Service Manual
Page 3
... for outdoor unit Air Conditioner 1.2 Brief Introduction for T1、T2、T3 working condition Type of Conditioner Cooling Only Heat pump Air T1 18 ℃~43℃ -7℃~43℃ Electricity Heating ~43℃ Climate type T2 10℃~35℃ -7℃~35℃ ~35℃ T3 21℃~52℃ -7℃~52℃ ~52℃ 1.3 Operating Range of Air Conditioners Temp. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.DESCRIPTION OF PRODUCTS & FEATURES 1.1. Mode Rated Indoor...
... for outdoor unit Air Conditioner 1.2 Brief Introduction for T1、T2、T3 working condition Type of Conditioner Cooling Only Heat pump Air T1 18 ℃~43℃ -7℃~43℃ Electricity Heating ~43℃ Climate type T2 10℃~35℃ -7℃~35℃ ~35℃ T3 21℃~52℃ -7℃~52℃ ~52℃ 1.3 Operating Range of Air Conditioners Temp. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.DESCRIPTION OF PRODUCTS & FEATURES 1.1. Mode Rated Indoor...
Service Manual
Page 5
...pump with reverse check mechanism 1. maintenance panel installation trial running and adjustment hand over 5 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.5 New friendly refrigerant R410A introduction: ■R410A The working pressure of the specified thickness 2. Always use dirty pipe 3. Use piping material of R410A is prohibited seriously 2. Always flow nitrogen during welding work duct work insulation work remote controller installation electric wiring work outdoor unit foundation work 1. Do not connect the power supply outdoor unit...
...pump with reverse check mechanism 1. maintenance panel installation trial running and adjustment hand over 5 Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 1.5 New friendly refrigerant R410A introduction: ■R410A The working pressure of the specified thickness 2. Always use dirty pipe 3. Use piping material of R410A is prohibited seriously 2. Always flow nitrogen during welding work duct work insulation work remote controller installation electric wiring work outdoor unit foundation work 1. Do not connect the power supply outdoor unit...
Service Manual
Page 7
... Power source N, V, Hz Running A / A Start Current A Circuit breaker A Unit model (color) Type × Number Fan Speed(H-M-L) Fan motor output power r/min kW Air-flow(H-M-L) m³/h Indoor unit Type / Diameter mm Heat exchanger Total Area m² Temp. scope ℃ Dimension External Package (L×W×H) mm×mm×mm (L×W×H) mm×mm×mm Drainage pipe (material , I .D./O.D.) mm Control type (Remote /wired) Noise level (H-M-L) dB(A) Weight (Net / Shipping) kg / kg AC122ACERA cooling heating...
... Power source N, V, Hz Running A / A Start Current A Circuit breaker A Unit model (color) Type × Number Fan Speed(H-M-L) Fan motor output power r/min kW Air-flow(H-M-L) m³/h Indoor unit Type / Diameter mm Heat exchanger Total Area m² Temp. scope ℃ Dimension External Package (L×W×H) mm×mm×mm (L×W×H) mm×mm×mm Drainage pipe (material , I .D./O.D.) mm Control type (Remote /wired) Noise level (H-M-L) dB(A) Weight (Net / Shipping) kg / kg AC122ACERA cooling heating...
Service Manual
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... 20/18 wired 35/32/30 14/16 Item Mode AU122AEERA Power cable 3×2.5 Power source N, V, Hz 1, 220-230, 50 Start Current A Unit model (color) Compressor Model / Manufacture Type 3 AU122AEERA(WHITE ) C-6RZ092H1A twin rotary Type × Number axial*1 Fan Speed Fan motor output power r/min kW 840r/min±50 0.06 Outdoor unit Air-flow(H-M-L) m³/h 2500/-/- MAX.Drop MAX.Piping length m m flared 10 20 Norminal condition: indoor temperature (cooling): 27 ℃...
... 20/18 wired 35/32/30 14/16 Item Mode AU122AEERA Power cable 3×2.5 Power source N, V, Hz 1, 220-230, 50 Start Current A Unit model (color) Compressor Model / Manufacture Type 3 AU122AEERA(WHITE ) C-6RZ092H1A twin rotary Type × Number axial*1 Fan Speed Fan motor output power r/min kW 840r/min±50 0.06 Outdoor unit Air-flow(H-M-L) m³/h 2500/-/- MAX.Drop MAX.Piping length m m flared 10 20 Norminal condition: indoor temperature (cooling): 27 ℃...
Service Manual
Page 10
... found (e. g.smell of firing), please cut off After the unit being used for any damages. switch off the power supply immediately, and contact the dealer to the new user. When the unit needs maintenance and repairment, please call dealer to continue using the conditioner will damage the conditioner, and may cause water leak, electrical shock and fire hazard. 1000 The Safety Cautions should be as well...
