E12RKUA Service Manual
Page 2
....3 Outdoor Unit 38 12. Servicing Mode 70 17.1 Auto Off/On Button 70 17.2 Cooling Only Operation (Single connection Only, Multi connection please refer to Multi outdoor manual).........71 17.3 Remote Control Button 72 18. Troubleshooting Guide 73 18.1 Refrigeration Cycle System 73 18.2 Breakdown Self Diagnosis Function...........75 18.3 Error Code Table 76 18.4 Self-diagnosis Method 78 19. Specification 5 3. Wiring Connection Diagram 20 8.1 Indoor Unit 20 8.2 Outdoor Unit 22 9. Electronic Circuit Diagram 24 9.1 Indoor Unit 24 9.2 Outdoor Unit 26 10. Installation Instruction...
....3 Outdoor Unit 38 12. Servicing Mode 70 17.1 Auto Off/On Button 70 17.2 Cooling Only Operation (Single connection Only, Multi connection please refer to Multi outdoor manual).........71 17.3 Remote Control Button 72 18. Troubleshooting Guide 73 18.1 Refrigeration Cycle System 73 18.2 Breakdown Self Diagnosis Function...........75 18.3 Error Code Table 76 18.4 Self-diagnosis Method 78 19. Specification 5 3. Wiring Connection Diagram 20 8.1 Indoor Unit 20 8.2 Outdoor Unit 22 9. Electronic Circuit Diagram 24 9.1 Indoor Unit 24 9.2 Outdoor Unit 26 10. Installation Instruction...
E12RKUA Service Manual
Page 3
... specified parts for installation and servicing. For electrical work , it will cause the set to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for power supply cord. Use the specified indoor/outdoor connection cable, refer to fall, water leakage, fire or electrical shock. 7. Wire routing must be properly arranged so that no external force will cause electrical shock or fire. 17. air etc. mix into refrigeration cycle (piping...
... specified parts for installation and servicing. For electrical work , it will cause the set to installation instruction CONNECT THE CABLE TO THE INDOOR UNIT and connect tightly for power supply cord. Use the specified indoor/outdoor connection cable, refer to fall, water leakage, fire or electrical shock. 7. Wire routing must be properly arranged so that no external force will cause electrical shock or fire. 17. air etc. mix into refrigeration cycle (piping...
E12RKUA Service Manual
Page 4
.... It may fall down operation, stop the compressor before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will tend to the room air conditioner. If drainage is refrigerant gas leakage during installation or servicing, please wear hand glove. In case of air, abnormal high pressure in refrigeration cycle and result in case of flammable gas may need two people to a circuit breaker for permanent connection...
.... It may fall down operation, stop the compressor before run the compressor. (Operation of compressor without fixing refrigeration piping and valves at opened condition will tend to the room air conditioner. If drainage is refrigerant gas leakage during installation or servicing, please wear hand glove. In case of air, abnormal high pressure in refrigeration cycle and result in case of flammable gas may need two people to a circuit breaker for permanent connection...
E12RKUA Service Manual
Page 33
... out the drainage test, remove the air filters and pour water into consideration. Do not install the unit near the unit. There should not be any obstacles which may cause a short circuit of additional refrigerant should be 1.64 oz (50 g) .... (32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz. ((10 -7.5) m x 20 g/m = 50 g). 11.1.3 Indoor/Outdoor Unit Installation Diagram Piping direction Do not bend up (Front side) drain hose Right...
... out the drainage test, remove the air filters and pour water into consideration. Do not install the unit near the unit. There should not be any obstacles which may cause a short circuit of additional refrigerant should be 1.64 oz (50 g) .... (32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz. ((10 -7.5) m x 20 g/m = 50 g). 11.1.3 Indoor/Outdoor Unit Installation Diagram Piping direction Do not bend up (Front side) drain hose Right...
E12RKUA Service Manual
Page 39
... using a hexagonal wrench (5/32" (4 mm)). 8. If the leak stops when the piping connections are retightened, repair location of 13.3 Ibf.ft (18 N•m) with a torque wrench. 7. Be careful with torque wrench to the specified torque as stated in the table. Vacuum pump Indoor unit Liquid side Two-way valve Outdoor unit Gas side Close OPEN Lo Hi Three-way valve Close CLOSE 1. Mount...
... using a hexagonal wrench (5/32" (4 mm)). 8. If the leak stops when the piping connections are retightened, repair location of 13.3 Ibf.ft (18 N•m) with a torque wrench. 7. Be careful with torque wrench to the specified torque as stated in the table. Vacuum pump Indoor unit Liquid side Two-way valve Outdoor unit Gas side Close OPEN Lo Hi Three-way valve Close CLOSE 1. Mount...
