Daikin APGM3 Service And Troubleshooting Download Page 1

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Service and Troubleshooting

A/GPGM3 13.4 SEER2 & A/GPGM5 15.2 Gas-Electric

Package Units with R-410A Refrigerant

RS6300012r8

September 2022

TABLE OF CONTENTS

IMPORTANT INFORMATION ............................................ 2

PRODUCT IDENTIFICATION ........................................... 4

SYSTEM OPERATION ...................................................... 6

SCHEDULED MAINTENANCE ....................................... 12

SERVICING ..................................................................... 14

CHECKING VOLTAGE ............................................... 14

CHECKING WIRING ................................................... 14

CHECKING THERMOSTAT AND WIRING ................. 14

CHECKING TRANSFORMER AND

CONTROL CIRCUIT .................................................... 15

CHECKING CONTACTOR AND/OR RELAYS ............ 15

CHECKING CONTACTOR CONTACTS ...................... 16

CHECKING FAN RELAY CONTACTS ......................... 16

CHECKING HIGH PRESSURE CONTROL ................ 16

CHECKING LOW PRESSURE CONTROL ................. 17

CHECKING CAPACITOR ............................................ 17

TESTING START RELAY KITS ................................... 17

CAPACITANCE CHECK (MFD) ................................... 18

CHECKING FAN AND BLOWER MOTOR WINDINGS

(PSC MOTORS) .......................................................... 18

CHECKING ECM MOTOR WINDINGS ....................... 18

CHECKING EEM MOTORS ........................................ 19

CHECKING ECM MOTORS ........................................ 19

CHECKING ECM MOTOR WINDINGS ....................... 20

CHECKING COMPRESSOR ....................................... 20

RESISTANCE TEST .................................................... 21

GROUND TEST .......................................................... 21

UNLOADER TEST PROCEDURE ............................. 22

OPERATION TEST...................................................... 22

LOCKED ROTOR TEST ............................................. 23

TESTING CRANKCASE HEATER (OPTIONAL ITEM) 23

REFRIGERATION REPAIR PRACTICE ...................... 23

STANDING PRESSURE TEST (RECOMMENDED

BEFORE SYSTEM EVACUATION) ............................. 23

LEAK TESTING

(NITROGEN OR NITROGEN-TRACED) ..................... 24

SYSTEM EVACUATION .............................................. 24

DEEP VACUUM METHOD (RECOMMENDED) ......... 24

Pride and workmanship go into every product to provide

our customers with quality products. It is possible, however,

that during its lifetime a product may require service.

Products should be serviced only by a qualified service

technician who is familiar with the safety procedures

required in the repair and who is equipped with the proper

tools, parts, testing instruments and the appropriate service

manual.

REVIEW ALL SERVICE INFORMATION IN THE

APPROPRIATE SERVICE MANUAL BEFORE

BEGINNING REPAIRS.

Only personnel that have been trained to install, adjust,

service, maintenance or repair (hereinafter, “service”)

the equipment specified in this manual should service the

equipment. The manufacturer will not be responsible for

any injury or property damage arising from improper

service or service procedures. If you service this unit, you

assume responsibility for any injury or property damage

which may result. In addition, in jurisdictions that require

one or more licenses to service the equipment specified in

this manual, only licensed personnel should service the

equipment. Improper installation, adjustment, servicing,

maintenance or repair of the equipment specified in this

manual, or attempting to install, adjust, service or repair

the equipment specified in this manual without proper

training may result in product damage, property damage,

personal injury or death.

WARNING

Do not bypass safety devices.

Summary of Contents for APGM3

Page 1: ...ur customers with quality products It is possible however that during its lifetime a product may require service Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools parts testing instruments and the appropriate service manual REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE S...

Page 2: ...Not a technical assistance line for dealers Your telephone company will bill you for the call TRIPLE EVACUATION METHOD ALTERNATE 25 CHARGING 25 CHECKING COMPRESSOR EFFICIENCY 25 REFRIGERANT CHARGE CHECK 25 UNITS WITH FIXED ORIFICE DEVICES 25 SUPERHEAT 26 UNITS WITH TXV DEVICE 26 SUBCOOLING 26 THERMOSTATIC EXPANSION VALVE 27 OVERFEEDING 27 UNDERFEEDING 27 CHECKING EXPANSION VALVE OPERATION 30 FIXED...

