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Haier MRVII-S AU28FHEPA Design, Installation & Maintenance Instruction
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Haier MRVII-S AU28FHEPA Design, Installation & Maintenance Instruction

R410a, 50hz
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Summary of Contents for Haier MRVII-S AU28FHEPA

  • Page 2 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 3 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 4 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 5 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 6 AU282FHERA one-way valve liquid pipe strainer PMV strainer strainer accumulator 4-way valve gas pipe strainer oil segregator strainer oil return capillary compressor gas-liquid segregator 图例 connected disconnected outdoor indoor MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 7 AU48NFIERA AU60NFIERA one-way valve liquid pipe 室外 HEX strainer strainer PMV strainer accumulator 4-way valve gas pipe strainer SV1 strainer oil segregator strainer oil return capillary compressor gas-liquid segregator legend connected disconnected outdoor indoor MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 8 @>/-;? MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 9 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 10 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...

  • Page 11: Control Board

    AU28: 0150503461 COMP FAN MOTOR HEATER STARTUP CAPACITOR 4-WAY VALVE SPRAY VALVE CN5(U) CON2 CN6(V) CN14 4-WAY CON3 CN7(W) HEATER ACFAN1 I P M CN11 control board ISPM TEMPERATURE SENSOR CN4(PTC) CN19 NOISE FILTER MODULE_COM )CN21 CN10 OUT/IN_COM P M V W：white R：red B：black BL：blue communication wire...
  • Page 12 AU48/60N: 0150502942 CN21 OUT/IN_COM CN24 CN11 CON3 MOD BUS MODULE_COM LED-DISPLAY CN7 TA CN6 TS CN5 TC SCP2 SCP1 CN4 TE CN3 TD CN2 LP (DOWN) (UP) CN1 HP ACFAN1 ACFAN2 － － ＋ CN14 CN18 CN17 CN25 CN16 CN15 CN19 HEATER E N L3 L2 L1...
  • Page 13 AU282FHERA cooling mode indoor temp. (℃WB) outdoor capacity 14(℃) 16(℃) 18(℃) 19(℃) 20(℃) 22(℃) 24(℃) temp. factor (℃DB) 1.12 1.36 9.84 1.59 10.51 1.79 10.9 1.74 11.3 1.59 11.4 1.44 1.18 1.42 9.84 1.66 10.51 1.78 10.6 1.75 10.9 1.68 11.1 1.60 1.23...
  • Page 14 0.75 0.90 6.05 1.05 6.48 1.13 1.21 1.40 1.68 0.81 1.00 6.05 1.21 6.48 1.32 1.44 1.68 2.08 0.96 1.19 6.05 1.44 6.48 1.57 1.71 2.00 2.31 1.13 1.40 6.05 1.69 6.48 1.85 2.01 2.36 2.72 1.35 1.63 6.05 1.98 6.48 2.16 2.36...
  • Page 15 AU48NFIERA cooling mode indoor temp. (℃WB) outdoor 14(℃) 16(℃) 18(℃) 19(℃) 20(℃) 22(℃) 24(℃) capacity temp. factor (℃DB) 13.6 2.38 16.0 2.88 18.45 3.37 19.71 3.79 20.5 3.70 21.1 3.37 21.4 3.05 13.6 2.50 16.0 3.01 18.45 3.52 19.71 3.78 19.9 3.72 20.4...
  • Page 16 1.60 1.91 11.35 2.23 12.15 2.40 12.8 2.57 14.3 2.97 15.9 3.56 1.72 2.13 11.35 2.57 12.15 2.80 12.8 3.05 14.3 3.56 15.9 4.42 2.04 2.52 11.35 3.05 12.15 3.33 12.8 3.62 14.3 4.23 15.9 4.90 2.40 2.97 11.35 3.59 12.15 3.92 12.8...
  • Page 17 AU60NFIERA cooling mode indoor temp. (℃WB) outdoor 20(℃) 22(℃) 24(℃) 14(℃) 16(℃) 18(℃) 19(℃) capacity temp. factor (℃DB) 16.3 2.74 19.2 3.31 22.14 3.87 23.65 4.36 24.6 4.25 25.3 3.88 25.7 3.51 16.3 2.87 19.2 3.46 22.14 4.06 23.65 4.35 23.9 4.28 24.5...
  • Page 18 10.0 1.75 11.8 2.10 13.62 2.46 14.58 2.64 15.4 2.82 17.2 3.19 19.0 3.58 10.0 1.84 11.8 2.20 13.62 2.57 14.58 2.76 15.4 2.96 17.2 3.42 19.0 4.10 10.0 1.98 11.8 2.45 13.62 2.96 14.58 3.23 15.4 3.51 17.2 4.10 19.0 5.09 10.0...
  • Page 19 AU282FHERA heating mode indoor temp.℃DB 16.0 18.0 20.0 21.0 22.0 24.0 outdoor temp. capacity factor ℃DB ℃WB -14.7 -15.0 1.62 1.71 1.81 1.86 1.90 2.00 -12.6 -13.0 1.72 1.81 1.90 1.94 1.99 2.08 -10.5 -11.0 1.81 1.89 1.98 2.02 2.06 2.14 -9.5 -10.0...
  • Page 20 19.0 14.2 11.3 2.37 11.3 2.56 11.0 2.39 10.6 2.29 10.2 2.21 2.05 21.0 15.0 11.3 2.39 11.3 2.48 11.0 2.27 10.6 2.22 10.2 2.15 2.02 -14.7 -15.0 2.00 2.08 2.16 2.18 2.22 2.31 -12.6 -13.0 2.08 2.16 2.22 2.24 2.29 2.35 -10.5...
