1. General Information 1.1 Safety • This manual should always be accessible and close to this air condition equipment. • There are two types of indications, " WARNING" and " CAUTION". The indication preventing from death or heavy injury is listed as " WARNING".
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CAUTION • Grounding wire should be connected with the grounding bar. The grounding wire can not be connected to the gas pipe, water pipe, lightening rod or the telephone grounding wire. Improper grounding may cause electric shock. • Units installed on roof should have appropriate access and handrail. •...
1.2 Feature 1.2.1 User friendly outdoor structure Compact inner structure and core parts. 1.2.2 Double EEVs control The double EEVs control the 2 stages heat exchanger separately, which can adjust the condenser volume and optimize system performance. 1.2.3 Energy Saving: Heat recovery between different refrigerant system Heat recovery is achieved within the water loop among different refrigerant systems, higher whole system efficiency due to cooling and heating simultaneously in different refrigerant systems.
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1.2.5 Water pump controlled together with the outdoor The reserved water pump linkage control realizes the pump linkage control, reduces the energy consumption and eliminates hidden risks. 1.2.6 High reliability Temperature range of water inlet 45℃ ℃ Wide operation range 7~45℃...
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1.2.8 Allowable pipe length and height difference When the distance between outdoors is over 2m, the oil trap must be set (upright projecting pipe, 200mm high), as the figure: Should Should be less Outdoor 1 be less than 2m than 2m Over Over 200mm...
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1.2.9 Easier maintenance a. Backup operation If one outdoor unit malfunction happens, the other units provide emergent operation until repair achieved. In one model system, also can realize back up operation when fix speed compressor error happens. b. Auto check function. Failure codes displayed by LED in outdoor PCB or controllers are so detailed for us to find the fail place more quickly, and can judge the failure content easily.
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Operation Range of Air Conditioner Condition Cooling Heating Outdoor Environment temperature 0-40°C Outdoor Environment humidity <80% Indoor Temperature 17-32°C 15-30°C Water Inlet Temperature 7-45°C 8HP: 2.4-7.2m Water Flow Rate Range 10HP: 3.0-9.0m 12HP: 3.6-10.8m 8HP: 35kPa Water Pressure Drop 10HP: 40kPa 12HP: 45kPa Max Water Pressure 1.96MPa...
3. Dimension 3.1. Single unit 8~12HP exterior and installation dimensions Ø13 through-hole Foundation Ø13 through-hole Foundation Over 100 Over 300 Ø10 Expansion bolt Concrete Rubber cushion foundation Solid ground or roof...
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3.2 Combination unit A. Sites for one outdoor unit Over Over 100mm 300mm Front Over 1175mm B. Sites for two outdoor unit Over 300mm Over 1850mm...
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Over Over Over 300mm 300mm 100mm Front Over 2250mm C. Sites for three outdoor units Over Over 300mm 300mm Over 2925mm...
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Front Over Over Over Over 100mm 300mm 300mm 300mm Over 3325mm 3.3. Combination installation dimensions When there are walls around the outdoor units: A. Sites for one-row layout Front Over Over Over 100mm 300mm 300mm...
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B. Sites for two-row layout Front Front Over Over Over 100mm 300mm 300mm C. Sites for three-row layout Front Front Front Front Over Over Over 100mm 300mm 300mm...
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Part name Sign Function Data Remark Capacity control, meet indoor load request by adjusting the frequen- Compressor ANB66 0.23Ω Pressure Switch High pressure protection control 4.15Mpa, OFF In heating, compressor frequency adjustment, abnormal pressure NSK-BD042I-224 protection. Pressure Sensor In cooling, compressor frequency adjustment abnormal pressure NSK-BD017I-224 protection.
9. Capacity calculation due to capacity modification coefficient 9.1 Unit selection (Based on Cooling Load) 9.1.1 Actual Performance Data Determine correct table according to the outdoor unit model and combination ratio. Enter the table at given indoor and outdoor temperature and find the outdoor unit capacity and power input. The individual indoor unit capacity (power input) can by calculated as follows.
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E. Capacity compensation value at different piping length and drop AV08IMWEWA AV10IMWEWA 1.00 1.00 liquid pipe : Φ 9.52 liquid pipe : Φ12.7 gas pipe : Φ gas pipe : Φ25.4 0.95 0.95 0.90 0.90 liquid pipe : Φ9.52 liquid pipe : φ 9.52 gas pipe : Φ19.05 gas pipe :...
