Haier Yl H24 Manual
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\b \b \f \b\b\f -34 - 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Failure diagnosis Upon abnormal operation: Please read the Users Manualattached with the indoor unit before asking for repairing. You may contact the after-sal es technicians after careful checkup. When faults arise, the symbol appears along with the error code. The central controller faults corresponding to error codes are given in the following list (including air conditioner faults and group control network faults): CodeMeaning None (normal operation) Fault with indoor ambien t temperature sensor Fault with indoor tube temperature sensor Indoor heating ov erload protection Indoor cooling icing (overload) protection Indoor & outdoor communication error Communication fault between panel (wir e controller) and indoor unit (air conditioner indication, central controller shows 30) Module fault (PFC protection DC) No load Compressor overheating Abnormal CT current Fault with outdoor ambient temperature sensor Fault with outdoor heat exchang er (tube temperature) sensor Protection of supply over voltage or undervoltage High voltage protection --- Fault with outdoo r evaporator sensor --- Cooling overload EEPROM fault Fault with outdoor return gas sensor Fault with compressor sensor --- Fault with indoor evaporator sensor Drain system failure Power supply 3-phase fault (phase lack or mistake) Humidity sensor malfunction Indoor fan failure (fan overcurer nt, fan IPM protection, fan Holtz element fault) Blank Low voltage protection --- Electronic expansion valve failure --- Dust remover screen needs cleaning Insufficient refrigerant Abnormal communication between monitor and air conditioner Abnormal communication b etween monitor and bus Outdoor fan failure (fan overcure rnt, fan IPM protection, fan Holtz element fault)
Commercial Air Conditioner Function description: 1.9 Central Controller ICR01 0010451974A ICR01 central controller is developed from YCZ-A001, the operation and dimension is same with YCZ-A001, please refer YCZ-A001 part, ICR01 is used for X Multi, MRVII(R22, R410A) series, YCZ- A001 is used for Unitary Free, Unitary smart and Free Multi seires. But the wiring installation is completely different. 1.9.1 Appearance Figure 1 To t a l o n / To t a l o f f 1 17 33 49 2 18 34 50 3 19 35 51 4 20 36 52 5 21 37 53 6 22 38 54 7 23 39 55 8 24 40 56 9 25 41 57 10 26 42 58 11 27 43 5912 28 44 60 13 29 45 6114 30 46 62 15 31 47 6316 32 48 64 MONITOR SET MODE FAN COOL DRY HEAT AUTO 1 2 GROUP TOTAL UNITRUN STOPCENTRAL LOCK SLAVE TIMER STANDBY FILTER FAN SPEED AUTO HIGH MID LOWSET FAILU RE C HEC K RECOVERY SWINGAUTO NORMAL HRV TEMP. MONITOR SETTOTAL GROUPMODE FAN SPEED TIMERRECOVERYCHECK FILTER CONFIRM GROUP SETCENTRAL LOCKSELECT 1.9.2 LCD icons introduction LCD of central controller displays indoor stat e and setting mode of different units. 1 17 33 49 2 18 34 50 3 19 35 51 4 20 36 52 5 21 37 53 6 22 38 54 7 23 39 55 8 24 40 56 9 25 41 57 10 26 42 5811 27 43 5912 28 44 6013 29 45 6114 30 46 62 15 31 47 6316 32 48 64 MONITOR SET MODE FA N COOL DRY HEAT AUTO 1 2 GROUP TOTAL UNITRUN STOPCENTRAL LOCK SLAVE TIMER STANDBY FILTER FA N SPEED AUTO HIGH MID LOWSET FAILURE CHECK RECOVERY SWINGAUTO NORMAL HRV central controller state indication temp. setting and failure indication indoor group and unit number indication indoor state indication indoor unit number indication Figure 2: LCD diagram of central controller - 35 - Important! Timer and Recovery buttons are not in use.
