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UHM-DHM-SF-1H

45

Service Facts

Scroll through 

User Interface to 

View number 1 of 

Last 4 Faults

User Interface 

shows a 

FLAME 

ERROR?

DEFINITION:

Flame is sensed when it 
should not be sensed.

Disconnect 

electrical power to 

furnace

Is there a drip leg 

installed on inlet 

gas piping per 

installation 

instructions? 

Using a back-up wrench, 

install new gas valve 

Check operation

Inspect gas supply 

for leaks and have 

gas supplier check 

gas quality

Are there signs of 

moisture or debris 

in the inlet of the 

valve?

YES

Install drip leg per 

National Fuel Gas 

Code and 

Installation 

Instructions

YES

NO

NO

Turn off gas 

supply! Remove 

gas valve 

5 Flash Fault LED

Summary of Contents for ADHMB060BCV3VA

Page 1: ...luminized Steel Type I 20 3 45 3 56 Modulating Hot Surface Igniter Multiport Inshot 3 115 1 60 8 7 15 1 2 H x W x D 41 3 4 x 19 1 2 x 30 1 2 158 146 UHMC100ACV4VA Upflow Horizontal 40 000 38 000 100 0...

Page 2: ...Steel Type I 20 5 45 5 56 Modulating Hot Surface Igniter Multiport Inshot 5 115 1 60 11 2 20 1 2 H x W x D 41 3 4 x 23 x 30 1 2 185 175 DHMB060BCV3VA Downflow Horizontal 24 000 22 800 60 000 57 000 3...

Page 3: ...an Electrical Code CSA C22 1 or local codes to minimize personal injury if an electrical fault should occur Failure to follow this warning could result in an electri cal shock fire injury or death WAR...

Page 4: ...rifice in H fitting must be pointing away from PS1 FURNACE COMPONENTS To Pressure Switch PS 1 Important Brass orifices located in these two legs H Fitting must be installed in this orientation VACUUM...

Page 5: ...IOUS PERSONAL INJURY OR DEATH WARNING ELECTRICAL SHOCK HAZARD DO NOT TOUCH ANY COMPONENTS OTHER THAN THE DISPLAY ASSEMBLY AND THE DOOR SWITCH DURING THIS PROCEDURE FAILURE TO FOLLOW WARNING COULD RESU...

Page 6: ...00 A TDHMD120 1850 1850 2040 1660 1760 Information Menu Information Options MODEL NUMBER MODEL A TUHM SERIAL NUMBER SERIAL SW REV NUMBER SW REV NUMBER SYSTEM STATUS SYSTEM STATUS OFF REQUESTED CFM REQ...

Page 7: ...50 55 65 80 A TUHMB080 1400 1400 1610 1120 1260 A TUHMC100 1620 1620 1790 1460 1540 CONT FAN CFM CONT FAN CFM A TUHMD120 1890 1890 2000 1700 1790 50 50 75 100 25 A TDHMB060 1040 1040 1160 900 950 A T...

Page 8: ...he IFC receives a 24 VAC signal from PS1 and PS2 when they close This verifies the vent motor is moving the correct amount of combus tion air through the furnace and the vent system 7 IFC starts the h...

Page 9: ...e outdoor unit is a 2 stage system the factory setting is 50 of the 2nd stage cooling cfm If the outdoor unit is a 24 volt single stage cooling system the factory setting is 50 of the cooling cfm NOTE...

Page 10: ...and PS3 pressure switch contacts are open the IFC signals the variable speed inducer drive to start the vent motor at the speed needed to close pressure switches PS1 and PS2 Note The furnace lights at...

Page 11: ...nter button e When asked Are You Sure select Yes and push the Enter button f The furnace will now begin the ignition sequence g If pressure switch 1 2 learning routines have not been performed after s...

Page 12: ...10 0 0 5 100 2 1 0 5 Not Adjustable 10 0 0 5 Downflow 120 2 1 0 5 Not Adjustable 10 0 0 5 Upflow 120 2 9 0 5 Not Adjustable 10 0 0 5 For upflow 120KBTU hr model 1st stage is 45 Manifold pressures appl...

Page 13: ...btain the correct mani fold pressure See Figure 7 100 HIGH HEAT ADJUSTMENT COUNTERCLOCKWISE TO DECREASE MANI FOLD PRESSURE OR CLOCKWISE TO IN CREASE MANIFOLD PRESSURE l Use Manifold Pressure Settings...