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AV26IMWEWA AV28IMWEWA 1.00 1.00 liquid pipe : Φ 19.05 liquid pipe : Φ 19.05 gas pipe : Φ gas pipe : Φ 0.95 0.95 0.90 0.90 liquid pipe :φ19.05 liquid pipe :φ19.05 0.85 0.85 gas pipe :φ31.8 gas pipe :φ31.8 0.80 0.80 pipe length of single way ( m ) pipe length of single way (...
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(2) Calculation method of heating capacity---Heating capacity to be known Heating Capacity Modification = Heating capacityx (A x B x C x D x E ) W B. Capacity modification value under Inlet water A. Capacity modification value under indoor air dry-bulb temperature condition temperature condition Indoor air dry-bulb...
12. Installation Installation & Startup Quick Guides 1. Installation Procedure 1.1 Drafting of diagram, select the installing place including the wiring and piping 1.2 Pre-installation, including pipe protective sleeves, hooks, supports, etc. 1.3 Indoor installation 1.3.1 Indoor DIP switch settings 1.3.2 Indoor unit installation 1.3.3 Refrigerant piping installation 1.3.4 Drain piping installation...
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For installation, please review the items below: • Are the connected units quantity and the total capacity in the allowable range? • Is the refrigerant pipe length in the limited range? • Is the pipe size proper? And if the pipe is installed horizontally? •...
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(3) Installation place selection Air-conditioner can't be The unit should be installed at the The unit should be installed at the strong installed in the place with place with good ventilation. No enough place. Or it will cause vibration inflammable gas. Or it will obstacle at the air inlet/outlet.
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Product introduction • Water Cooled VRF is a water-air heat pump air condition equipment which can deliver cooling and heating by taking water as its heat source. Water acts as the heat-extraction source when heating, while heat-absorption source when cooling. Thus there is no risk of frost formation on condenser’s surface. •...
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Operation chart a. Cooling circulation Expansion tank Closed-type cooling tower Circulating pump Water inlet 30°C The outdoor units Water outlet 35°C b. Heating circulation Expansion tank Boiler Circulating pump Water inlet 20°C The outdoor units Water outlet 15°C...
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Water system Cooling water system guarantees Water Cooled VRF reliable operation. Water volume and water temperature should reach the design index (see the technical parameter) during the designing of VRF water system in order to not cause cooling volume dropping or tripping protection because of inadequate water or lack water or water temperature too high.
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③ Water treatment and control When the Circulating cooling water runs for a long time, it will produce algae, and salinity will rise, resulting in heat exchanger fouling, which will affect the heat transfer efficiency. It is better to process timely. Electronic water treatment meters should be included for scale resistance protection and water quality stabilization.
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④ Cooling water pipe system 1. Inlet of water 2. Outlet of water 3. Y-shape filter 4. Gate valve 5. Connection port to draining piping 6. Drain valve 7. Air purge 8. Water piping socket 9. Refrigerant gas side 10. Refrigerant liquid side 11.
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2. Insulation should be installed on the water inlet/outlet to prevent condensate water or icing; 3. Water in heat exchanger should all be drained out during long shutdown in the winter to avoid icing; 4. The diameter of water pipe should be the same as the diameter of unit connection (1-1/4 inch) or larger. 5.
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⑤ Auxiliary Thermal Source: In winter, circulating water temperature is maintained from 15 to 25°C. When in heating mode, the water temperature will drop down gradually, so there should have auxiliary heating source to maintain the water temperature in rating range. There are many types of auxiliary heating source, such as boiler, wasted heating source from factory, or civilian steam system.
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1. 8~12HP exterior and installation dimensions Ø13 through-hole Foundation Ø13 through-hole Foundation Over 300 Over 300 Ø10 Expansion bolt Concrete Rubber cushion foundation Solid ground or roof...
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A. Sites for one outdoor unit Over Over 300mm 300mm Front Over 1375mm B. Sites for two outdoor units Over 300mm Over 1850mm...
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Over Over Over 300mm 300mm 300mm Front Over 2450mm C. Sites for three outdoor units Over Over 300mm 300mm Over 2925mm...