Page 3: ...of refrigerants WARNING The compressor POE oil for R 410A units is extremely susceptible to moisture absorption and could cause compressor failure Do not leave system open to atmosphere any longer than necessary for installation WARNING To avoid possible explosion Never apply flame or steam to a refrigerant cylinder If you must heat a cylinder for faster charging partially immerse it in warm water...

Page 4: ...gerant 4 R 410A Heat Input 040 40 MBTU H 080 80 MBTU H 120 120 MBTU H 060 60 MBTU H 100 100 MBTU H 3 13 4 SEER2 Tonnage Nominal 5 15 2 SEER2 24 2 tons 42 3 tons 30 2 tons 48 4 tons 36 3 tons 61 5 tons A P G M 3 36 080 4 1 A A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Brand Minor Revision A Amana Brand A Major Revision A Product Category Electrical P Packaged Unit 1 208 230V single phase 60 Hz Unit Type Ref...

Page 5: ...hite Rodgers gas valves GPG1430 M41BA Goodman Brand Package Gas 14 Seer R410A Multi Position gas electric units Release of single phase models with Rechi compressor GPG1436 M41BA Goodman Brand Package Gas 14 Seer R410A Multi Position gas electric units Release of single phase models with Rechi compressor Single Phase Package Gas Units Package Gas Units Model Description A GPG16 24 48 M41AA Amana B...

Page 6: ...ugh the tubes and fins of the coil The refrigerant now becomes saturated part liquid part vapor and then continues to give up heat until it condenses to a liquid alone Once the vapor is fully liquefied it continues to give up heat which subcools the liquid and it is ready to repeat the cycle Heating The heating cycle is accomplished by using a unique tubular design heat exchanger which provides ef...

Page 7: ...ng the LED and begins timing the 15 second pre purge period NOTE Under normal operation the LED will not flash if the pressure switch closes immediately after energizing the induced draft motor 3 IGNITION The control energizes the gas valve and spark If flame is not established within 7 seconds the gas valve and spark are de energized and the control goes to an inter purge If flame is established ...

Page 8: ...gized when flame is detected 5 Flame is achieved and detected during trial for ignition period Flame stabilization period begins when flame is detected 6 De energize high stage gas valve and switch induced draft blower to low speed within five seconds of flame detection 7 Air circulating blower is energized at low heat speed after heat ON delay time expires Heat ON delay timer begins when flame is...

Page 9: ...peed after cool ON delay expires Cool ON delay timer begins when thermostat inputs are detected Control monitors thermostat gas valve flame and IDT ODT Pressure Loss of Charge Switches during high stage cooling operation Thermostat Y1 and Y2 or Y1 Y2 and G inputs are removed Low and high stage compressor outputs are de energized High speed condenser fan motor is de energized 4 Air circulating blow...

Page 10: ...wer Line 2 L2 Induced Draft Blower Line 2 L2 Condenser Fan Motor Line 2 L2 Direct Spark Igniter T1 Flame Detection FS Table 3 High Voltage Terminals Period Timing Pre Purge 15 Seconds Inter Purge 30 Seconds Post Purge 30 Seconds Trial for Ignition TFI 7 Seconds Flame Stabilization Period 10 Seconds 2 Seconds within Flame Stabilization Period 2 Seconds or Per ANSI Z21 20 Outside of Flame Stabilizat...

Page 11: ...restrictor orifice assembly may be used depending on model refer to the parts catalog for the model being serviced Restrictor Orifice Assembly in Cooling Operation In the cooling mode the orifice is pushed into its seat forcing refrigerant to flow through the metered hole in the center of the orifice ...

Page 12: ...d run a Heating Performance Test If the results of the test are not satisfactory see the Servicing sections for the possible cause Test Equipment Proper test equipment for accurate diagnosis is as essential as regular hand tools The following is a must for every service technician and service shop 1 Thermocouple type temperature meter measure dry bulb temperature 2 Sling psychrometer measure relat...

Page 13: ...n five 5 percent of the nameplate rating of the unit adjust the gas valve pressure regulator or resize orifices To adjust the pressure regulator on the gas valve turn downward clockwise to increase pressure and input and upward counterclockwise to decrease pressure and input A properly operating unit must have the BTU per hour input and CFM of air within the limits shown to prevent short cycling o...