Commercial Air Conditioner 1.9.3. Installation drawing LN (1PH, 220V AC power source) 0010451974A ICR01 Central controller Figure 3. back of central controller 1.9.5. Communication wire specs The wire between connecting board to the central contro ller is the dual-core STP (shielded twisted pair). The detailed specs are as below: wire length(m)
Commercial Air Conditioner 00: 1~64 01: 65~128 10: 129~192 11: 193~256 position1 0: ON 1: OFF indoor bus line central bus line 2 master controller slave controller34 For example: Select central bus line, master central controller, co ntrol range is 00, so the dip switch is 1 0 0 0 (default) Select indoor bus line, master central controller, control range is 00, so the dip switch is 0 0 0 0. 1.9.7. Can set the central control unit as a group, and the max. 64 units of indoor can be set a group. After setting unit, the indoor in one group can be controlled the same operation (when out of factory, one unit is regarded as one group). central controller connecting board IGU04 Indoor 1 Indoor 2Indoor 3 Indoor 1 Indoor 2 Indoor 3 Figure 5 Central unit and group diagram YR-E12YR-E12YR-E12 Unit 1 Unit 2 Unit 3 1.9.8. Control function 1. Features and functions of central controller Central controller control(ICR01) diagram is as below: Figure 6 MRV II central control system diagram connecting board ... IGU04 outdoor central controllerICR01 connecting board5 IGU04 connecting board 1 IGU04 outdoor outdoor unit 1 unit 2 wired controller wired controller wired controller max. 16 indoors unit 64 (max. 64 units) unit 3 Infrared controller YR-E12 YR-E12 YR-H71 YR-H71 B-A B-BP, Q P, Q P, Q 1.9.9.Summarization For installation, connect communication wires from central controller ICR01 port B-A,B-A, to connecting board IGU04. and then connect communication wires from IGU04 P,Q to outdoor or indoor unit communication port P,Q. Notice, the default position of ICR01 dip switch is1000,theaddressofIGU04andtheindooraddressmustbesetindifferentnumber. When one central controller control one air con dition system, also can directly connect wires from ICR01 B-A,B-B port to P, Q port of outdoor or indoor communication port. - 37 -
\b \b \f \b\b\f -38 - Press[check] button, ICR01 will show the diagnostic code, when unit * is in error, and choose the \ number in ICR01, you will see the diagnostic code, and if not select the error units, the error u nitsnumber will be flashing. Diagnostic code for outdoor master unit 20Outdoor defrost temp. sensor TE error 21Outdoor ambient temp. Sensor TA error 22Outdoor suction temp. sensor TS error 24Outdoor oil temp. sensor Toil errorThe temp. tested from sensor is keeping lower than - 60.87or higher than 135.4for 60 seconds, and system will automatically change to backup running mode. 23Outdoor discharge temp. Sensor TD error The temp. tested from sensor is keeping lower than -4.45 or higher than337.14for 60 seconds, and system will automatically change to backup running mode. 25Master compressor current is over highSignal comes from MCU 840 26Communication error between indoor and outdoor unit Outdoor didn¯t fi nd anyi ndoor un i 27Compressor oil temp. is over-highOil temp. is keep higher than 90 for 5 minutes, when the temp. is lower than 75, the alarm will be disappeared automatically. 28Master unit high pressure sensor error 29Master unit low pressure sensor error The signal voltage is higher than 4.9V, or lower than 0.1V for 30 seconds 30High pressure switch alarms for over-high pressure 31Low pressure switch alarms for over-high pressure or over-low pressureThe switch keep open for 1 minute, alarm, if switch keep short-connecting for over 1 minute, the alarm will be gone automatically 32Inverter IPM problemSignal comes from MCU 840 33Master unit PCBMB89F538EEPROM error EEPROM data is lost or is installed in wrong way. 34Outdoor compressor discharge temp. sensor alarms Discharge temp. sensorTD1temperature is higher than 1 25 for 10 secondswhen lower than 100, resume 35Theprotectionpartininverter compressor is acted Check the part in compressor. 37Masterunithigh/lowpressure sensor is installed in wrong turn In the first 3 minutes of compressor running, Pd/Ps40 for over 10 minutes 42Current over-highSignal is higher than setting Max. current for 5 seconds
\b \b \f \b\b\f -39 - 43Master discharge temp. sensor alarm in low frequence When inverter compressor frequence is lower than30Hz, TD1 is higher than 110 44Communicationerror between master unitMB89F538 and MCU 807(indoor) No signal for over 4 minutes 45Communication error between master unitMB89F538and MCU807(indoor) MB89F538 and 807central controller No signal from indoor unit or central controller for over 4 seconds 46Communication error between master unit connecting board and inverter PCB No signal for over 2 minutes 49Master inverter drive PCB EEPROM error EEPROM data is lost or installed in wrong way. 50The total capacity of indoor units is too high Total capacity of indoor units>outdoor capacity x 135% 51Outdoor communication signal is lost 52Indoor units is over than 64 sets 53Central control address repeatCheck the address of all indoor units 54Master unit oil temp. is over-lowIn running, the temp. of compressor oil is lower than ( ps+10 for 5 minutes 69Slave unit is lostCommunication of slave unit error or switched off 70Shortage of refrigerationOnly show diagnostic code, doesn t stop units
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