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Over Over Over Front Over 300mm 300mm 300mm 300mm Over 3525mm 2. Combination installation dimensions When there are walls around the outdoor units: A. Sites for one-row layout Front Over Over Over 300mm 300mm 300mm...
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B. Sites for two-row layout Front Front Over Over Over 300mm 300mm 300mm C. Sites for three-row layout Front Front Over Over Over 300mm 300mm 300mm Front Over Over Over 300mm 300mm 300mm...
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A. Refrigerant pipe connection When fastening and loosing the Pipe connection method nut, operate with double spanners, because only one spanner cannot • To ensure the efficiency, the pipe should be as short as possible. execute firmly. • Daub the refrigerant oil on the connector and the flared nut. •...
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Antifouling measures First, clean the pipe. Position Installation period Measures More than 1 month Flat the pipe end Outdoor Less than 1 month Flat the pipe end or seal with adhesive tape Indoor Nothing to do with period Pipe specification: Outdoor branch pipe Manifold pipe 1.
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2. Pipe “b” diameter (between manifold pipes) Total indoor capacity after the manifold pipe (kW) Gas pipe (mm) Liquid pipe (mm) <16.8kW 15.88 9.52 16.8KW≤X<22.4kW 19.05 9.52 22.4KW≤X<33.0kW 22.22 9.52 12.7 33.0KW≤X<47.0kW 28.58 28.58 15.88 47.0KW≤X<71.0kW 31.8 19.05 71.0KW≤X<101.0kW ≥101.0kW 38.1 19.05 Note: Adjust the diameter on job site (changing pipe is needed)
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4. Pipe “d” diameter (between outdoor branch pipe) Gas pipe(b,d) (mm) Total outdoor capacity before the branch pipe Liquid pipe(a,c) (mm) ~68.0kW Ø15.88 Ø28.58 69.0~90.0kW Ø19.05 Ø31.8 5. Pipe “e” diameter (between outdoor and the outdoor branch pipe) Outdoor capacity Gas pipe (mm) Liquid pipe (mm) Oil equalization pipe (mm)
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2. Pipe length between outdoors Outdoor 1 2nd outdoor branch pipe 1st outdoor branch pipe Outdoor 2 Outdoor 3 Gas/liquid pipe: L1+L3 <10m, L2+L3<10m Oil equalization pipe: L5+L6<10m Height difference between outdoors: h<5m Note: a. HZG-30A includes HZG-20A; b. The connection pipe among outdoors can't be higher than the outdoor unit check valve to avoid over oil return to compressor;...
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d. For installations with outdoors at different heights, please follow either of the layouts below: Oil trap (upright projecting pipe, 200mm high) Outdoor 1 Outdoor 2 Outdoor 3 Oil trap (upright projecting pipe, 200mm high) Outdoor 2 Outdoor 3 Outdoor 1 e.
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2) Installation below is not allowed (compressor oil will flow into the lowest outdoor). Outdoor 1 Outdoor 2 Outdoor 3 3. Allowable piping length and height difference between indoor and outdoor When the distance between outdoors is over 2m, the oil trap must be set (upright projecting pipe, 200mm high), as the figure: Should Should...
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Max. length Pipe in above figure L1+L2+ L3+ L4+ L5+ L6+ L7+L8+ L9+ L10+ Single way total pipe length L11+ L12+ L13+ L14+ L15 Single way max. pipe equivalent length L1+ L3+ L5+ L7+ L14+ L13 Max. pipe length after 1st branch pipe L7+L13+L14 Main pipe equivalent length Height difference between indoors...
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Model Diameter Connecting Diameter Connecting Diameter Connecting (mm) method (mm) method (mm) method AV08IMWEWA Ø19.05 Ø9.52 Ø9.52 AV10IMWEWA Ø22.22 Braze Ø9.52 Flared Ø9.52 Flared AV12IMWEWA Ø25.4 Ø12.7 Ø9.52 B. Indoor unit Gas pipe Liquid pipe Model Capacity Connecting method Connecting method...
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Manifold pipe Manifold pipe selection: Total indoor capacity(100W) Model(optional) Less than 335 FQG-B335A More than 335, less than 506 FQG-B506A More than 506, less than 730 FQG-B730A More than 730 FQG-B1350A Outdoor unit type The closest outdoor unit to the 1st manifold pipe will be the master unit. Note: 1.