Page 14: ...e power sources may be present Failure to do so may cause property damage personal injury or death 1 Check wiring visually for signs of overheating damaged insulation and loose connections 2 Use an ohmmeter to check continuity of any suspected open wires 3 If any wires must be replaced replace with comparable gauge and insulation thickness BRANCH CIRCUIT AMPACITY 15 20 25 30 35 40 45 50 SUPPLY WIR...

Page 15: ... WARNING High Voltage Disconnect all power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death A step down transformer 208 240 volt primary to 24 volt secondary is provided with each unit This allows ample capacity for use with resistance heaters The outdoor sections do not contain a transformer WARNING Disconnect...

Page 16: ...should read the same as L1 to L2 in step A If voltage readings are not the same as step A replace contactor If a no voltage reading is obtained replace the contactor Checking Fan Relay Contacts The fan relays are incorporated into the control board See Testing Ignition Control Module for checking control board Checking High Pressure Control WARNING High Voltage Disconnect all power before servicin...

Page 17: ... torque The start capacitor is of the electrolytic type rather than metallized polypropylene as used in the run capacitor A switching device must be wired in series with the capacitor to remove it from the electrical circuit after the compressor starts to run Not removing the start capacitor will overheat the capacitor and burn out the compressor windings These capacitors have a 15 000 ohm 2 watt ...

Page 18: ...ultiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Remove the motor leads from its respective connection points and capacitor if applicable 2 Check the continuity between each of the motor leads 3 Touch one probe of the ohmmeter to the motor frame ground and the other probe in turn to each lead If the windings do not test continuous or a read...

Page 19: ...ections 1 4 EEM Motor Connections Checking ECM Motors An ECM is an Electronically Commutated Motor which offers many significant advantages over PSC motors The ECM has near zero rotor loss synchronous machine operation variable speed low noise and programmable air flow Because of the sophisticated electronics within the ECM motor some technicians are intimated by the ECM motor however these fears ...

Page 20: ...onnect the 5 pin and the 16 pin connectors from the ECM power head 2 Remove the 2 screws securing the ECM power head and separate it from the motor 3 Disconnect the 3 pin motor connector from the power head and lay it aside 4 Using an ohmmeter check the motor windings for continuity to ground pins to motor shell If the ohmmeter indicates continuity to ground the motor is defective and must be repl...

Page 21: ...h 1 Remove the leads from the compressor terminals WARNING See warnings before removing compressor terminal cover 2 Using an ohmmeter test continuity between terminals S R C R and C S Testing Compressor Windings If either winding does not test continuous replace the compressor NOTE If an open compressor is indicated allow ample time for the internal overload to reset before replacing compressor Gr...

Page 22: ...essor must be replaced 4 Next check the molded plug a Voltage check Apply control voltage to the plug wires 18 to 28 volt ac The measured dc volt age at the female connectors in the plug should be around 15 to 27 vdc b Resistance check Measure the resistance from the end of one molded plug lead to either of the two female connectors in the plug One of the connectors should read close to zero ohms ...

Page 23: ...wer before servicing 1 Disconnect the heater lead in wires 2 Using an ohmmeter check heater continuity should test continuous If not replace Refrigeration Repair Practice DANGER Always remove the refrigerant charge in a proper manner before applying heat to the system When repairing the refrigeration system WARNING Disconnect ALL power before servicing 1 Never open a system that is under vacuum Ai...

Page 24: ... is evacuated WARNING REFRIGERANT UNDER PRESSURE Failure to follow proper procedures may cause property damage personal injury or death NOTE Scroll compressors should never be used to evacuate or pump down a heat pump or air conditioning system CAUTION Prolonged operation at suction pressures less than 20 PSIG for more than 5 seconds will result in overheating of the scrolls and permanent damage t...

Page 25: ...ount of refrigerant See the unit nameplate for the correct refrigerant charge amount An inaccurately charged system will cause future problems 1 Using a charging scale weigh in the refrigerant charge amount listed on unit nameplate Allow liquid refrigerant only to enter the high side 2 After the system will take all it will take close the valve on the high side of the charging manifold 3 Start the...

Page 26: ...ended to check unit superheat at the evaporator coil suction line Checking Subcooling Refrigerant liquid is considered subcooled when its temperature is lower than the saturation temperature corresponding to its pressure The degree of subcooling equals the degrees of temperature decrease below the saturation temperature at the existing pressure Procedure 1 Attach an accurate thermometer or prefera...

Page 27: ...ide to equalize during the shut down period The valve will shut off completely at approximately 100 PSIG Pressure Good thermal contact between the feeler bulb and the suction line is essential to satisfactory valve control and performance The bulb must be securely fastened to a clean straight section of the suction line Application of the bulb to a horizontal run of line is preferred If a vertical...

