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Regal genteq ECM Service Manual Download Page 17

GROUND

120VAC

LINE 1

120VAC

LINE 2

GROUND

NEUTRAL

120VAC

LINE 1

Figure 1

Models 2.0 / 2.3 / 2.5 / Eon

®

 / 3.0

120VAC SYSTEM

Figure 2

240VAC SYSTEM

Always disconnect the power from the system before 

removing the high voltage plug, and before reconnecting.

Models 2.0 / 2.3 / 2.5 / Eon / 3.0

WA R N I N G

14

Summary of Contents for genteq ECM

Page 1: ...ECM SERVICE GUIDE ECM SERVICE GUIDE...

Page 2: ...reconnecting Disconnect AC power from the system and make sure the blower wheel or fan blade has come to a complete stop before servicing the motor Do not operate motor without blower wheel or fan bla...

Page 3: ...ECM Service Guide HVAC SystemTroubleshooting Basics TechTips Motor Identification Chart 1 3 4 6 7 VariableSpeedMotors Premium ECM Motor Diagnostics X13 Endura ProMotors Standard ECM Motor Diagnostics...

Page 4: ...hope that this guide will provide a simple and accurate process for troubleshooting all of our motors About the Company In 1987 General Electric introduced ECM technology to the residential HVAC indu...

Page 5: ...brands they own such as Marathon Lincoln Leeson and Fasco Regal is a leading manufacturer of mechanical and electrical motion control and power generation products serving markets throughout the worl...

Page 6: ...lacement Using the ECM Service Guide Begin with the HVAC SystemTroubleshooting Basics section on the opposite page If the answer to the problem is not solved there read all of theTechTips on page 6 Af...

Page 7: ...confirm proper demands heat or cool especially on multi stage systems Use the Sequence of Operation charts and the ThermostatWiring Diagrams found in these guides to confirm proper wiring and operatio...

Page 8: ...there are no limits rollouts or safeties tripped Also check for any fault codes present on the furnace air handler or outdoor unit control boards If fault codes are present follow the manufacturer s r...

Page 9: ...ation voltage to the motor Always pull on the connector and not the wires Most connectors are also keyed Reconnecting a connector the wrong way could damage the motor When checking any plug connector...

Page 10: ...reen Motors have a heat sink here OEM Constant Speed Outdoor Fan Motor Shaft down application rounded end of control up Shaft up application remote located control Cover plate over open end of control...

Page 11: ...5 5 or less wires in the 16 pin connector Painted steel motor control Unpainted cast aluminum motor control Square motor control NOTE Early models do not have indentification stickers NOTE ECM 1 0 2...

Page 12: ...to the motor This is to allow the capacitors to dissipate for safety WA R N I N G AlwaysdisconnectthepowerfromtheHVACsystembefore removing or replacing connectors servicing the motor removingthehighv...

Page 13: ...TECINspect Service Tool TECINspect Usage Chart Troubleshooting with theTECINspect ServiceTool Module Replacement ECM Control Module ECM Motor Module Variable Speed Models 2 0 2 3 2 5 Eon 3 0 Premium E...

Page 14: ...ge in airflow between continuous fan speed and low stages of operation may be very slight depending on the size of the system If the system is operating normally in each stage then there is no problem...

Page 15: ...r has proper high voltage and ground at the 5 pin connector go to the Troubleshooting with theTECINspect ServiceTool section on page 16 If the 2 5 motor has proper high voltage and ground at the 5 pin...

Page 16: ...ge within plus or minus 10 of the nominal 120VAC or 240VAC is acceptable If the 2 0 2 3 Eon 3 0 motor has proper high voltage and ground at the 5 pin connector go to the Troubleshooting with theTECINs...

Page 17: ...EUTRAL 120VAC LINE 1 Figure 1 Models 2 0 2 3 2 5 Eon 3 0 120VAC SYSTEM Figure 2 240VAC SYSTEM Always disconnect the power from the system before removing the high voltage plug and before reconnecting...

Page 18: ...rational Growth TECMate XL TECMate PRO TECINspect Applicable Motors 2 0 2 3 EON 3 0 Model 3 0 diagnostics require a 16 4 pin adaptor1 2 Model 3 0 diagnostics may require a 16 4 pin adaptor1 TECINspect...