E12RKUA Service Manual
Page 41
.... 8 ft (2.4 m) or more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist. Saddle () Conduit (Power supply cord ()) o(r3m0101orm1e3m/1)6" Conduit (Connection cable) Liquid side piping () Gas side piping () Additional drain hose Control Board cover 41 Installation Instruction (E18RK and E24RK) 12.1 Select the Best Location 12.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen...
.... 8 ft (2.4 m) or more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist. Saddle () Conduit (Power supply cord ()) o(r3m0101orm1e3m/1)6" Conduit (Connection cable) Liquid side piping () Gas side piping () Additional drain hose Control Board cover 41 Installation Instruction (E18RK and E24RK) 12.1 Select the Best Location 12.1.1 Indoor Unit Do not install the unit in excessive oil fume area such as kitchen...
E12RKUA Service Manual
Page 44
... indoor drain hose to 3/4" (20 mm) nominal PVC pipe size by Vinyl Tape ( ) Drain hose adapter 9 3/4" (20 mm) nominal PVC pipe - The inside and outside connection cable can be properly earthed. Replace the drain hose Rear view for left piping. 45° Drain hose Cable Piping (For right piping, follow the same procedure) Indoor unit drain hose Close join by using drain hose adapter 9 when necessary. Terminals on the indoor unit 123 Colour of wires (Connecting wire) Terminals on the outdoor unit...
... indoor drain hose to 3/4" (20 mm) nominal PVC pipe size by Vinyl Tape ( ) Drain hose adapter 9 3/4" (20 mm) nominal PVC pipe - The inside and outside connection cable can be properly earthed. Replace the drain hose Rear view for left piping. 45° Drain hose Cable Piping (For right piping, follow the same procedure) Indoor unit drain hose Close join by using drain hose adapter 9 when necessary. Terminals on the indoor unit 123 Colour of wires (Connecting wire) Terminals on the outdoor unit...
E12RKUA Service Manual
Page 47
... 3-way valve. 2. Turn on the power switch of the vacuum pump and make sure micron gauge a value 500 microns and close the low side valve of the charging set and the service port of the 3-way valve. 6. Make flare after inserting the flare nut (locate at a torque of leak. - If the leak stops when the piping connections are retightened, repair location of 13...
... 3-way valve. 2. Turn on the power switch of the vacuum pump and make sure micron gauge a value 500 microns and close the low side valve of the charging set and the service port of the 3-way valve. 6. Make flare after inserting the flare nut (locate at a torque of leak. - If the leak stops when the piping connections are retightened, repair location of 13...
E12RKUA Service Manual
Page 55
.../OFF Timer setting. 13.11 Indication Panel LED Color Light ON Light OFF POWER Green Operation ON Operation OFF TIMER QUIET POWERFUL Orange Orange Orange Timer Setting ON Quiet Mode ON Powerful Mode ON Timer Setting OFF Quiet Mode OFF Powerful Mode OFF AUTO COMFORT Green Auto Comfort ON Auto Comfort OFF ECONAVI Green Econavi Mode ON Econavi Mode OFF Note: If POWER LED is blinking, the possible operation of the unit are Hot Start, during the operation of air conditioner, the compressor...
.../OFF Timer setting. 13.11 Indication Panel LED Color Light ON Light OFF POWER Green Operation ON Operation OFF TIMER QUIET POWERFUL Orange Orange Orange Timer Setting ON Quiet Mode ON Powerful Mode ON Timer Setting OFF Quiet Mode OFF Powerful Mode OFF AUTO COMFORT Green Auto Comfort ON Auto Comfort OFF ECONAVI Green Econavi Mode ON Econavi Mode OFF Note: If POWER LED is blinking, the possible operation of the unit are Hot Start, during the operation of air conditioner, the compressor...
E12RKUA Service Manual
Page 56
... AUTO COMFORT Sensor Abnormality H59 (no Timer LED blinking). ECONAVI & AUTO COMFORT Sensor operation OFF, but ECONAVI and AUTO COMFORT LED maintain ON. The unit still operate as normal. Sensor error counter can be cleared only after power supply reset or AC Reset button on the remote control is pressed. ECONAVI and AUTO COMFORT Demo Mode To enable ECO DEMO mode, during unit is OFF (power standby): Remote control normal mode...
... AUTO COMFORT Sensor Abnormality H59 (no Timer LED blinking). ECONAVI & AUTO COMFORT Sensor operation OFF, but ECONAVI and AUTO COMFORT LED maintain ON. The unit still operate as normal. Sensor error counter can be cleared only after power supply reset or AC Reset button on the remote control is pressed. ECONAVI and AUTO COMFORT Demo Mode To enable ECO DEMO mode, during unit is OFF (power standby): Remote control normal mode...