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• When doing the flare connection, please do the following: When connecting the expanding pipes, fasten the pipes with double spanners. The torque refers to the former info. Expanding pipe:A(mm) Projecting length of pipe to be expanded:B(mm) Pipe outer When it is hard pipe Pipe outer diameter diameter...
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B. Leakage test 1. The outdoor unit has been executed the leakage test in the factory. The pipe should be executed leakage test individually and forbidden to test after connecting with check valve. 2. Refer to the below figure to charge the nitrogen into the unit to take a test. Never use the chlorine, oxygen and flammable gas in the leakage test.
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Because the unit is charged with refrigerant R-410A, the below issues should be paid attention: • To prevent the different oil going into the pipe, please use the special tool for R-410A, especially for gauge manifold and charging hose. • To prevent the compressor oil going into the refrigerant cycle, please use the anti-backflow adapter. •...
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Additional refrigerant amount outdoor unit in outdoor unit diameter site during on site for (kg) factory on site installation maintenance (mm) AV08IMWEWA Ø6.35 0.022kg/m×__m=__kg AV10IMWEWA Ø9.52 0.054kg/m×__m=__kg AV12IMWEWA Ø12.7 0.11kg/m×__m=__kg W2+W3= W1+W2+ Ø15.88 0.17kg/m×__m=__kg ___kg W3=___kg Ø19.05 0.25kg/m×__m=__kg Ø22.22 0.35kg/m×__m=__kg...
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Communication wiring figure Outdoor 1 Outdoor 2 Outdoor 3 Control wire for wired controller with polarity Communication wire with polarity Indoor 1 Indoor 2 Indoor 3 Indoor 4 Indoor 5 Wired controller Indoor 6 Indoor 7 Indoor 8 Indoor 9 Indoor 10 Wired Wired...
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Ground fault interrupter (mA) Screw response time (S) Model AV08IMWEWA 40A 30mA below 0.1S 3N~, 380- AV10IMWEWA 40A 30mA below 0.1S 400V, 50/60 Hz AV12IMWEWA 50A 30mA below 0.1S Power cable must be fixed firmly. Each outdoor must be earthed well.
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Requirements for pulse ammeter 1. Three-phase four-line active pulse ammeter A. The ammeter shall be suitable for metering three-phase AC active electric energy at a rated frequency of 50 Hz. B. The number of pulses outputted by the ammeter for one kWh of electricity shall be constant. C.
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Indoor power source and communication wiring Rated Rated current of residual Communication wire section Item Power Wire current of circuit breaker (A) cable Indoor length overcurrent Ground fault interrupter section Outdoor/indoor Indoor/indoor total breaker (mA) current (A) response time (S) <10 20A, 30mA, below 0.1s 30A, 30mA, below 0.1s...
16. Outdoor PCB dip switch setting Selection switch and the display ldentification: • Master unit: by setting DIP switch, the unit number is 0. It is used to communicate with indoor unit, and it is the organizer of outdoor communications as communication master unit. •...
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Note: Oil temperature too low protection See BM1-3 (BM1 introduction table). 2)BM2 instruction System functions normally without quiet function Quiet running BM2-1 function Quiet running functions System functions normally without anti-snow function BM2-2 Anti-snow function Anti-snow functions BM2-3 No definition Default is 0.
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4)BM4 instruction Without drop among indoors Drop selection among Group class (valid for BM4-1 indoors physical host) With drop among indoors Stopped Fan motor operation setting BM4-2 of stopped slave units when Single class the master unit is heating Operating Max.
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1) Indoor parameter Check the parameters of indoor whose address is from 1 to 64. SW11 is set from 3~15 to check indoor parameter. SW9 and SW10 show indoor unit number. SW10 System address 1- 16 units (indoor PCB address DIP switch 0#-15#) 17- 32 units (indoor PCB address DIP switch 16#-31#) 0-15 33- 48 units (indoor PCB address DIP switch 32#-47#)
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2) Outdoor unit parameters observation SW9 is used to select outdoor unit number, SW10 and SW11 working together to show outdoor parameter. For example, SW9 is set as 0, that shows No.0 outdoor parameter; set as 1, that shows No.1 outdoor parameter... (Master unit can display the other outdoor parameter and indoor parameter, but the slave unit only displays its own parameter).
