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Omega OTEC IEWB Series, Service Manual

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Omega OTEC IEWB Series Service Manual Download Page 5

3

2 Specifications 

2.1 Model Reference 

Refer to the following table to determine the specific indoor and outdoor unit model number of your 
purchased equipment. 

Hygienic 

Heat pump 

Indoor unit model 

Outdoor unit model 

Capacity 

(Btu/h) 

Power supply 

IEWB009J1A-CWJ026CWA ICHB009J1A-CTJ026GFA

9K 

115V/60Hz/1Ph 

IEWB012J1A-CWJ035CWA ICHB012J1A-CTJ035GFA

12K 

IEWB009J0A-CWJ026CWA ICHB009J0A-CTJ026GFA

9K 

208~230V/

50-

60Hz/1Ph 

IEWB012J0A-CWJ035CWA ICHB012J0A-CTJ035GFA

12K 

IEWB018J2A-CWJ053CWA ICHB018J0A-CTJ053GFA

18K 

IEWB024J0A-CWJ070CWA ICHB024J0A-CTJ070GFA

24K 

Summary of Contents for OTEC IEWB Series

Page 1: ...IEWB ICHB Series 208 230V 1 50 60Hz 19 SEER Hygienic Mini Split Service Manual...

Page 2: ...or 11 2 4 8 E2 ODU Communication failure between indoor and outdoor unit 11 2 4 9 E4 E5 E6 ODU temperature sensor fault 11 2 4 10 E9 ODU AC over voltage under voltage protection 11 2 4 11 E10 ODU Outd...

Page 3: ...thorized dealer to install this air conditioner Inappropriate installation may cause water leakage electric shock or fire All repairs maintenance and relocation of the unit must be performed by an aut...

Page 4: ...ll the plug before cleaning Failure to do so can cause electrical shock Do not clean the air conditioner with excessive amounts of water Do not clean the air conditioner with combustible cleaning agen...

Page 5: ...p Indoor unit model Outdoor unit model Capacity Btu h Power supply IEWB009J1A CWJ026CWA ICHB009J1A CTJ026GFA 9K 115V 60Hz 1Ph IEWB012J1A CWJ035CWA ICHB012J1A CTJ035GFA 12K IEWB009J0A CWJ026CWA ICHB009...

Page 6: ...utes protection timer incorporated in the microcomputer actuates automatically Except that power is connected this function does not actuate Air is not blown out at starting of heating operation Air b...

Page 7: ...rely Stop after some time running Reach setting temperature In defrosting mode Timer OFF is set Strange sound in indoor unit The dust filter accumulates too much dust Please clean the dust filter in t...

Page 8: ...ult of wired controller E9 Room card port disconnected port HC When it shows E5 press to show more error code Definitions of malfunction Error code Communication failure between indoor and outdoor uni...

Page 9: ...ency limitation because of voltage LA Frequency limitation because of evaporator temperature LB Frequency limitation because of condenser temperature LC Frequency limitation because of discharge tempe...

Page 10: ...oor unit didn t receive feedback from outdoor unit within 1 minute Possible reason Bad connection of communication wire Fault indoor or outdoor unit PCB Troubleshooting and repair a Check if the wirin...

Page 11: ...diagram b Check power supply c Change a new indoor unit PCB 2 4 4 E7 IDU EEPROM error Description Indoor PCB main chip does not receive feedback from EEPROM chip Possible reason Faulty indoor unit PCB...

Page 12: ...4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V AC fan motor voltage Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of re...

Page 13: ...wer supply error Refrigerant system leakage or block Faulty outdoor unit PCB Troubleshooting and repair a Check the power supply and measure the voltage b Repower on the unit and measure the voltage b...

Page 14: ...the connection between fan motor and PCB c Change a new PCB 2 4 15 H2x Compressor fault Description An abnormal inverter compressor drive is detected by a special detection circuit including communic...

Page 15: ...kage point b Whether it is too dirty in outdoor coil Improve the ventilation condition c Check whether the fan motor can work normally 2 4 18 P5 High condenser temperature protection Description in co...

Page 16: ...or temperature T2 is lower than 0 Possible reason Filter or evaporator is dirty Indoor fan motor can t work normally or the flap is closed Troubleshooting and repair a Clear the filter and evaporator...

Page 17: ...orator temperature T2 is higher than 65 Possible reason Abnormal T2 temperature sensor Faulty 4 way valve Bad ventilation Refrigerant is not enough Troubleshooting and repair a Measure the resistance...

Page 18: ...OMEGAIEWB ICHB Certified Mini Split Service Manual info otecomega com www otecomega com info otecomega com www otecomega com IEWB CHB I J 0 1 2 A SM1G0922...

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