E12RKUA Service Manual
Page 60
... user cancel the Powerful operation by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of the unit are running for 30 seconds to be set using remote control and the operation is decided by pressing powerful button again. 14.7 Auto restart control When the power supply is cut off during the operation of air conditioner, the compressor will resume previous mode, include unit standby mode. 14.8 Indication Panel LED Color Light ON Light OFF POWER...
... user cancel the Powerful operation by remote control setting temperature, remote control operation mode, indoor intake and outdoor air temperature. During operation mode judgment, indoor fan motor (with speed of the unit are running for 30 seconds to be set using remote control and the operation is decided by pressing powerful button again. 14.7 Auto restart control When the power supply is cut off during the operation of air conditioner, the compressor will resume previous mode, include unit standby mode. 14.8 Indication Panel LED Color Light ON Light OFF POWER...
E12RKUA Service Manual
Page 70
.../ON Mode is in order to operate air conditioner with same transmission code from remote control. Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is pressed. There are 4 types of remote control transmission code could prevent signal interference when there are 2 or more than 5 seconds. Remote Control Printed Circuit Board J1 Jumper A (J1) Short Jumper B (D2) Open Remote Control No. This operation can be selected and stored in order to set / change...
.../ON Mode is in order to operate air conditioner with same transmission code from remote control. Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is pressed. There are 4 types of remote control transmission code could prevent signal interference when there are 2 or more than 5 seconds. Remote Control Printed Circuit Board J1 Jumper A (J1) Short Jumper B (D2) Open Remote Control No. This operation can be selected and stored in order to set / change...
E12RKUA Service Manual
Page 71
..., the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode) The unit will stop and Power LED blinking. Long "beep": Turn ON remote control receiving sound. Operation mode AUTO HEAT Cooling Only Operation Mode Activated After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will turn ON by the Timer and run Cooling or DRY operation. The unit will run Cooling operation. Short "beep": Turn OFF remote control receiving sound...
..., the unit will judge the operation mode base on remote controller temperature setting and Indoor Intake Sensor (New Auto Mode) or Outdoor Intake Sensor (Old Auto Mode) The unit will stop and Power LED blinking. Long "beep": Turn ON remote control receiving sound. Operation mode AUTO HEAT Cooling Only Operation Mode Activated After 30s sampling, regardless of indoor intake or outdoor intake temperature judgement, the unit will turn ON by the Timer and run Cooling or DRY operation. The unit will run Cooling operation. Short "beep": Turn OFF remote control receiving sound...
E12RKUA Service Manual
Page 75
...; In operation after Repair (Protective Operation) 1 Turn power on (in IC memory. 18.2.2 To Make a Diagnosis 1 Timer LED starts to operate the unit. (Remote control is enable again). 2 The unit can be repeated by turning power on again. 18.2.4 To Clear Memorized Error Code after breakdown repair, the Timer LED will not blink. AUTO HEAT COOL DRY FAN FAN SPEED AIR SWING Note: Display only for 0.5 seconds and no Power LED blinking) 4 Press the TIMER ▲ or ▼ button on the remote control display...
...; In operation after Repair (Protective Operation) 1 Turn power on (in IC memory. 18.2.2 To Make a Diagnosis 1 Timer LED starts to operate the unit. (Remote control is enable again). 2 The unit can be repeated by turning power on again. 18.2.4 To Clear Memorized Error Code after breakdown repair, the Timer LED will not blink. AUTO HEAT COOL DRY FAN FAN SPEED AIR SWING Note: Display only for 0.5 seconds and no Power LED blinking) 4 Press the TIMER ▲ or ▼ button on the remote control display...
E12RKUA Service Manual
Page 96
....4.19 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is closed . Faulty indoor unit fan motor. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer. Faulty indoor pipe temperature sensor. Faulty indoor unit PCB. Is the indoor unit heat exchanger dirty? Is there any short circuit? YES...
....4.19 H99 (Indoor Freeze Prevention Protection: Cooling or Soft Dry) Error Code will not display (no Timer LED blinking) but store in EEPROM Malfunction Decision Conditions Freeze prevention control takes place (when indoor pipe temperature is closed . Faulty indoor unit fan motor. Refrigerant shortage (refrigerant leakage). Clogged expansion valve or strainer. Faulty indoor pipe temperature sensor. Faulty indoor unit PCB. Is the indoor unit heat exchanger dirty? Is there any short circuit? YES...