Page 14: ...cle and then push the Enter button and then the 6 button Start and NO NO will now be displayed With a NO NO question being asked use the 3or4 arrows to select the YES and then press the ENTER button A...

Page 15: ...ycle The IFC now starts the igniter warm up cycle Near the end of the warm up cycle the furnace IFC will turn on the gas valve NOTE The furnace lights at approximately 65 of capacity When the burner f...

Page 16: ...h heat When the furnace IFC receives a digital signal for 100 high heat from the comfort control it will begin the PS 3 inducer learning routine The furnace will start the heating cycle in 65 medium h...

Page 17: ...ve any yellow tipped flames This condition indicates that a service call is re quired For best operation burners must be cleaned annually using brushes and vacuum cleaner NOTE On LP propane units due...

Page 18: ...SF 1H Service Facts UHM WIRING DIAGRAM CAUTION Label all wires prior to disconnection when servicing con trols Wiring errors can cause improper and dangerous op eration Verify proper operation after...

Page 19: ...1H 19 Service Facts UHM SCHEMATIC DIAGRAM CAUTION Label all wires prior to disconnection when servicing con trols Wiring errors can cause improper and dangerous op eration Verify proper operation afte...

Page 20: ...SF 1H Service Facts DHM WIRING DIAGRAM CAUTION Label all wires prior to disconnection when servicing con trols Wiring errors can cause improper and dangerous op eration Verify proper operation after...

Page 21: ...1H 21 Service Facts DHM SCHEMATIC DIAGRAM CAUTION Label all wires prior to disconnection when servicing con trols Wiring errors can cause improper and dangerous op eration Verify proper operation afte...

Page 22: ...59 56 Watts 57 90 129 127 177 CFM 661 704 717 673 696 Temp Rise 54 51 50 53 51 Watts 71 106 148 146 207 CFM 772 809 819 774 789 Temp Rise 46 44 44 46 45 Watts 99 136 184 176 253 CFM 757 794 805 760 77...

Page 23: ...Rise 58 56 54 53 53 Watts 113 107 111 113 133 CFM 813 841 864 880 890 Temp Rise 55 53 52 51 50 Watts 108 107 122 135 160 CFM 863 889 910 923 930 Temp Rise 52 50 49 49 48 Watts 104 108 135 160 191 CFM...

Page 24: ...s 129 182 232 284 333 CFM 972 1015 972 957 1036 Watts 160 213 262 312 374 CFM 1057 1078 1085 1085 1078 Watts 191 249 306 360 415 CFM 1115 1137 1142 1140 1139 Watts 214 275 333 388 447 CFM 832 885 894...

Page 25: ...1050 Watts 170 224 274 322 372 CFM 1170 1181 1184 1180 1174 Watts 206 262 317 370 423 CFM 1268 1276 1270 1199 1224 Watts 254 314 372 430 484 CFM 1321 1321 1306 1295 1251 Watts 287 351 415 477 518 CFM...

Page 26: ...17 CFM 1297 1304 1299 1290 1275 Watts 234 288 345 402 455 CFM 1404 1409 1402 1393 1377 Watts 281 340 400 462 520 CFM 1512 1514 1505 1495 1478 Watts 336 399 464 530 595 CFM 1583 1584 1574 1564 1546 Wat...

Page 27: ...427 503 581 655 711 CFM 1801 1807 1797 1775 1743 Watts 483 563 642 712 768 CFM 1444 1458 1454 1440 1417 Watts 273 336 405 475 530 CFM 1546 1557 1552 1535 1510 Watts 324 391 465 538 594 CFM 1648 1657 1...

Page 28: ...9 483 493 Temp Rise 46 46 44 44 43 Watts 28 52 73 92 118 CFM 499 497 516 518 526 Temp Rise 42 42 41 41 40 Watts 33 58 79 100 127 CFM 553 551 567 567 571 Temp Rise 38 38 37 37 37 Watts 42 68 90 114 144...

Page 29: ...se 55 52 56 57 57 Watts 85 108 153 188 226 CFM 911 959 889 872 878 Temp Rise 52 50 53 54 54 Watts 94 117 165 201 240 CFM 994 1047 977 964 969 Temp Rise 48 45 49 49 49 Watts 116 140 191 230 272 CFM 121...

Page 30: ...186 236 287 337 CFM 1003 1000 990 975 950 Watts 183 222 274 326 375 CFM 1075 1073 1059 1041 1011 Watts 220 263 314 364 408 CFM 1123 1121 1104 1084 1052 Watts 248 294 341 389 427 CFM 877 875 872 861 84...