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SW10 SW11 Function Digital tube LD1- 4 display Unit No. Pd pressure Unit:kg, 2 decimals Ps Pressure Tdi discharging temp. Twi water inlet temp. of the water heat exchanger Two2 water outlet temp. of the water heat exchanger Toil temp. Tao ambient temp.
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3)Master unit information center: display parameters of the whole system SW10 SW11 Function Operation Refrigerant type 410A: R-410A refrigerant LD1: qty of outdoor Total qty and capacity of outdoor LD2:displays“-” units in the same system LD3/ LD4:total capacity of outdoor(unit: HP) Eg, 3-48 represents 3 outdoors with total capacity of 48HP Total capacity of indoors 50.0: 50HP...
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SW10 SW11 Function Operation Press SW2(UP) for 2 secs continuously, display 1111 and start up; Press SW1(DN) Cancel all manual for 2 secs continuously, display 0000 and stop. Cancel items: wrong wiring controls(running type) inspection in cooling/heating mode; indoor unit running/stop totally; compulsory operation;...
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4)Outdoor valves’ spare parts control SW10 SW11 Function Operation Manual control 4WV switch Manual control SV1 switch Manual control SV3i switch Manual control SV31switch Manual control SV6 switch Manual control SV9 switch Display current state of spare parts, 1: On, 0: Off Press SW2(UP) for 2 secs continuously, displaying 1111 then come Control SV10 switch into the setting state with blinking display: press SW2(UP) to open;...
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6) EE data inquiry SW10 SW11 Function Digital tube LD1-4 display 000H address’s EE data (E2 version) 001H address’s EE data … … … 00FH address’s EE data EE’s previous 256 byte data display (system parameter info) 010H address’s EE data Address calculating method: addr.
17. Outdoor unit control 17.1 Compressor startup control On startup, inverter compressor will keep for 3 min at 50rps(Tao≥0 C) or 60rps(Tao < 0 ℃ ), then if Tdi SH is still less than 25 ℃ , compressor will increase frequency up to 100rps. If startup is for 15min or TdiSH is more than 25 ℃ , quit startup and enter normal operation.
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Entering condition: When the unit has run in heating mode for 33 minutes and the compressor has run for 50 minutes accumulatively since the last defrosting. By measuring the defrosting sensor Tdef1 or Tdef2 and outdoor ambient temp. sensor TA , any outdoor can meet the below conditions for 5 minutes, this outdoor will enter defrosting operation.
18. Failure code Failure code description: (failure code of the whole system is showed as 8 bits, so totally 256 codes. Indoor failure code should be judged by the table and the unit number) • Outdoor failure code exists in EEPROM, in which 5 failure codes can be kept. •...
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Indication LD indication on wired on master Failure code definition Failure description Remarks controller unit (hex) Ambient temp. sensor Tao failure AD value is detected below 11(open circuit) or above Resumable 1012 (short circuit) for 60 secs. Suction temp. sensor Tsi 22-0 failure AD value is detected below 11(open circuit) or above...
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Indication indication on wired Failure code definition Failure description Remarks on master controller unit (hex) For continuous 200 cycles’detection, connected indoors 26-0 cannot found. Outdoor and indoor Resumable For continuous 270 secs detection, qty of indoors is less than communication failure 26-1 the set qty.
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Indication indication on wired Failure code Failure description Remarks on master controller definition unit (hex) 33-0 EEPROM communication failure Once EEPROM confirmation, (AT24C04) 33-1 EEPROM data check failure(model code, check sum etc.) failure Unresumable EEPROM data check failure(data beyond limit, reverse sequence 33-2 etc.) Tdi / Td1≥130°C (E).
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Indication LD indication on wired Failure code on master Failure description Remarks controller definition unit (hex) 37-0 S phase default Default phase of 37-1 3-phase power T phase default Once confirmation, supply or phase Unresumable S phase and T phase are normal, but sequence(phase reversion) 37-2 sequence error is wrong...
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Indication indication on wired Failure code definition Failure description Remarks on master controller unit (hex) After compressor starts up, Pd≥4.15MPa continues for High pressure sensor Pd 2 secs, stop and alarm. Resume automatically after Once confirmation, protection against too high 170 secs.
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Indication LD indication on wired on master Failure code definition Failure description Remarks controller unit (hex) Communication among outdoors No communication within 3 minutes continuously Resumable failure Communication with No communication within 30 seconds continuously Resumable inverter module failure No pressure drop between In 1min after inverter compressor starts up, Pd-Ps≤0.1MPa.