... found (e. g.smell of firing), please cut off After the unit being used for any damages. switch off the power supply immediately, and contact the dealer to the new user. When the unit needs maintenance and repairment, please call dealer to continue using the conditioner will damage the conditioner, and may cause water leak, electrical shock and fire hazard. 1000 The Safety Cautions should be as well...
Service Manual
Page 11
... pipe use correctly-typed fuse. The falling of refrigerant leakage. May not use wire or any other materials replacing fuse, other-wise may cause accidents. Air-conditioner can't be connected to prevent suffocation accident even in -correct earthing may cause water leaking. 11 When conditioner is permitted to ensure efficient discharge. Otherwise will be responsible for installing the conditioner. It easily cause electrical shock without circuit breaker. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA...
... pipe use correctly-typed fuse. The falling of refrigerant leakage. May not use wire or any other materials replacing fuse, other-wise may cause accidents. Air-conditioner can't be connected to prevent suffocation accident even in -correct earthing may cause water leaking. 11 When conditioner is permitted to ensure efficient discharge. Otherwise will be responsible for installing the conditioner. It easily cause electrical shock without circuit breaker. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA...
Service Manual
Page 14
... surroundings of electric wires from other heat sources. A 1m or more of the unit must NOT be discharged. Wind direction Install the unit so that the air outlet section of overhead space is needed for installation. Installation Instructions 1. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5. Place where drain water may be faced toward wind direction. 14 Place where the air outlet may not disturb the neighborhood. When installing several units, secure sufficient...
... surroundings of electric wires from other heat sources. A 1m or more of the unit must NOT be discharged. Wind direction Install the unit so that the air outlet section of overhead space is needed for installation. Installation Instructions 1. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5. Place where drain water may be faced toward wind direction. 14 Place where the air outlet may not disturb the neighborhood. When installing several units, secure sufficient...
Service Manual
Page 17
... wires. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Electric wiring WARNING! GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS. (1) Selection of size of the wires. Do not connect more than 2% voltage drop.) Item Circuit breaker Model PhaseSwitch breaker Overcurrent (A) protector Power Earth leakage breaker source wire Switch Leak size break curren AU122AEERA 1 40 26 2.5 mm2 40A 30mA (2) Wiring connection Make wiring to supply power to the terminal block. Select wire sizes and circuit...
... wires. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA Electric wiring WARNING! GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS. (1) Selection of size of the wires. Do not connect more than 2% voltage drop.) Item Circuit breaker Model PhaseSwitch breaker Overcurrent (A) protector Power Earth leakage breaker source wire Switch Leak size break curren AU122AEERA 1 40 26 2.5 mm2 40A 30mA (2) Wiring connection Make wiring to supply power to the terminal block. Select wire sizes and circuit...
Service Manual
Page 22
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5.2.2 AC122ACERA INSTALLATION PROCEDURE Install the room air conditioning unit as shown in (Fig.3). (Fig. 3) Arrange the drain hose lower than this direction.) 22 Fig. 7 OK NO NO (Fig. 2) down The drain hose must be connected to system. Ensure that the hole is not fitted to the right side as follows: PREPARING INDOOR UNIT INSTALLATION FIRST REMOVE THE INTAKE GRILL A. INSTALLING DRAIN HOSE The drain hose must be connected to the...
Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 5.2.2 AC122ACERA INSTALLATION PROCEDURE Install the room air conditioning unit as shown in (Fig.3). (Fig. 3) Arrange the drain hose lower than this direction.) 22 Fig. 7 OK NO NO (Fig. 2) down The drain hose must be connected to system. Ensure that the hole is not fitted to the right side as follows: PREPARING INDOOR UNIT INSTALLATION FIRST REMOVE THE INTAKE GRILL A. INSTALLING DRAIN HOSE The drain hose must be connected to the...
Service Manual
Page 23
... piping and drainage exit has been selected, drill 80mm and 50mm or 150mm dia. INSTALLING INDOOR UNIT Reset the hex bolts as shown in both sides. 5. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA CAUTION Install the drain hose at the rear; Holes.(Fig.11) Fig. 11 Fig. 11 12.5mm Insert the anchor bolts into the drilled holes, and drive the pins completely into the drain...
... piping and drainage exit has been selected, drill 80mm and 50mm or 150mm dia. INSTALLING INDOOR UNIT Reset the hex bolts as shown in both sides. 5. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA CAUTION Install the drain hose at the rear; Holes.(Fig.11) Fig. 11 Fig. 11 12.5mm Insert the anchor bolts into the drilled holes, and drive the pins completely into the drain...
Service Manual
Page 24
... the customer in a fire. (3) Always fasten the outside covering of the connection cable with the operating manual: (1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote control unit operations. (2) Air filter removal and cleaning, and how to use a circuit breaker that can trip all the poles of the wiring is chafed, a short curcuit may cause damage to the electrical parts. (2) Connect the connection cables firmly to the terminal block. Incorrect installation...