Page 28: ... 60 8 6 162 0 57 0 264 0 87 4 366 0 110 4 468 0 129 0 600 0 149 0 62 10 0 164 0 57 7 266 0 87 9 368 0 110 8 470 0 129 3 604 0 149 5 64 11 3 166 0 58 4 268 0 88 4 370 0 111 2 472 0 129 7 608 0 150 1 66 12 6 168 0 59 0 270 0 88 9 372 0 111 6 474 0 130 0 612 0 150 6 68 13 8 170 0 59 8 272 0 89 4 374 0 112 0 476 0 130 3 616 0 151 2 70 15 1 172 0 60 5 274 0 89 9 376 0 112 4 478 0 130 7 620 0 151 7 72 1...

Page 29: ...9 88 86 84 82 80 78 308 90 88 86 84 82 80 317 92 90 88 86 84 82 326 94 92 90 88 86 84 335 96 94 92 90 88 86 345 98 96 94 92 90 88 354 100 98 96 94 92 90 364 102 100 98 96 94 92 374 104 102 100 98 96 94 384 106 104 102 100 98 96 395 108 106 104 102 100 98 406 110 108 106 104 102 100 416 112 110 108 106 104 102 427 114 112 110 108 106 104 439 116 114 112 110 108 106 450 118 116 114 112 110 108 462 1...

Page 30: ...cle the high side pressure bleeds to the low side through the fixed orifice restriction device Check equalization time as follows 1 Attach a gauge manifold to the suction and liquid line dill valves 2 Start the system and allow the pressures to stabilize 3 Stop the system and check the time it takes for the high and low pressure gauge readings to equalize If it takes more than seven 7 minutes to e...

Page 31: ...ure of the replacement compressor and or spread contaminants throughout the system damaging additional components The suction line filter drier should be installed as close to the compressor suction fitting as possible The filter must be accessible and be rechecked for a pressure drop after the system has operated for a time It may be necessary to use new tubing and form as required NOTE At least ...

Page 32: ...ge leads to the speed termi nal block on the motor NOTE Heating airflow must be adjusted to pro vide the temperature rise shown on rating plate Heating White Lead Cooling Yellow Lead T1 Low Speed T4 Low Speed T2 Medium Speed T5 High Speed T3 High Speed The APGM5 24 48 models are equipped with ECM circulating blower motors the blower speed is adjusted using the DIP switches on the ECM interface mod...

Page 33: ...p or dip switch setting for direct drive units 4 Take motor amperage draw to determine that the motor is not overloaded during adjustments RETURN SUPPLY SUPPLY T RETURN T RISE SUPPLY T RETURN T Checking Temperature Rise Testing Primary Limit Control APG GPG units use a snap disk type primary limit device Sometimes referred to as stat on a stick The limit setting is fixed and must not be readjusted...

Page 34: ...additional limit primary limit control is required for safety control of high temperature within the furnace or ductwork AUX LIMIT WARNING High Voltage Disconnect all power before servicing or installing Multiple power sources may be present Failure to do so may cause property damage personal injury or death 1 Remove the wires from the auxiliary limit control terminals 2 Using an ohmmeter test for...

Page 35: ...ervicing procedure with furnace not firing 1 Confirm that the outer door was in place and all screws tightened No leaks under the door 2 Check to see if any damage was done to the furnace especially the wiring 3 Confirm that heat exchanger is not obstructed by feeling for discharge air from the flue hood when the combustion blower is running but the unit is not firing If the above steps do not sug...

Page 36: ...Ensure gas valve and main gas supply are on 2 Using a voltmeter check for 24 volts as noted below for 1 and 2 stage gas valves a For 1 stage gas valves check from the purple and blue wires b For 2 stage gas valves check from C and M terminals on the valve 3 If 24 volts are present and no gas flows through the valve replace valve W R36J22 202 White Rodgers Model 36G22 1 Stage Gas Valve W R36G54 238...

Page 37: ...anifold pressures should be checked and adjusted in accordance to the type of fuel being consumed NOTE Use adapter kit 0151K00000S to measure gas pressure on White Rodgers 36G22 and 36G54 gas valves WARNING Disconnect Gas and electrical power supply 1 Connect a digital manometer or adequate gauge to the inlet pressure fitting of the gas valve 2 Remove the pressure tap fitting at the manifold if pr...

