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Repair the product or products dealt with in this service information by anyone else could result in serious injury or death 2016 (Qingdao Haier Air Conditioner General corp. , Ltd) All rights reserved. Unauthorized copying and distribution is a violation of law Haier Group Version:V1 Date:2016-10-30...
Introduction 1 Introduction 1.1 Model name explanation Apply toT1; 220~240V50Hz/1Ph DC inverter Heat pump & R410A refrigerant Version number Australia Platform of outdoor units: Q (Q platform) Nominal cooling capacity (3500W) Type of outdoor unit : U (normal type) The maximum combination number Domestic air conditioner...
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Introduction 1.2 Safety Cautions Be sure to read the following safety cautions before conducting repair work.
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Introduction Warning Do not repair the electrical components with wet hands .
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Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when...
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Introduction Do not install the equipment in a place where there is a possibility of combustible gas leaks.
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Introduction Check the grounding, and repair it if the equipment is not properly grounded.
Specification TECHNICAL SPECIFICATIONS-OTHERS Refrigerant type R410a Refrigerant charge Refrigerant Maximum allowable distance circuit between indoor an outdoor Maximum allowable level difference Refrigerant control liquid Φ6.35 Piping connections Φ 9.52 (external diameter) drain Φ16 Heat insulation type Both liquid and Gas pipes Max.
Wiring diagrams 6. Printed Circuit Board Connector Wiring Diagram Connectors PCB (1) (Outdoor Control PCB) 1) CN1, CN2 Connector for power N and L 2) CN3 Connector for ground 3) CN23 Connector for DC POWER 15Vand 5V to the module board 4) CN9, CN10 Connector for CN2,CN1 on the module board 5) CN22 Connector for fan motor 6) CN11 Connector for four way valve coil...
Functions and control 7. Functions and Control 7.1 Main functions and control specification 7.1.1 The operation frequency of outdoor unit and its control 7.1.1.1 The operation frequency control of compressor The operation frequency scope of compressor: Mode Minimun operation frequency Maximun operation frequency 7.1.1.2 The starting of compressor When the compressor is started for the first time, it must be kept under the conditions of 58Hz,88Hz for...
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Functions and control < ≥ Max_hz3 90 HZ Wh_c < ≥ Max_hz5 60 HZ Wh_c Remarks: the above are not only the maximum frequency limitations of the complete appliance which are affected by the environment, but also the maximum ability limitation of the system. When the starting ability is not the maximum, its maximum frequency limitation is calculated by the following equations: The frequency limitation which is affected by the temperature and under the condition of actual ability=the actural running system ability*the maximum frequency which is limited by the temperature and under the...
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Functions and control During the compressor is started for 3 seconds, the outdoor fan is controlled the airflow speed according to the temperature conditions of the outdoor environment. Tao(℃) Tao <22℃ 22℃5< Tao <29℃5 Tao≥29℃5 Tao(℃) Tao <10℃ 10℃< Tao <16℃ Tao≥16℃...
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Functions and control 7.1.5 :Protection function 7.1.5.1:TTC high temperature-preventing protection Once the machine is started, it can run TTC overheating protection of air-blowing, but air-blowing sensor malfunction must alarm after 4 minutes during which the compressor is started (during the course of self-detection, there’s no such limitation) Sensor detection methods: 100 times (one cycle of procedure run is one time, and about 5ms, detection method for each time: continuously sampling for 8 times, then order them and take the mean value of the...
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Functions and control Remarks: the outdoor unit 7.1.5.3:The control of preventing the overcurrent of the compressor: ●During the starting process of the compressor, if the current of the compressor is greater than 15A for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3 times in 20 minutes, stop the compressor and alarm, and confirm the malfunction.
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Functions and control When Tpg_indoor begins to rise again, and ice_temp_2≤Tpg_indoor≤ ice_temp_3℃, the frequency of thecompressor doesn’t change. When ice_temp_3〈Tpg_indoor〈ice_temp_4℃, the frequency of the compressor increases at the speed of 1HZ/10seconds. For example, Tpg_indoor≤0℃,last for 2 minutes, and then the outdoor unit will stop, and report underload malfunction, but don’t send malfunction report to the indoor.
