Gauge Fired 20 20 20 ORIFIC...

Page 9: ...No Size Thk 1 20x25 1 in 1 20x25 1 in 1 24x25 1 in VENT PIPE DIAMETER Min in e 4 Round 4 Round 4 Round HEAT EXCHANGER Type Aluminized Steel Aluminized Steel Aluminized Steel Gauge Fired 20 20 20 ORIF...

Page 10: ...urrent use a VOM set to DC volts 1VDC 1 micro amp Flame current will vary depending on the type of meter used Typical flame current ranges from 0 75 3 0 micro amps 0 75 3 VDC 8 Once the flame sense ha...

Page 11: ...ctric power supply To clean burners remove burner bottom plate 2 screws and bottom burner bracket 2 screws Twist burner towards slot lift and push forward away from orifice Remove burners Alternate me...

Page 12: ...WH WH VENT MOTOR INDUCER 1 2 3 IGN ILI TR PS HLO MVC TH GND MV HLI FP W R G B C Y Y1 THERMOSTAT SEE NOTES 2 AND 3 LINE H CIRC H TNS H TNS N CIRC N LINE N IGN H IND H IND N IGN N 1 2 3 4 5 6 7 8 9 10 1...

Page 13: ...tic Pressure in W C Model Tap 0 1 0 3 0 5 0 7 0 9 A801X040AM3SAC 1 580 34 2 716 471 226 3 743 533 323 113 4 929 742 556 370 183 5 988 831 675 518 361 6 1112 975 839 702 566 7 1174 1046 917 788 659 8 1...

Page 14: ...0 3 0 5 0 7 0 9 A801X060BM4SAC 1 707 225 2 870 617 363 110 3 1073 895 716 538 360 4 1264 1126 988 850 713 5 1384 1260 1137 1013 890 6 1422 1304 1186 1069 951 7 1555 1452 1348 1244 1141 8 1658 1559 14...

Page 15: ...7 0 9 A801X100CM5SAC 1 918 438 2 1183 950 716 483 249 3 1709 1546 1383 1220 1057 4 1771 1676 1581 1486 1391 5 1931 1793 1656 1518 1380 6 2028 1898 1768 1638 1508 7 2177 2057 1938 1818 1699 8 2351 224...

Page 16: ...00 2100 2200 2300 2400 A801X026AM2SAC 48 39 32 A801X040AM3SAC 59 49 42 37 33 30 27 A801X040BM2SAC 59 49 42 37 33 30 27 A801X060BM3SAC 56 49 44 40 37 34 32 A801X060BM4SAC 56 49 44 40 37 34 32 A801X080B...

Page 17: ...key and then depress the OPTION key to the desired setting Then momentarily depress the MENU key again to save the change 180 C1 7 C1 1 C1 2 C1 3 C1 4 HtP Heating Speed Tap H1 5 H1 1 01 H1 2 H1 6 H1 3...

Page 18: ...nu key then push the op on key The LED will flash three mes then begin the test To exit the test mode momentarily push the Menu key cycle power to the furnace or make a valid thermostat call for capac...

Page 19: ...ing and wheel removed from view for clarity Furnace Model Dimension A inches A026 3 5 3 1 2 A040 3 75 3 3 4 B040 3 5 3 1 2 B060 3 ton 3 75 3 3 4 B060 4 ton 4 25 4 1 4 B080 4 25 4 1 4 2 375 A Blower ho...

Page 20: ...ty damage including death Troubleshoo ng Flowchart Index IFC Component Layout Ge ng Started Error Codes E2 1 Retries Exceeded flame never sensed E2 2 Recycles Exceeded loss of flame a er being sensed...

Page 21: ...and OPTION Select Buttons 5 Amp Fuse Flame Current FP HLI W R G B C Y Y1 Inducer Igniter Connector IGN N IND N IND H IGN H MV GND TH MVC HLO PS1 TR ILI 6 Pin CTM Motor Connector Tap 1 Low Speed Tap 2...

Page 22: ...VAC measured at transformer NO Is 120 VAC measured between Line and Neutral at the IFC NO Is 120 VAC measured between Line and Neutral at J box NO Verify Panel Loop is connected YES Repair high voltag...

Page 23: ...as pressure connector Is inlet gas pressure above 13 8 WC or less than nameplate minimum NO Correct inlet gas pressure Maximum pressure is 13 8 WC Check opera on YES There are two flame sense pads loc...

Page 24: ...lectrical power to furnace Connect manometer to manifold pressure connector NO YES NO Disconnect electrical power to furnace Connect manometer to inlet gas pressure connector Cycle power to furnace an...

Page 25: ...he PS1 indica ng that the pressure switch is closed when it should be open In most cases the pressure switch is not the problem NOTE Verify pressure switch wiring and tube rou ng are correct 3 1 Fault...

Page 26: ...switch wiring and tube rou ng are correct Note 2 Measured pressure is nega ve greater than refers to magnitude only 3 2 Fault Code NO Cycle power to the furnace and call for 1st stage heat NO Possibl...

Page 27: ...Increase blower off delay YES DEFINITION Limit switches are safety devices that will open when an abnormal high temperature has been sensed REMOVE ALL JUMPER WIRING TO SWITCHES Under no circumstances...

Page 28: ...comes on do flames stay consistent Replace heat exchanger Check opera on NO Replace Roll out switch Check opera on YES DEFINITION Limit switches are safety devices that will open when an abnormal hig...

Page 29: ...de and Installa on Instruc ons YES NO Disconnect power to unit Turn off gas supply Remove gas valve 05 Fault Code Is flame current measured across FS pads YES Is flame seen with no call for heat YES R...

Page 30: ...and ground problem Furnace must be on a dedicated circuit YES 6 1 Fault Code DEFINITION Ground Fault Incoming or chassis ground connec on is not sensed Connect volt meter to black incoming and chassi...

Page 31: ...s are ght Disconnect igniter and check resistance Is resistance reading between 37 70 ohms at 75F NO Replace ignitor Check opera on YES 6 3 Fault Code Igniter is good Does igniter glow Make a call for...

Page 32: ...resent when it should not be present Is 24 VAC nominal voltage present between Red lead at gas valve connec on to chassis ground Turn Comfort Control to OFF posi on Correct wiring Check opera on YES R...

Page 33: ...rrectly See figure YES YES Correct flame sensor loca on NO Flame sensor is good Check wiring and or connec ons NO 08 Fault Code Make a call for hea ng 442 REF 1 470 REF Flame Sensor 385 REF 585 REF 1...

Page 34: ...measured across the fuse terminals Replace fuse Is fuse fully seated into connector NO Properly seat the fuse NO Replace IFC YES Start unit and measure amp draw on transformer 24VAC red wire Is amp d...

Page 35: ...s unit is limited to TAP 1 only No field adjustment can be made If troubleshoo ng other speed taps use the method as outlined below using the voltages listed for the tap number being used A801X CTM Ou...

Page 36: ...EN Part List Igniter Flame Sensor In shot Burner s Gas Valve Inducer Assembly Blower Motor Blower Wheel IFC Integrated Furnace Control Pressure Switch es Main Thermal Limit Roll Out Switch es Reverse...

Page 37: ...A801X SF 1C EN 37 N No ot te es s...

Page 38: ...38 A801X SF 1C EN N No ot te es s...

Page 39: ...A801X SF 1C EN 39 N No ot te es s...

Page 40: ...lications For more information please visit www trane com or www americanstandardair com The manufacturer has a policy of continuous data improvement and it reserves the right to change design and spe...

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