Page 38: ...s caused by the burning speed being greater than the gas air flow velocity coming from a burner port Flashback may occur at the moment of ignition after a burner heats up or when the burner turns off The latter is known as extinction pop Since the end results of flashback and delayed ignition can be the same burning in the burner venturi a definite attempt should be made to determine which has occ...

Page 39: ...ly derate with altitude Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure This can cause poor combustion and equipment failure At all altitudes the manifold pressure must be within 0 3 inches W C of that listed on the nameplate for the fuel used At all altitudes and with either fuel the air temperature rise must be within the range listed on the un...

Page 40: ...ch 4 Blinks Open Main Limit Switch Main Limit Switch Open 5 Blinks False Flame Sensed Sticking Gas Valve 6 Blinks Compressor Output Delay 3 Minute Compressor Anti Cycle Timer PCBAG123 Ignition Board Fault Codes NOTE The flash rate is 0 25 seconds on 0 25 seconds off with a 2 second pause between codes 3 2 1 6 5 4 9 8 7 12 11 10 L2 L2 L2 L2 COOL HEAT UNUSED L1 L1 D1 FS Diagnostic LED Blower Off Del...

Page 41: ...ce ignition control d Voltage present at gas valve terminals C and HI replace valve Cooling Mode Indoor thermostat calling for cool 1 Check for 230 volts from L1 terminal of control module to L2 No voltage check wire connections continuity etc 2 Check for 24 volts at R and C thermostat terminals on ignition control a No voltage check 3 amp automotive type fuse on control board A blown fuse could i...

Page 42: ...positive of the meter is to terminal FS 4 Turn on Power WARNING Line voltage now present 5 With Power ON Place the unit into a heating cycle 6 As soon as flame is established a microamp reading should be evident once proof of flame microamp reading is established the hot surface ignitor will be de energized 7 The nominal microamp reading is 4 microamps 8 If the microamp current is less than 0 5 mi...

Page 43: ...A GPGM32406041 Rise Range 30 60 E S P T3 HEATING SPEED T4 COOLING SPEED T5 COOLING SPEED T2 HEATING SPEED T1 HEATING SPEED CFM WATTS RISE CFM WATTS RISE CFM WATTS RISE CFM WATTS CFM WATTS 0 1 680 61 45 840 103 37 1 035 174 30 1 202 246 1 225 276 0 2 640 72 48 795 109 39 995 184 31 1 173 251 1 185 275 0 3 605 80 51 750 117 41 960 192 32 1 143 258 1 150 289 0 4 555 89 X 710 126 43 925 205 33 1 110 2...

Page 44: ...221 60 1 175 300 52 1 358 354 1 365 440 0 4 570 98 X 985 233 X 1 140 303 54 1 319 361 1 335 440 0 5 505 107 X 940 234 X 1 100 311 56 1 277 366 1 295 456 0 6 450 115 X 895 242 X 1 055 319 58 1 232 376 1 255 456 0 7 395 118 X 845 248 X 1 010 326 X 1 176 386 1 220 465 0 8 345 126 X 785 252 X 960 335 X 1 120 395 1 180 468 A GPGM336080M41 Rise Range 30 60 E S P T1 HEATING SPEED T2 HEATING SPEED T3 HEAT...

Page 45: ...0 173 X 1 270 318 48 1 305 343 47 1 754 696 1 695 661 0 4 880 181 X 1 220 327 50 1 260 353 49 1 706 702 1 640 679 0 5 925 189 X 1 160 336 53 1 200 359 51 1 665 710 1 595 675 0 6 760 204 X 1 115 342 55 1 150 371 53 1 619 719 1 550 693 0 7 705 207 X 1 060 347 58 1 110 375 55 1 573 727 1 505 690 0 8 625 210 X 1 000 361 X 1 060 381 58 1 528 739 1 465 696 A GPGM34808041 Rise Range 30 60 E S P T3 HEATIN...

Page 46: ...1 318 302 1 955 779 2 015 850 0 4 985 194 59 1 350 341 57 1 268 313 1 913 785 1 972 858 0 5 905 199 64 1 295 351 59 1 217 326 1 871 796 1 930 864 0 6 840 215 X 1 235 359 62 1 163 341 1 828 803 1 888 875 0 7 770 218 X 1 180 371 X 1 101 347 1 788 809 1 850 885 0 8 700 229 X 1 125 386 X 1 041 358 1 742 822 1 805 889 A GPGM36110041 Rise Range 35 65 E S P T1 LOW STAGE HEATING SPEED T2 HIGH STAGE HEATIN...