... the customer in a fire. (3) Always fasten the outside covering of the connection cable with the operating manual: (1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote control unit operations. (2) Air filter removal and cleaning, and how to use a circuit breaker that can trip all the poles of the wiring is chafed, a short curcuit may cause damage to the electrical parts. (2) Connect the connection cables firmly to the terminal block. Incorrect installation...
Service Manual
Page 34
... compressor will stop and alarm. If within 10 minutes, the condition occurs 3 times, the unit will adjust automatically in cooling/dry mode Fan motor locked rotor: When fan motor is requested to work, if fan speed is measured to the target frequency. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 9. running frequency in cooling mode: outdoor ambient temp. ~15 15~38 38~ Max. running frequency in heating mode: outdoor ambient temp. ~10 10~ Min. When compressor starts up...
... compressor will stop and alarm. If within 10 minutes, the condition occurs 3 times, the unit will adjust automatically in cooling/dry mode Fan motor locked rotor: When fan motor is requested to work, if fan speed is measured to the target frequency. Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA 9. running frequency in cooling mode: outdoor ambient temp. ~15 15~38 38~ Max. running frequency in heating mode: outdoor ambient temp. ~10 10~ Min. When compressor starts up...
Service Manual
Page 42
... in Dry mode, fan motor will be on by the synchronous motor, main control board receive usable signal and set fan speed; whenΔT≤ 0, select low speed; in TIMER and SLEEP mode, the TIMER LED will be off , the POWER LED will be OFF.; if it is switched on ; POWER LED flashes when there are controlled by the controller, the POWER LED will change to AUTO LOW; when thermostat is OFF, fan will...
... in Dry mode, fan motor will be on by the synchronous motor, main control board receive usable signal and set fan speed; whenΔT≤ 0, select low speed; in TIMER and SLEEP mode, the TIMER LED will be off , the POWER LED will be OFF.; if it is switched on ; POWER LED flashes when there are controlled by the controller, the POWER LED will change to AUTO LOW; when thermostat is OFF, fan will...
Service Manual
Page 43
... heat pump unit, if the unit is in HEAT mode at FAN mode, if Tr>Ts+3℃, the unit will enter COOL mode. 4.6 When the unit is in COOL mode, when it arrives compressor-stop temperature, the Ts-3℃ heating/blowing compressor will stop ; Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA conditions, then perform the selected mode. Tr≥Ts-3℃ select COOL mode (includes FAN mode) Tr<Ts-3℃ select HEAT or FAN mode 4.2 After entering the AUTO mode, the mode Temp. falling cooling can change into COOL mode...
... heat pump unit, if the unit is in HEAT mode at FAN mode, if Tr>Ts+3℃, the unit will enter COOL mode. 4.6 When the unit is in COOL mode, when it arrives compressor-stop temperature, the Ts-3℃ heating/blowing compressor will stop ; Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA conditions, then perform the selected mode. Tr≥Ts-3℃ select COOL mode (includes FAN mode) Tr<Ts-3℃ select HEAT or FAN mode 4.2 After entering the AUTO mode, the mode Temp. falling cooling can change into COOL mode...
Service Manual
Page 44
... (invalid in Area B, when ΔT>3, change to Area A; Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ΔT>2, the compressor and the outdoor motor will run continuously, indoor motor will run at the set speed, this area is defined as Area A; 0≤ΔT≤2, the compressor and the outdoor motor will always run for 10 minutes and then stop for 6 minutes, indoor motor will be LOW speed, this...
... (invalid in Area B, when ΔT>3, change to Area A; Commercial Air Conditioner Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA ΔT>2, the compressor and the outdoor motor will run continuously, indoor motor will run at the set speed, this area is defined as Area A; 0≤ΔT≤2, the compressor and the outdoor motor will always run for 10 minutes and then stop for 6 minutes, indoor motor will be LOW speed, this...
Service Manual
Page 45
... 12 minutes (use the defrosting start signal from outdoor in the condition of electric heater according to run at low speed; The indoor fan motor will stop ; b) the compressor and outdoor fan running normally. FAN mode control The compressor and the outdoor motor will run at anti-cold air condition. 7.8.5 For the unit with outdoor communication ). 7.8.3 Auto defrost quit condition: The defrosting temp. If the auxiliary electric heating function is working state of with the compressor. 7.8 Defrosting function in heating mode In defrosting...
... 12 minutes (use the defrosting start signal from outdoor in the condition of electric heater according to run at low speed; The indoor fan motor will stop ; b) the compressor and outdoor fan running normally. FAN mode control The compressor and the outdoor motor will run at anti-cold air condition. 7.8.5 For the unit with outdoor communication ). 7.8.3 Auto defrost quit condition: The defrosting temp. If the auxiliary electric heating function is working state of with the compressor. 7.8 Defrosting function in heating mode In defrosting...