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Indication indication on wired Failure code Failure description Remarks on master controller definition unit (hex) Unmatch In VRF system, alarm if the capacity difference between combination of slave and master units is larger than 6HP. outdoors Indoor DIP switch According to PCB special No., outdoor model DIP switch setting failure errors are detected.
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Indication indication on wired Failure code Failure description Remarks on master controller definition unit (hex) Abnormal If failed to detect the communication signal for 30 secs, error communication with alarms. INV control board will promptly resume when detecting module that. Module software: over Module software over current Four times an hour,...
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When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by code: 555.0 Standby state of capacity overmatch When capacity is over 135% or lower than 50%, the system is standby. When it is in heating mode with ambient temperature over 26 degree, the system is 555.1 Standby state of 26 degree heating mode...
19. Troubleshooting Indoor failure diagnose [08]indoor drainage system failure/float switch circuit on indoor PCB failure if CN13 is fixed well reconnect if float switch works if CN4 is modify the wiring with AC220V and the circuit voltage check indoor PCB and replace it if necessary if water pump works check water pump...
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[05] EEPROM failure if the chip is fixed well reconnect replace it if the chip is damaged check if PCB is faulty , if yes, replace it [09]indoor address repeated if wiring between Pand modify the wiring Q is normal if communication wire is modify the communication wire connected with multi...
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[06]communication circuit between indoor and outdoor if wiring between Pand modify the communication wire Q is wrong or broken down if the port of CN15 on modify the port indoor PCB is normal if the port of CN19 on outdoor connecting board is normal electrify the outdoor if outdoor power source is normal...
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[07]communication abnormal between indoor and wired controller if wiring of terminal A, B, C of modify the wiring wired controller is proper if there is broken wire or port is modify the connection fixed improperly if in group operation set one indoor if there is indoor unit unit as No.
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Outdoor failure diagnose [20~25, 32] temperature sensor failure reconnect if sensor terminal is fixed well if sensor resistor replace sensor /characteristic is proper check if PCB is faulty , if yes, replace it [27] protection of oil temperature too high reconnect if sensor terminal is fixed well if sensor resistor...
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[26]communication circuit between indoor and outdoor if wiring between Pand modify the communication wire Q is wrong or broken down if wire of CN29 on outdoor modify the port connecting board is normal if wire of CN15 on indoor PCB is normal if indoor and outdoor are connect power source electrified at the same time...
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[28, 29] High/low pressure sensor failure if sensor terminal is fixed reconnect well if voltage between red terminal and black terminal replace PCB is 5V when testing pressure sensor by multimeter if voltage between white terminal and black terminal replace pressure sensor is 0.5V~3.5V when testing pressure sensor by multimeter...
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[30-0,30-1,30-2]high pressure switch shut off failure if connection between re-connect pressure switch and connecting board is good if the system pressure meets replace pressure switch the condition that pressure switch shuts off make pressure switch close, measure if terminal is conductive by multimeter if the system is clogged check the piping system...
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[35] 4-way valve reversing fail u re if connection between re-connect 4-way valve and connecting board is good if Tsuc is fixed well and fix again or replace the sensor if its characteristic is correct if system meets condition check if SV1 leaks of 4-way valve reversing: Pd-Ps>0.6MPa measure if CN49...
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[36] protection of oil temperature too low if Toil is fixed well and fix again or replace the sensor if its characteristic is correct in cooling mode, check check indoor electronic if electronic expansion valve expansion valve of indoor unit which is not running does not close fully in heating mode, check...
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[39-0, 39-1] low pressure too l o w and compression ratio too high if actual pressure is in replace pressure sensor conformance with the measured data by sensor check if stop valve is open open stop valve fully check if system is lack recharge refrigerant of refrigerant check if terminal of...
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[40] high pressure protection if characteristic of replace pressure sensor high pressure sensors are normal open stop valve if stop valve opens fully if in cooling outdoor check fan motor fan motor runs normally if in heating indoor check indoor fan motor runs normally and if filter is clogged check if piping system is...
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41. Unit protection for inlet water temperature too low /too high (water-cooled VRF) If water pump is Check water pump running normally Check pipe system If pipe is am Replace connection board...