Page 47: ... 50 1495 50 B 885 1320 990 45 1315 46 B 1280 1540 1240 45 1650 45 C 755 1125 900 50 1195 50 C 1085 1305 1125 50 1495 50 C 840 1250 1000 45 1330 45 C 1205 1450 1250 45 1665 45 C 920 1375 1100 41 1465 41 C 1325 1595 1375 41 1830 41 D 800 1195 X X X X D 1120 1350 X X X X D 890 1325 X X X X D 1245 1500 X X X X D 980 1460 X X X X D 1370 1650 X X X X CFM Rise CFM Rise A 1150 1305 900 63 1195 63 A 1275 1...

Page 48: ...FF 755 1125 B ON OFF 900 1195 ON OFF 805 1200 C OFF ON 1000 1330 OFF ON 840 1250 D ON ON X X ON ON 890 1325 APGM54210041 A OFF OFF 1015 1350 OFF OFF 1080 1300 B ON OFF 1125 1495 ON OFF 1160 1400 C OFF ON 1250 1665 OFF ON 1205 1450 D ON ON X X ON ON 1245 1500 APGM54810041 A OFF OFF 1015 1350 OFF OFF 1275 1450 B ON OFF 1125 1495 ON OFF 1320 1500 C OFF ON 1250 1665 OFF ON 1365 1550 D ON ON X X ON ON ...

Page 49: ...148 1349 413 1355 369 0 4 775 146 58 1095 256 55 766 156 1302 420 1300 383 0 5 710 152 63 1045 263 57 695 163 1253 428 1260 396 0 6 650 160 X 990 277 61 634 168 1203 436 1210 402 0 7 590 163 X 935 285 64 571 173 1152 442 1160 397 0 8 540 171 X 870 288 X 509 178 1102 449 1110 415 E S P T1 LOW STAGE HEATING SPEED T2 HIGH STAGE HEATING SPEED GPGM53608041 Rise Range 35 65 T3 LOW STAGE COOLING SPEED T4...

Page 50: ...3 0 66 0 2 2032 853 0 63 0 4 1858 939 0 70 0 4 1941 908 0 67 0 6 1760 990 0 74 0 6 1850 966 0 72 0 8 1668 1038 0 77 0 8 1757 1018 0 76 0 2 2369 2196 2 09 0 2 2323 929 0 88 0 4 2248 987 0 94 0 4 2245 978 0 93 0 6 2144 1024 0 97 0 6 2161 1028 0 98 0 8 2054 1070 1 02 0 8 2080 1079 1 03 Shaded area indicates air flow below 1500 SCFM 300 SCFM ton that is not recommended for High Stage cooling or heatin...

Page 51: ...fault code is 1 flash for a lockout due to failed ignition attempts or flame dropouts The integrated control will automatically reset after one hour or it can be reset by removing the thermostat signal or disconnecting the electrical power supply for over five seconds If the diagnostic LED indicates an external lockout perform the following checks Check the supply and manifold pressures Check the ...

Page 52: ...Gas Valve Closed If flame is detected with the gas valve de energized the combustion and air circulator blowers are energized The diagnostic fault code is five 5 flashes for this condition The control can be reset by removing the power supply to the unit or it will automatically reset after one hour Miswiring is the probable cause for this fault Low Flame Signal Two Stage Models ONLY Under some co...

Page 53: ...ompressor Thermostat ON OFF ON OFF ON OFF COOLING TIMING CHART ON OFF ON OFF ON OFF ON OFF OFF 100 Red Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual Off Internal Control Failure 1 Flash External Lockout 2 Flashes Pressure Switch Stuck Open 3 Flashes Pressure Switch Stuck Closed 4 Flashes Thermal Protection Device Open 5 Flashes Flame Detected with Gas Valve Cl...

Page 54: ...imes Within The Same Call For Heat 8 Flashes Indoor Outdoor Thermostat Open Cooling Only Devices Not present On All Models 9 Flashes High Pressure Loss of Charge Switch Open Cooling Only Devices Not Present On All Models Amber Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual Off No Flame Present On Normal Flame 1 Flash Low Flame Current 2 Flashes Flame Detected w...