Service Manual
Page 46
... the water pump will perform a 1/60 time shorting control. 12.3 High pressure protection After compressor is running for 3 hours, then the unit will stop , and then 3 minutes later, the unit will be set, the sleep time will replace the original time of cooling mode, heating mode and fan mode (including auto fan mode), after setting TIMER ON function, the sleep function only can be set. 6) If sleep function is set befroe the TIMER ON time...
... the water pump will perform a 1/60 time shorting control. 12.3 High pressure protection After compressor is running for 3 hours, then the unit will stop , and then 3 minutes later, the unit will be set, the sleep time will replace the original time of cooling mode, heating mode and fan mode (including auto fan mode), after setting TIMER ON function, the sleep function only can be set. 6) If sleep function is set befroe the TIMER ON time...
Service Manual
Page 49
... W FAN M MOTOR Y/G MOTOR CAPACITOR POWER SUPPLY TO OUTDOOR UNIT RECEIVE BOARD FLOAT SWITCH REMOTE CENTRALIZED CONTROLLER NOTE: 1.THE PARTS IN DASHED FRAME ARE OPTIONAL 2.REFER TO OPERATION MANUAL TO SET BM3 AND BM4 3.USER SHOULD NOT TO SET BM1 AND BM2 W:WHITE B:BLACK BR:BROWN BL:BLUE R:RED Y:YELLOW Y/G:YELLOW/GREEN TEMP.:TEMPERATURE AC122ACERA AD122ALERA CIRCUIT DIAGRAM OF INDOOR UNIT 0010576546 TRANS. PARTS 1 2 3 ARE NOT AVAILABLE 2. PARTS 4 5 6 ARE 7 OR OR Y Y 9 12 11 M M M FAN Y/G MOTOR M M ROOM PIPING TEMP. PART 7 NOT AVAILABLE IN DUCT TYPE 4.
... W FAN M MOTOR Y/G MOTOR CAPACITOR POWER SUPPLY TO OUTDOOR UNIT RECEIVE BOARD FLOAT SWITCH REMOTE CENTRALIZED CONTROLLER NOTE: 1.THE PARTS IN DASHED FRAME ARE OPTIONAL 2.REFER TO OPERATION MANUAL TO SET BM3 AND BM4 3.USER SHOULD NOT TO SET BM1 AND BM2 W:WHITE B:BLACK BR:BROWN BL:BLUE R:RED Y:YELLOW Y/G:YELLOW/GREEN TEMP.:TEMPERATURE AC122ACERA AD122ALERA CIRCUIT DIAGRAM OF INDOOR UNIT 0010576546 TRANS. PARTS 1 2 3 ARE NOT AVAILABLE 2. PARTS 4 5 6 ARE 7 OR OR Y Y 9 12 11 M M M FAN Y/G MOTOR M M ROOM PIPING TEMP. PART 7 NOT AVAILABLE IN DUCT TYPE 4.
Operation Manual
Page 21
... necessary. (when ceiling already exists.) Refer to indoor unit, before installation. For new ceiling, use built-in type bolt or parts prepared in field. 50~100 19 Downloaded from AC-Manual.com Manuals Connect all pipings (refrigerant, water drainage), wirings (inter unit cable) to paper pattern for dimension of already exists ceiling. Cut a hole in ceiling, may be a frame should be used to ensure a smooth surface and to prevent vibration...
... necessary. (when ceiling already exists.) Refer to indoor unit, before installation. For new ceiling, use built-in type bolt or parts prepared in field. 50~100 19 Downloaded from AC-Manual.com Manuals Connect all pipings (refrigerant, water drainage), wirings (inter unit cable) to paper pattern for dimension of already exists ceiling. Cut a hole in ceiling, may be a frame should be used to ensure a smooth surface and to prevent vibration...
Operation Manual
Page 26
... up for specifications of the different specifications. Don't connect wires of wires, circuit breaker, switches and wiring etc. Accessory Pad Pad 1. Use copper wire only. See Installation Manual of outdoor unit for about 45 degree and remove it , or water may occur). Connecting of unit Remove cover of different specifications to Fig. 3) 24 Downloaded from ornament panel * 1 Push in . Note: All electric wires have their own poles, poles must be installed, which can cut power supply...
... up for specifications of the different specifications. Don't connect wires of wires, circuit breaker, switches and wiring etc. Accessory Pad Pad 1. Use copper wire only. See Installation Manual of outdoor unit for about 45 degree and remove it , or water may occur). Connecting of unit Remove cover of different specifications to Fig. 3) 24 Downloaded from ornament panel * 1 Push in . Note: All electric wires have their own poles, poles must be installed, which can cut power supply...