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Functions and control Frost-removing temperature sensor failure Ambient temperature sensor failure Exhaust temperature sensor failure Communication fault between indoor and outdoor units deviate from the normal for the compressor ---- Loop of the station detect error High work-intense protection Overcurrent of the compressor Overcurrent protection for single-phase of the compressor ---- The socket protect...
Connector Wiring Diagram 10.Service Diagnosis 10.1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected. 1.When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation. 2.When a signal transmission error occurs between the indoor and outdoor units.In either case, conduct the diagnostic procedure described in the following pages.
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Connector Wiring Diagram Indoor and Communication fault between indoor ■ ■ ★ Outdoor and outdoor units Room temperature sensor failure ★ ■ ■ Indoor Heat-exchange sensor failure ★ □ □ Malfunction Indoor EEPROM error ★ □ ★ Indoor fan motor malfunction ■...
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Seivice diagnosis Check the connector connection. Correct the connection Is it normal? Thermistor resistance check Replace the thermistor Is it normal? Replace the indoor unit PCB Thermistor resistance check method: Remove the connector of the thermistor on the PCB, and measure the resistance of thermistor using tester. The relationship between normal temperature and resistance is shown in the value of indoor thermistor.
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Seivice diagnosis 10.3.4 Outdoor DC fan motor fault Outdoor display LED1 flash 9 times Method of DC fan motor is detected by checking the fan running condition and so on Malfunction Detection Malfunction Conditions Supposed ■ DC fan motor protection dues to the DC fan motor faulty Causes ■...
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Seivice diagnosis 10.3.5 IPM protection Outdoor display LED1 flash 2 times Method of IPM protection is detected by checking the compressor running condition and so on Malfunction Detection Malfunction ■ The system leads to IPM protection due to over current Decision ■...
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Seivice diagnosis 10.3.6 Over-current of the compressor Outdoor Display LED1 flash 3 or 24 or 25 times Method of The current of the compressor is too high Malfunction Detection Malfunction when the IPM Module is damaged Decision or the compressor is damaged. Conditions power supply voltage is too low or too high Supposed...
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Seivice diagnosis 10.3.7 The communication fault between IPM and outdoor PCB Outdoor display: LED1 flash 4 times Method of Communication is detected by checking the IPM module and the outdoor PCB Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...
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Seivice diagnosis 10.3.8 Power Supply Over or under voltage fault Outdoor display: LED1 flash 6 times The power supply is over voltage Method of An abnormal voltage rise or fall is detected by checking the specified voltage detection circuit. Malfunction Detection Malfunction An voltage signal is fed from the voltage detection circuit to the microcomputer...
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Seivice diagnosis 10.3.9 Overheat Protection For Discharge Temperature Outdoor display: LED1 flash 8 times Method of The Discharge temperature control is checked with the temperature being detected Malfunction by the Discharge pipe thermistor Detection Malfunction when the compressor discharge temperature is above 110℃ Decision Conditions Supposed...
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Seivice diagnosis 10.3.10 The communication fault between indoor and outdoor Indoor display Outdoor display LED1 flash 15 times Method of Communication is detected by checking the indoor PCB and the outdoor PCB Malfunction Detection Malfunction ■ The outdoor PCB broken leads to communication fault Decision ■...
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Seivice diagnosis 10.3.11 Loss of synchronism detection Inverter side current detection is abnormal Outdoor Display LED1 flash 18 times LED1 flash 19 times Method of The position of the compressor rotor can not detected normally Malfunction Detection Malfunction when the wiring of compressor is wrong or the connection is poor; Decision or the compressor is damaged Conditions...
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Seivice diagnosis 10.3.12 High work-intense protection Outdoor display LED1 flash 21 times Method of High work-intense control is activated in the heating mode if the temperature Malfunction being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger Decision rises above 63℃...
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Circuit diagrams Sincere Forever Haier Group Edited by : Zou Na Haier Industrial Park, No.1, Haier Road 266101, Qingdao, China_ Signed by : Zhang junyan Http://www.haier.com He shiquan Approved by: Domestic air conditioner...