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[43-0, 43-1] protection of discharging temperature too low if Toil is fixed well and fix again or replace the sensor if its characteristic is correct in cooling mode, check check indoor electronic if electronic expansion valve expansion valve of indoor unit which is not running does not close fully in heating mode, check...
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[45] communication among outdoors failure check if communication wire re-connect among outdoors is connected normally check if communication replace outdoor communication wire among outdoors is wire broken down if outdoor unit number re-set unit number is set correctly if there is interference in remove the interference the place where outdoor is installed...
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[46] communication with inverter module failure check if communication wire re-connect between connecting board and module is connected normally check if dip switches are set as folowing: re-set dip switch BM3-4 OFF; BM5-5, BM5-6 OFF; BM5-7, BM5-8 ON check if communication replace wire wire is broken down measure if voltage of...
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[75-0, 75-4] pressure drop too low between high pressure and low one check if high/low pressure re-connect sensor is connected well check if compressor correct compressor wire wire is connected normally if wires of inverter correct compressor wire compressor are connected oppositely if 4-way valve is replace 4-way valve...
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[76] outdoor address or capacity setting incorrect cut off power supply and search if outdoor horse power is EEPROM again changed (76-2) cut off power supply and search if outdoor quantity is changed(76-0) EEPROM again set unit number again, cut off if outdoor unit number is power supply and search correct(76-1)
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[110] power module overcurrent check if voltage of power improve power supply circuit supply is normal check if wire of electric box is correct, and if correct the wiring due to diagr am compressor wire is fixed well if compressor is replace compressor normal(compressor coil resistor, insulation)
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[111] compressor out of control check if voltage of power improve power supply circuit supply is normal check if wire between inverter board and IPM correct the wiring due to diagram driving board, and wire between IPM and compressor are correct if PWM signal on replace control board inverter board and IPM...
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[112] radiator of transducer temp.too high replace radiating if radiating fan is if fan is broken down running if terminal of fan is fix it well fixed well check if there is 220V output on control board if screw of module is fix it well and fixed well, and if radiating silica gel is...
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[114] voltage too low of DC bus line of transducer check if voltage of power improve power supply circuit supply is normal check if wire of electric correct the wiring due to diagram box is correct if AC contactor adjust or replace relay or relay acts well measure if DC bus circuit of DC bus line voltage on...
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[116] communication abnormal between transducer(inverter module board) and control PCB check if wire between adjust communication wire control PCB and inverter board is abnormal check if communication circuit of main control PCB is replace main control board abnormal(if signal LED flashes abnormally) detecting circuit on inverter if inverter module...
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[118] compressor startup failure because of overcurrent or overheat check if voltage of power improve power supply circuit supply is normal check if wire between inverter board and IPM driving board, and wire correct the wiring due to diagram between IPM and compressor are correct;...
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[120] power supply of transducer abnormal check if voltage of power improve power supply circuit supply is normal check if wire of electric correct the wiring due to diagram box is correct if relay or AC adjust or replace relay or AC contactor acts contactor well...
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[121] power supply of inverter board is abnormal check if voltage of power improve power supply circuit supply on inverter control board is normal check if wire between adjust communication wire control PCB and inverter board is abnormal check if communication circuit of main control PCB is replace main control board abnormal(if signal LED...
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[122] radiator temp.sensor of transducer abnormal check if connection betwee n adjust connection temp.sensor and inverter board measure if temp.sensor replace sensor resistor is normal replace inverter control board [125] compressor frequency not match well replace power module check if power module is n ormal solve the failures due to relative information [127] MCU reset abnormal...
Appendix I Accessories List Photo Name Model Function Application Comments Standard for High Wall, Remote YR-H71 Indoor Unit Operating Console, and optional for Controller Cassette, Convertible, Duct Indoor Unit Operating and Standard for Cassette, Wired YR-E14 Group Control Convertible, Duct and Built-in Controller (Max.
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BACnet IP and Remote modbus,monitor and monitoring HCM-05A control to the whole MRV All Indoor Units version 5 BMS system, max 500 indoor system units BacNet IGU02 Protocol Translator All Indoor Units Gateway LonWorks LonWorks IGU07 All Indoor Units Gateway Protocol Converting Modbus Protocol adapter and data...
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Haier Commercial Air Condition ADDRESS: No.1 Haier Road, Hi-tech Zone,Qingdao 266101 P.R.China Web: Http://www.haier.com Haier reserves the right to make change without any notice.