E18RKUA Operating Manual
Page 3
... remote control holder × 2 3 English Quick guide 1 3 Inserting the batteries 2 1 Pull out the back cover of remote control 2 Insert AAA or R03 batteries (can be used ~ 1 year) 3 Close the cover 2 3 Clock setting TIMER ON SET 1 Press CLOCK 1 2 3 2 Set the time OFF CANCEL 1 AC RC SET CHECK CLOCK RESET 3 Confirm Basic operation 1 Select the desired mode AUTO HEAT FAN DRY COOL AUTO HEAT FAN SPEED 2 Start/stop the operation COOL DRY AIR FAN SWING 2 OFF/ON AUTO ECONAVI COMFORT 3 MODE 1 TEMP POWERFUL/ QUIET FAN SPEED AIR SWING TIMER...
... remote control holder × 2 3 English Quick guide 1 3 Inserting the batteries 2 1 Pull out the back cover of remote control 2 Insert AAA or R03 batteries (can be used ~ 1 year) 3 Close the cover 2 3 Clock setting TIMER ON SET 1 Press CLOCK 1 2 3 2 Set the time OFF CANCEL 1 AC RC SET CHECK CLOCK RESET 3 Confirm Basic operation 1 Select the desired mode AUTO HEAT FAN DRY COOL AUTO HEAT FAN SPEED 2 Start/stop the operation COOL DRY AIR FAN SWING 2 OFF/ON AUTO ECONAVI COMFORT 3 MODE 1 TEMP POWERFUL/ QUIET FAN SPEED AIR SWING TIMER...
E18RKUA Operating Manual
Page 5
... pet directly to airflow to avoid injury. Do not switch ON the indoor unit when waxing the floor. To prevent malfunction or damage of the remote control: • Remove the batteries if the unit is observed. • Abnormal noise or vibration of gutters and containers, or - Before cleaning or servicing, - Connected properly, - Stop using an Earth Leakage Circuit Breaker (ELCB) or Ground Fault Interrupt...
... pet directly to airflow to avoid injury. Do not switch ON the indoor unit when waxing the floor. To prevent malfunction or damage of the remote control: • Remove the batteries if the unit is observed. • Abnormal noise or vibration of gutters and containers, or - Before cleaning or servicing, - Connected properly, - Stop using an Earth Leakage Circuit Breaker (ELCB) or Ground Fault Interrupt...
E18RKUA Operating Manual
Page 8
... and AUTO COMFORT operations will be cancelled. Note AIR SWING When manual AIR SWING is influenced by indoor unit location, movement speed, temperature range, etc. • The human activity sensor may cause sensor malfunction. 8 Detecting human presence and activity, the unit controls room temperature to give a gentle cooling operation. Multi • Unit selects operation mode every 3 hours according to suit your needs. COOL : Provides efficient comfort cooling to setting temperature, outdoor temperature and room temperature...
... and AUTO COMFORT operations will be cancelled. Note AIR SWING When manual AIR SWING is influenced by indoor unit location, movement speed, temperature range, etc. • The human activity sensor may cause sensor malfunction. 8 Detecting human presence and activity, the unit controls room temperature to give a gentle cooling operation. Multi • Unit selects operation mode every 3 hours according to suit your needs. COOL : Provides efficient comfort cooling to setting temperature, outdoor temperature and room temperature...
E18RKUA Operating Manual
Page 10
...; Clean or replace the filters. • Clear any obstruction at an incline. • Close the front panel properly. Noisy during HEAT mode • The unit is in plastic parts, accelerated when exposed to with signal transmitter. control. • Water leaks from the • Make sure the receiver is closed). fan speed setting. operation. POWER indicator blinks before calling for the switched on. operation when the ON timer...
...; Clean or replace the filters. • Clear any obstruction at an incline. • Close the front panel properly. Noisy during HEAT mode • The unit is in plastic parts, accelerated when exposed to with signal transmitter. control. • Water leaks from the • Make sure the receiver is closed). fan speed setting. operation. POWER indicator blinks before calling for the switched on. operation when the ON timer...
E18RKUA Installation Manual
Page 1
... not release refrigerant during operation. Remove the air filters. 3. Front grille When reinstalling the front grille, first set and turn over the unit to prevent direct sunlight or rain, be careful that control board cover is not perfect, water may cause toxic gas when the refrigerant comes into the heat exchanger. This can be Yellow/Green (Y/G) in instructions. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is...
... not release refrigerant during operation. Remove the air filters. 3. Front grille When reinstalling the front grille, first set and turn over the unit to prevent direct sunlight or rain, be careful that control board cover is not perfect, water may cause toxic gas when the refrigerant comes into the heat exchanger. This can be Yellow/Green (Y/G) in instructions. AUTO OPERATION MODE The Auto operation will be activated immediately once the Auto Switch is...