  • Page 21 -12.6 -13.0 2.45 2.50 2.54 2.56 2.60 2.50 -10.5 -11.0 2.50 2.54 2.58 2.60 2.52 2.33 -9.5 -10.0 2.52 2.56 2.60 2.54 2.43 2.24 -8.5 -9.1 2.54 2.58 2.56 2.47 2.37 2.20 -7.0 -7.6 2.56 2.60 2.45 2.35 2.26 2.10 -5.0 -5.6 2.60...
  • Page 22 AU48NFIERA heating mode indoor temp.℃DB 16.0 18.0 20.0 21.0 22.0 24.0 outdoor temp. capacity factor ℃DB ℃WB -14.7 -15.0 11.1 3.30 11.1 3.49 11.1 3.68 11.1 3.78 11.1 3.88 11.1 4.08 -12.6 -13.0 11.8 3.50 11.8 3.68 11.8 3.87 11.8 3.96 11.8 4.05...
  • Page 23 15.0 13.7 19.8 5.17 19.8 5.26 19.3 5.04 18.6 4.87 17.9 4.66 16.9 4.32 19.0 14.2 19.8 4.83 19.8 5.21 19.3 4.88 18.6 4.68 17.9 4.50 16.9 4.18 21.0 15.0 19.8 4.88 19.8 5.06 19.3 4.62 18.6 4.54 17.9 4.38 16.9 4.12 -14.7...
  • Page 24 -14.7 -15.0 11.1 4.87 11.1 5.00 11.1 5.09 11.1 5.13 11.1 5.17 10.7 5.30 -12.6 -13.0 11.8 5.00 11.8 5.09 11.8 5.17 11.8 5.21 11.6 5.30 10.7 5.09 -10.5 -11.0 12.3 5.09 12.3 5.17 12.3 5.26 11.8 5.30 11.6 5.13 10.7 4.74 -9.5...
  • Page 25 AU60NFIERA heating mode indoor temp.℃DB 16.0 18.0 20.0 21.0 22.0 24.0 outdoor temp. capacity factor ℃DB ℃WB -14.7 -15.0 12.7 3.79 12.7 4.02 12.7 4.24 12.7 4.35 12.7 4.47 12.7 4.69 -12.6 -13.0 13.4 4.03 13.4 4.24 13.4 4.45 13.4 4.56 13.4 4.66...
  • Page 26 15.0 13.7 22.6 5.95 22.6 6.05 22.0 5.80 21.3 5.61 20.5 5.36 19.3 4.97 19.0 14.2 22.6 5.56 22.6 6.00 22.0 5.62 21.3 5.38 20.5 5.18 19.3 4.81 21.0 15.0 22.6 5.61 22.6 5.82 22.0 5.32 21.3 5.22 20.5 5.04 19.3 4.74 -14.7...
  • Page 27 -14.7 -15.0 12.7 5.61 12.7 5.76 12.7 5.85 12.7 5.90 12.7 5.95 12.2 6.10 -12.6 -13.0 13.4 5.76 13.4 5.85 13.4 5.95 13.4 6.00 13.2 6.10 12.2 5.85 -10.5 -11.0 14.1 5.85 14.1 5.95 14.0 6.05 13.5 6.10 13.2 5.90 12.2 5.46 -9.5...
  • Page 28 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 29 + . 2 + . - MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 30 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 31 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 32 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 33 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 34 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 35 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 36 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 37 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 38 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 39 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 40 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 41 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 42 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 43 3. Note: For the indoor unit controlled by wired controller, if indoor unit is with the remote receiver, MUST pull out the white wire from the remote receiver connector. 4. Note: Correct procedure to shut off the unit: switch off the unit by the controller, then cut off the power source.
  • Page 44 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 45 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 46 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 47 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 48 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 49 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 50 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 51 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 52 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 53 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 54 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 55 < . < / <0 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 56 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 57 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 58 < < / MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 59 < MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 60 8.2= MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 61 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 62 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...

