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Omega OTEC IEWQ Series Service Manual
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Omega OTEC IEWQ Series Service Manual

High wall inverter
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Summary of Contents for Omega OTEC IEWQ Series

  • Page 2: Table Of Contents

    Service Manual Table of Contents Part : Technical Information ...............1 1. Summary ........................1 . Troubleshooting ....................1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement .... .2 Procedure of Troubleshooting ................3 Troubleshooting for Normal Malfunction ............Removal Procedure ..................

  • Page 3: Part : Technical Information

    Service Manual Part : Technical Information 1. Summary Indoor Unit Outdoor Unit Remote Controller: Technical Information...

  • Page 4: Troubleshooting

    Service Manual . Troubleshooting .1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Installation and Maintenance...
  • Page 5 Service Manual Installation and Maintenance...
  • Page 6 Service Manual Installation and Maintenance...
  • Page 7 Service Manual Installation and Maintenance...
  • Page 8 Service Manual Installation and Maintenance...
  • Page 9 Service Manual Anti- freezing Not the error code. It’s protection the status code for the operation. evaporator Cold air Not the error code. It’s prevention the status code for the protection operation. Refrigerant recovery. The Refrigerant recovery Serviceman operates it for mode maintenance Installation and Maintenance...
  • Page 10 Service Manual 1.Main board of indoor unit is Loads operate normally, 2.Detection board is Malfunction while the unit can’t be of detecting normally controlled by 3.The connection between plate(WIFI ) indoor unit and detection Heating indicator Not the error code. It’s off for 0.5s Defrosting the status code for the...
  • Page 11 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection high. Processing method: refer to the malfunction analysis in the above section. 2. Low voltage overcurrent protection Possible reason: Sudden drop of supply voltage. 3. Communic ation malfun ction Processing method: Check if communic ation signal cable is connected reliably.

  • Page 12: Procedure Of Troubleshooting

    Service Manual .2 Procedure of Troubleshooting Indoor unit (1) Malfunction of Temperature Sensor F1, F2 Main detection points: Malfunction diagnosis process: Start Is the wiring terminal between the temperature sensor and the controller Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip- over of the parts...
  • Page 13 Service Manual (2) Malfunction of Blocked Protection of IDU Fan Motor H6 Installation and Maintenance...
  • Page 14 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: Malfunction diagnosis process: Start Appearance of the jumper cap Assemble the jumper cap with the same model Is malfunction eliminated Is the jumper cap inserted correctly Insert the jumper cap tightly Is malfunction eliminated...
  • Page 15 Service Manual (4) Malfunction of detecting plate(WIFI) JF Installation and Maintenance...
  • Page 16 Service Manual (5) Communication malfunction (E6) Installation and Maintenance...
  • Page 17 Service Manual Outdoot Unit Installation and Maintenance...
  • Page 18 Service Manual (2).IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 Installation and Maintenance...
  • Page 19 Service Manual Installation and Maintenance...
  • Page 20 Service Manual Installation and Maintenance...
  • Page 21 Service Manual Installation and Maintenance...
  • Page 22 Service Manual Installation and Maintenance...
  • Page 23 Service Manual Installation and Maintenance...
  • Page 24 Service Manual Installation and Maintenance...
  • Page 25 Service Manual (9) High-pressure Protection Installation and Maintenance...

  • Page 26: Troubleshooting For Normal Malfunction

    Service Manual .3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. If not, check power connection for power plug and the buzzer Can't give out sound supply circuit and make sure the power plug is...
  • Page 27 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram Measure the capacity of fan capacitor with an...

  • Page 28: Removal Procedure

    Service Manual . Removal Procedure Caution: discharge the refrigerant .1 Removal Procedure of Indoor Unit completely before removal. Installation and Maintenance...
  • Page 29 Service Manual Installation and Maintenance...
  • Page 30 Service Manual Installation and Maintenance...
  • Page 31 Service Manual Installation and Maintenance...
  • Page 32 Service Manual Installation and Maintenance...
  • Page 33 Service Manual Installation and Maintenance...
  • Page 34 Service Manual Installation and Maintenance...
  • Page 35 Service Manual Installation and Maintenance...
  • Page 36 Service Manual Installation and Maintenance...

  • Page 37: Removal Procedure Of Outdoor Unit

    Service Manual .2 Removal Procedure of Outdoor Unit Installation and Maintenance...
  • Page 38 Service Manual Installation and Maintenance...
  • Page 39 Service Manual Installation and Maintenance...
  • Page 40 Service Manual Installation and Maintenance...
  • Page 41 Service Manual Installation and Maintenance...
  • Page 42 Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius( Celsius( Celsius( temperature temperature temperature 60.8 69/70 69.8 78/79 78.8 62/63...
  • Page 43 Service Manual Appendix 3: Pipe Expanding Method Note: Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: A:Cut the pip B:Remove the burrs C:Put on suitable insulating pipe D:Put on the union nut the union nut on the pipe.
  • Page 44 Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor (15K) Temp( Temp( Temp( Temp( 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68 3.333...
  • Page 45 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( Temp( Temp( Temp( 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2 4.289 1.233 129.9 19.14 4.14 1.198...
  • Page 46 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( Temp( Temp( Temp( 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08 580.6 73.83 14.62 3.96 548.9 70.5...

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