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Troubleshooting
Related Manuals for Omega OTEC IEWQ-R Series
Summary of Contents for Omega OTEC IEWQ-R Series
- Page 1 IEWQ(HQ)-R Series High Wall Inverter Service Manual...
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Page 2: Table Of Contents
Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Troubleshooting ....................2 2.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ....2 2.2 Procedure of Troubleshooting ................10 2.3 Troubleshooting for Normal Malfunction ............24 3. Removal Procedure ..................26 3.1 Removal Procedure of Indoor Unit ..............26... -
Page 3: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit IEWQ036J3A-RWI100 Outdoor Unit ICHQ036J3A-RLH100 Remote Controller: Technical Information... -
Page 4: Troubleshooting
Service Manual 2. Troubleshooting 2.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes... - Page 5 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 6 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 7 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 8 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 9 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
- Page 10 Service Manual 1.Main board of indoor unit is damaged; Loads operate normally, 2.Detection board is Malfunction while the unit can’t be damaged; of detecting normally controlled by 3.The connection between plate(WIFI ) indoor unit and detection board is not good; Heating indicator Not the error code.
- Page 11 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible reasons: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser;the system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation;...
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Page 12: Procedure Of Troubleshooting
Service Manual 2.2 Procedure of Troubleshooting Indoor unit (1) Malfunction of Temperature Sensor F1, F2 Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● 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 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly.
- Page 14 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ●...
- Page 15 Service Manual (4) Malfunction of detecting plate(WIFI) JF 5. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 16 Service Manual (5) Communication malfunction (E6) Troubleshooting for E6 malfunction Disconnect power and check if the connection wire of indoor and outdoor units and the built-in wire of electric box are correctly connected. Connect the wire properly according Is malfunction Correct connection? to the wiring eliminated?
- Page 17 Service Manual Outdoot Unit (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged? Fault diagnosis process: Turn on the unit...
- Page 18 Service Manual (2).IPM protection, phase current overcurrent (the control board as below indicates the control board 2. IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting:...
- Page 19 Service Manual (3)High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Is outdoor ambient temperature in normal range? Are the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit is good? Fault diagnosis process: Overheat and high temperature protection...
- Page 20 Service Manual (4) Start-up failure (following AP1 for outdoor unit control board) Mainly detect: Whether the compressor wiring is connected correct? Is compressor broken? Is time for compressor stopping enough? Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
- Page 21 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Whether the system pressure is too high? Whether the input voltage is too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation...
- Page 22 Service Manual (6)Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: Wether the PMV is connected well or not? Is PMV damaged? Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
- Page 23 Service Manual (7) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
- Page 24 Service Manual (8) Communication malfunction:(following AP1 for outdoor unit control board) Mainly detect: Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, If is there any damage? Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? The flow chart fir malfunction detect: Start Did the equipment operate...
- Page 25 Service Manual (9) High-pressure Protection High-pressure protection Use pressure gauge to Measure if the pressure switch Replace the mainboard of measure if the pressure is is normal outdoor unit really high? Check if the operation mode of Set the correct operation Replace the pressure switch indoor unit is set properly? mode...
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Page 26: Troubleshooting For Normal Malfunction
Service Manual 2.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - 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 firmly...
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Page 28: Removal Procedure
Service Manual 3. Removal Procedure 3.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Steps Procedure 1.Before disassembly of the unit Axonometric drawing for the complete unit. 2.Remove filter panel Open the panel. Loosen the clasps on the filter. clasps Draw out two pieces of filter. - Page 29 Service Manual Steps Procedure 3.Remove display display Remove 2 screws fixing display, and then remove the filter. 4.Remove panel clasp Pull the clasps at both sides slightly, and then remove the panel. panel 5.Remove horizontal louver Remove the axial bush on the horizontal louver, and then remove the horizontal louver.
- Page 30 Service Manual Steps Procedure 6.Remove detecting plate and top cover of electric box Remove the screw fixing detecting plate and then Detecting plate remove the detecting plate. screw Note:The position of detection board(WIFI) may be different for -different models. screw Remove screws fixing the top cover of electric box.
- Page 31 Service Manual Steps Procedure 8.Remove earthing wire screw Remove earthing screws, and then remove the earthing wire. 9.Remove electric box cover clasp Loosen clasps at the left side of electric box. Loosen clasps on the right side of electric box. clasp electric box cover Remove electric box cover.
- Page 32 Service Manual Steps Procedure 10.Remove temperature sensor Pull out the indoor temperature sensor. temperature sensor 11.Remove electric box Pull out 6 sockets on PCB board. Pull out two screws on electric box. screw electric box Remove the electric box. Installation and Maintenance...
- Page 33 Service Manual Steps Procedure 12.Remove water tray water tray Pull the water tray upwards, and then remove the water tray. 13.Remove connection pipe between indoor and outdoor units Separate the connection pipe between indoor and outdoor units. connection position for indoor and outdoor units 14.Remove pipe-stopping plate Remove two screws on pipe-stopping plate for indoor unit, and then remove the pipe-stopping...
- Page 34 Service Manual Steps Procedure 16.Remove evaporator screw Remove screws between evaporator and bottom case. Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator.
- Page 35 Service Manual Steps Procedure 18.Remove cross flow blade and motor blade motor Remove screws fixing cross flow blade and motor. Remove the motor sub-assy. Separate two cross flow blade. Installation and Maintenance...
- Page 36 Service Manual Steps Procedure 19.Remove cushion rubber Remove the cushion rubber on cross flow blade. cushion rubber Remove the cushion rubber from the base. Installation and Maintenance...
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Page 37: Removal Procedure Of Outdoor Unit
Service Manual 3.2 Removal Procedure of Outdoor Unit Steps Procedure 1. Remove handle and valve cover Twist off the screws used for fixing the handle, pull Handle the handle upward to remove it.Loosen the screws fixing the valve cover and then remove it. Valve cover Remove the 3 screws connecting the top panel with the front panel and the right side... - Page 38 Service Manual Steps Procedure Remove the screws connecting the front side plate and then remove the front side panel. Remove the screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then...
- Page 39 Service Manual Steps Procedure 4. Remove fan motor Remove the nuts fixing the blade and then axial flow blade remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
- Page 40 Service Manual Steps Procedure 6.Remove Fireproof electric box Fireproof electric box Twist off the screws on fireproof electric box and then remove the fireproof electric box. 7. Remove chassis sub-assy and Isolation sheet Remove the 3 screws fixing the isolationsheet and then remove the Isolation sheet.
- Page 41 Service Manual Steps Procedure 9. Remove compressor compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. 10.Remove condenser sub-assy support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support(condenser). condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy.
- 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 Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...
- Page 44 Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor (15K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009...
- Page 45 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 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...
- Page 46 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 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...
- Page 47 OMEGA IEWQ(HQ) High Wall Inverter Service Manual info@omegavrf.com info@otecvrf.com www.omegavrf.com www.otecvrf.com IEWQ(HQ)I3A-SM1R0622...