  • Page 63: Troubleshooting

    Troubleshooting: 1.Communication failure Is number of indoor units indicated by testing board Communication normal correct? Changeable? Is indoor unit address properly set? Without Reset address repetition? Are communication terminals of Reconnect indoor and outdoor units securely connected? Use shielded wire. Shield layer Is shielded wire should be grounded at single used for...

  • Page 64: Eeprom Failure

    2.Sensor failure Are connectors of sensor properly Reconnect connected? Are resistance and temperature Replace sensor characteristics of sensor acceptable? Check PCB and replace 3.EEPROM failure Reinstall in right direction EEPROM chip installed firmly Is the PCB poorly Normal w elded? If chip is broken? Replace chip Check PCB and replace...
  • Page 65 5. Discharging temperature protection Are stop valves in gas pipe and liquid Open the stop valve pipe of outdoor unit open totally? Does EEV work properly during heating cycle? Check 1) Connector 2) Winding resistance 3) Repair outdoor EEV Valve 4) Mainboard Is actual discharging temperature detected Is discharging temperature Replace TD sensor...
  • Page 66 6. High pressure overhigh protection Are connectors of pressure switch Check and reconnect in good condition? replace PCB Is high pressure switch activated? Is pressure value detected by Replace high pressure switch pressure gauge above 3MPa? Are stop valves in suction pipe and liquid pipe of Open stop valve outdoor unit open?
  • Page 67 7 . Low pressure too low protection Are connectors of CN317pressure switch Check and reconnect in good condition? Is low side pressure switch activated? Replace PCB Is pressure valve detected by pressure gauge lower than Replace low pressure switch 0.05MPa? If outdoor stop valves of gas pipe Open stop valve and liquid pipe are open totally...
  • Page 68 8. Suction temperature protection Measure if the actual air return Check the suction temperature is over 40degree temperature Check the system: if the stop valve is normal; if EEV works normally; if the system is lack of refrigerant; if the system is clogged or leaks 9.
  • Page 69 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...
  • Page 70 6 @? MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005, www.mbfrigo.hr, e-mail: info@mbfrigo.hr...

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