Page 55: ...aporator and Induced Draft Motors Bearings on the air circulating blower motor condenser motor and the combustion fan motor are permanently lubricated No additional oiling is required Flame Sensor Qualified Servicer Only A drop in the flame current can be caused by a nearly invisible coating on the flame sensor This coating created by the fuel or combustion air supply can be removed by carefully c...

Page 56: ...e manifold to the burner retention bracket Remove the manifold and rotate each burner counterclockwise to remove Burner Bracket Burner Manifold Manifold Assembly 3 Remove the burners 4 Use a bottle brush to clean burner insert and inside of the burners 5 Replace burners and manifold inspect the burner assembly for proper seating of burners in retention slots 6 Reconnect electrical power and gas su...

Page 57: ...LEX 3597706 500 48926 002 ORANGE 1 X 78 GROUND 1 X 50 COLOR CODES FOR PLUG 1 8 O ORANGE GROUND G GREEN WIRE LENGTHS FOR PLUG 1 9 8 7 3 2 1 G Y2 TSTAT Y1 CONTACTOR COMMON Y1 TSTAT O 6 5 4 CC1 Y Y2 CONTACTOR CC2 1 P PURPLE Y YELLOW 4 1 2 6 5 4 1 2 6 5 Y1 Y2 W2 R G C Y1 Y2 W2 R G C COOL 1 HEAT FAN ECON PLUG PLUG ECON GMC TERMINAL BLOCK ROOM THERMOSTAT 8 8 O O RV RV REVERSING VALVE ENERGIZED IN COOLIN...

Page 58: ...ng is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 58 NOTICE The cutout speed hard start settings are factory preset Changing those settings may cause early motor failure ...

Page 59: ...L BK BK OPTIONAL LOW VOLTAGE OPTIONAL HIGH VOLTAGE FIELD INSTALLED CONTROL FIELD INSTALLED POWER NOTES 1 REPLACEMENT WIRE MUST BE THE SAME SIZE AND TYPE OF INSULATION AS ORIGINAL USE COPPER CONDUCTOR ON LY 2 FOR 208 VOLT TRANSFORMER OPERATION MOVE BLACK WI RE FROM TERMINAL 3 TO TERMINAL 2 ON TRANSFORME R 3 CRANKCASE HEATER NOT SUPPLIED ON ALL UNITS 4 FOR DIFFERENT THAN FACTORY SPEED TAP CHANGE COO...

Page 60: ... OPTIONAL SEE NOTE 3 BK BK 1 C 24V BL RD 2 TR 3 240 3 4 2 1 RD VMR BK PU PU BL PU YL 208 NOTE 2 SEE NOTE 5 RD YL BK BK OPTIONAL LOW VOLTAGE OPTIONAL HIGH VOLTAGE FIELD INSTALLED CONTROL FIELD INSTALLED POWER NOTES 1 REPLACEMENT WIRE MUST BE THE SAME SIZE AND TYPE OF INSULATION AS ORIGINAL USE COPPER CONDUCTOR ONLY 2 FOR 208 VOLT TRANSFORMER OPERATION MOVE BLACK WIRE FROM TERMINAL 3 TO TERMINAL 2 O...

Page 61: ...WIRING DIAGRAMS Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 61 APGM5 24 48 41 ...

Page 62: ...PRESSURE SWITCH RC RUN CAPACITOR RS ROLLOUT SWITCH TB TERMINAL BLOCK TR TRANSFORMER VM VENT MOTOR VMC VENT MOTOR CONTACTOR 7 Y1 YELLOW AND Y2 PURPLE ARE FACTORY WIRED TO BLOWER SPEED TAPS T1 AND T3 RESPECTIVELY W1 WHITE AND W2 BROWN ARE FACTORY WIRED TO BLOWER SPEED TAPS T2 AND T3 RESPECTIVELY IF DIFFERENT SPEEDS ARE NEEDED SEE IO MANUAL FOR FURTHER DETAIL ON BLOWER SPEED TAPS IF SUPPLY POWER IS 2...

Page 63: ...WIRING DIAGRAMS Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 63 GPGM5 24 48 41 ...

Page 64: ...tact us Amana Brand Products http www amana hac com about us contact us You can also scan the QR code on the right for the product brand you purchased to be directed to the feedback page GOODMAN BRAND AMANA BRAND 2020 2022 Daikin Comfort Technologies Manufacturing L P is a registered trademark of Maytag Corporation or its related companies and is used under license All rights reserved ...

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