Page 19: ...nector locking tab easier Remove the 16 pin connector from the motor and connect the 16 pin connector from the TECINspect ServiceTool to the motor Reconnect the 5 pin AC power connector On Model 3 0 r...

Page 20: ...Reconnect the AC power to the system The green LED light on theTECINspect ServiceTool should be on when connected properly to 24VAC If the green LED light is not on there is no power to theTECINspect...

Page 21: ...or and the manufacturer s control board Perform a continuity check on each individual wire of the harness Some manufacturers use a different style connector on the control board side of the harness Fo...

Page 22: ...ly from the HVAC system if needed ONLY after the system AC power has been off for 5 minutes remove the two 2 hex head screws from the back of the control Unplug the 3 pin connector from the inside of...

Page 23: ...painted part of the end shield or x brace on model Eon 3 0 The motor passes the test if the meter indicates greater than 100k ohms MOTOR CONNECTOR 3 PIN 16 PIN 5 PIN CONNECTORS FROM MOTOR CIRCUIT BOAR...

Page 24: ...he 3 pin plug is lead 1 Resistance values should be less than 20 ohms and each of the three values should be the same plus or minus 10 If the measured resistance is outside of these parameters the mot...

Page 25: ...odel replacements some motors may need to be rotated in their mount to orient the plug connectors properly See below for model specific notes and or follow any OEM instructions included with the new c...

Page 26: ...r 4 pin communication connector and the 5 pin connector back into the motor The connectors are keyed Observe proper orientation Be certain to form a drip loop so that water cannot enter the motor by d...

Page 27: ...connectors in the control are facing down or at least between the 4 and 8 o clock position in the blower housing as it will mount into the HVAC system see figure 7 page 23 Center the blower wheel in t...

Page 28: ...m before removing or replacing connectors servicing the motor removing the high voltage plug and before reconnecting Disconnect AC power from the system and make sure the blower wheel has come to a co...

Page 29: ...anufacturer s charts Ensure the airflow settings are correct for the installed system using the manufacturer s charts If the system is operating normally in each mode there is no problem Remove the fi...

Page 30: ...R IS NOT RUNNING Check for proper high voltage and ground at the L G N connections at the motor see Figure 8 on the next page Correct any voltage issues before proceeding to the next step The X13 Endu...

Page 31: ...OUND 115VAC LINE 1 C L G N 1 2 3 4 5 230VAC MOTOR 115VAC LINE 1 115VAC LINE 2 C L G N 1 2 3 4 5 GROUND 460VAC MOTOR GROUND 277VAC LINE 1 277VAC LINE 2 C L G N 1 2 3 4 5 277VAC MOTOR GROUND 277VAC LINE...

Page 32: ...the voltage identified from the manufacturer s literature see Figures 9 and 10 on the next page If the low voltage communication is not present check the demand from the thermostat Also check the out...

Page 33: ...30 AC VOLTAGE CONTROL INPUTS AC VOLTS V COM 24 VAC C L G N 1 2 3 4 5 DC VOLTAGE CONTROL INPUTS DC VOLTS V COM 9 23 VAC C L G N 1 2 3 4 5 Figure 9 Figure 10 30...

Page 34: ...if needed ONLY after the system AC power has been off for 5 minutes remove the two 2 hex head screws from back of the control Unplug the 3 pin connector from the inside of the control by squeezing th...

Page 35: ...of the three motor leads to the unpainted part of the x brace The motor passes the test if the meter indicates greater than 100k ohms MOTOR CONNECTOR 3 PIN 4 PIN 5 PIN CONNECTORS FROM MOTOR CIRCUIT B...

Page 36: ...he 3 pin plug is lead 1 Resistance values should be less than 20 ohms and each of the three values should be the same plus or minus 10 If the measured resistance is outside of these parameters the mot...

Page 37: ...the motor was removed from Insert the 3 pin connector back into the new control module A slight click will be heard when inserted properly This connector is keyed for proper connection Attach the new...