Page 31: ...34 1137 1129 1114 Watts 221 272 319 366 411 CFM 849 865 873 872 864 Watts 113 156 196 235 276 CFM 915 928 935 932 923 Watts 134 179 221 261 303 CFM 980 992 997 993 982 Watts 158 205 248 290 333 CFM 10...

Page 32: ...1292 1274 1248 1218 1182 Watts 286 344 392 439 500 CFM 1397 1378 1349 1316 1277 Watts 346 401 446 489 548 CFM 1501 1481 1451 1415 1373 Watts 411 463 503 541 595 CFM 1571 1550 1518 1481 1437 Watts 457...

Page 33: ...2 CFM 1592 1683 1612 1628 1629 Watts 415 454 554 634 728 CFM 1704 1802 1731 1751 1753 Watts 507 548 667 761 877 CFM 1778 1882 1810 1833 1836 Watts 577 617 753 857 991 CFM 1452 1534 1463 1474 1473 Watt...

Page 34: ...MSMTCH ERR 139 139 Communication Failure Communication Message has been detected while configured for 24V Mode Solid ON Device count CNTRL FAULT ERR 18 18 Control Failure Internal control failure None...

Page 35: ...so are displayed on the User Interface menu using a descriptive text message and on the comfort control display using an alert code number A com plete list of the alert codes is included with the comf...

Page 36: ...8 Flash Troubleshooting Low Flame Sense Error 48 9 Flash Troubleshooting Inducer Limit 49 10 Flash Troubleshooting Blower Comm and System Comm Errors 50 10 Flash Troubleshooting No System Clock and 2...

Page 37: ...UHM DHM SF 1H 37 Service Facts...

Page 38: ...niter or Triac Error 7 External Gas Valve Circuit Error Voltage present when it should not be 8 Low Flame Sensor Less than 1 dc micro amp 9 Open Inducer Limit 10 Communiction Error Loss of communicati...

Page 39: ...UHM DHM SF 1H 39 Service Facts...

Page 40: ...essure Check operation Turn Low Heat adjustment screw one turn CCW YES Is inlet gas pressure above 14 WC Correct inlet gas pressure Check operation YES Connect differential manometer per Installer s G...

Page 41: ...UHM DHM SF 1H 41 Service Facts...

Page 42: ...ure switch is not the problem Note Verify all wiring and pressure switch tubing to pressure switches is correct per the diagrams found in the Service Facts Note 2 Measured pressure is negative greater...

Page 43: ...bove max limit YES Check for loose insulation or other objects within furnace air stream NO Is outlet manifold gas pressure within specifications YES Correct gas pressure Check operation NO Is tempera...

Page 44: ...d long horizontal runs or slope less than per linear foot Correct as needed NO Is flue piping restricted Correct as needed Check operation YES Are flames from burners impinging on sides of heat exchan...

Page 45: ...ace Is there a drip leg installed on inlet gas piping per installation instructions Using a back up wrench install new gas valve Check operation Inspect gas supply for leaks and have gas supplier chec...

Page 46: ...er to furnace YES Reverse 120 vac power leads to furnace wiring Reconnect power Check operation Connect volt meter to black incoming and chassis ground at burner box NO Does meter read 120 vac Disconn...

Page 47: ...UHM DHM SF 1H 47 Service Facts...

Page 48: ...sent Scroll through User Interface to View number 1 of Last 4 Faults User Interface shows EXT GV ERR Is 24VAC nominal voltage present at gas valve connections to chassis ground Red wire to Ground Blue...

Page 49: ...UHM DHM SF 1H 49 Service Facts...

Page 50: ...s 9 Flash Fault LED User Interface shows IND LIMIT Disconnect electrical power from unit remove wiring from the limit Does COLD switch ohm out closed Zero Ohms Replace limit switch Check operation NO...

Page 51: ...UHM DHM SF 1H 51 Service Facts...

Page 52: ...ailure Replace IFC Check operation The mode of operation has been changed to 24VAC Change mode of operation to COMM Check operation User Interface shows 24V COMM MSMTCH See user interface menu in Serv...

Page 53: ...UHM DHM SF 1H 53 Service Facts NOTES...

Page 54: ...ovement it reserves the right to change design and specifications without notice Trane 6200 Troup Highway Tyler TX 75707 For more information contact your local dealer distributor Literature Order Num...

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