Page 38: ...35 ECM X13 Endura Pro 2 75 BELLYBAND KEEPOUTAREA RECOMMENDED BELLYBANDAREA DO NOT COVER VENTS DRIP LOOP DRIP LOOP Connection Orientation Between 4 and 8 o clock Figure 14 Figure 15 35...

Page 39: ...onnectors in the control are facing down or at least between the 4 and 8 o clock position in the blower housing as it will mount into the HVAC system see figure 14 page 35 Center the blower wheel in t...

Page 40: ...not be used on twinned systems and should not be used on belt drive systems There are two Evergreen Models Please make sure to use the appropriate troubleshooting information See the Motor ID chart o...

Page 41: ...proper LineVoltage jumper is installed For 230VAC systems the yellow jumper should be installed For 115VAC systems the white jumper should be installed NOTE If the motor was powered with 230VAC while...

Page 42: ...firmed Confirm there is a 115VAC demand on any one or all of the High Voltage SIGNAL connections The High Voltage SIGNAL connections of the motor should only be connected to the HVAC Systems 115VAC fa...

Page 43: ...peration A Low Voltage SIGNAL demand from the HVAC Systems thermostat connection alone will not operate the motor The motor will turn on when it receives its High Voltage SIGNAL demand from the HVAC S...

Page 44: ...en the selected LowVoltage SIGNAL speed tap and the BLUE Common tap on the motor see schematic on page 40 If more or less airflow is required change this connection to a higher or lower speed tap If t...

Page 45: ...r To increase or decrease the Hp selection see the chart below HV1 HV2 1 2 1 3 Hp operation 1 2 Hp Motor HV1 1 3 1 4 Hp operation HV2 1 4 1 5 Hp operation HV1 HV2 3 4 Hp operation 1 Hp Motor HV1 3 4 1...

Page 46: ...SIGNAL connections are connected together with all the 115VAC fan outputs from the HVAC Systems controls to communicate to the motor when to turn on and at what horse power to operate at IF THE MOTOR...

Page 47: ...he problem check theTotal External Static Pressure TESP If theTESP is above 8 there is an issue with the ductwork or filter sizing that must be corrected After correcting one or more airflow restricti...

Page 48: ...one checkmark falls in each Evergreen sizing use the larger motor 1 6 1 2 Hp IMPORTANT NOTE There must be proper voltage at the High Voltage POWER and the Low Voltage Speed Tap connections for the mot...

Page 49: ...ps Green Orange Brown White orYellow and the Blue lead 24VAC common connection If there is not proper voltage at one or all of these leads during proper system demand correct the problem before the mo...

Page 50: ...grilles Replace filters with proper size according to manufacturer specs Aftermarket filters may need to be larger than the original specs If this does not correct the problem go to step 2 Step 2 Conf...

Page 51: ...st possible airflow and proceed to Step 3 Step 3 Check the system sTotal External Static Pressure Total ESP If the total ESP is higher than the system manufacturer recommends the problem is most likel...

Page 52: ...om the system and make sure the fan blade has come to a complete stop before servicing the motor Do not operate motor without fan blade attached Such operation will cause the motor speed to oscillate...

Page 53: ...ly following the manufacturer s recommendations This motor will not compensate for lack of airflow through dirty coils Confirm all fan blades are shaped the same in good condition and not rubbing on t...

Page 54: ...f the motor IS NOT receiving any communication troubleshoot the communication issue using the manufacturer s troubleshooting guides The control board in the outdoor unit will need the proper demand ca...

Page 55: ...TED RESULTS Always mount the replacement motor and control if mounted separately according to the manufacturer s specifications using all required hardware to reduce vibration Make sure all wires are...

Page 56: ...at the system is running quietly and smoothly producing proper air flow in all modes heating cooling and continuous fan and all stages if applicable Return all thermostat settings to the customer s pr...

Page 57: ...modes and stages if applicable Check the refrigerant level only after confirming proper indoor airflow as well Bent coil fins restrict airflow correct if possible without damaging the coil or other fi...

Page 58: ...for the advice given or results obtained all such advice and reviews being given and accepted are at the customer s risk For a copy of our StandardTerms and Conditions of Sale Limited Warranty and Li...

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