MUND CLIMA MUPR-H4 Service Manual
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MUND CLIMA MUPR-H4 Service Manual

Inverter serie h4
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INVERTER SERIE H4

Service Manual

MUPR-H4
CL20805 to CL20808
12FSI-B1-1406
English

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Summary of Contents for MUND CLIMA MUPR-H4

  • Page 1: Service Manual

    INVERTER SERIE H4 Service Manual MUPR-H4 CL20805 to CL20808 12FSI-B1-1406 English...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution ..............................3 1.1 Safety Precaution .......................... 3 1.2 Warning ............................3 2. Function ................................ 7 3. Dimension ..............................8 3.1 Indoor Unit ............................. 8 3.2 Outdoor Unit ..........................10 4. Refrigerant Cycle Diagram ........................11 5. Wiring Diagram ............................12 5.1 Indoor Unit ...........................

  • Page 3: Precaution

    1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service the unit, be sure to read this service manual at first. 1.2 Warning Installation Do not use a defective or underrated circuit breaker.
  • Page 4 For installation, always contact the dealer or an authorized service center. Do not install the product on a defective installation stand. Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
  • Page 5 Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) There is risk of physical injury, electric shock, or product failure. When the product is soaked, contact an authorized service center. There is risk of fire or electric shock.
  • Page 6 Operational Do not expose the skin directly to cool air for long time. (Do not sit in the draft). Do not use the product for special purposes, such as preserving foods, works of art etc. It is a consumer air conditioner, not a precision refrigerant system. There is risk of damage or loss of property.

  • Page 7: Function

    2. Function Model Names of Indoor/Outdoor Units Capacity Indoor units Outdoor units MUPR-09-H4 MUPR-09-H4 MUPR-12-H4 MUPR-12-H4 Inverter MUPR-18-H4 MUPR-18-H4 MUPR-24-H4 MUPR-24-H4 2 ways of drainage Filter Killer Of Formaldehyde Louver Position Memory Function Ionizer(O) Refrigerant Leakage Detect Silver Ico Filter(O) Self-diag.

  • Page 8: Dimension

    3. Dimension 3.1 Indoor Unit Model MUPR-09-H4 MUPR-12-H4 MUPR-18-H4 1045 MUPR-24-H4 Dimension of installation Model A(mm) B(mm) C(mm) D(mm) hole(mm) MUPR-09-H4 ￠65 MUPR-12-H4...
  • Page 9 Dimension of installation Model A(mm) B(mm) C(mm) D(mm) hole(mm) MUPR-18-H4 ￠65 Dimension of installation Model A(mm) B(mm) C(mm) D(mm) hole(mm) MUPR-24-H4 1045 ￠65...

  • Page 10: Outdoor Unit

    3.2 Outdoor Unit More than 30cm More than 60cm (Service space More than 30cm More than 60cm More than 200cm Model MUPR-09-H4 MUPR-12-H4 MUPR-18-H4 MUPR-24-H4...

  • Page 11: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp. sensor GAS SIDE 4-WAY VALVE 3-WAY VALVE Accumulator...

  • Page 12: Wiring Diagram

    5. Wiring Diagram 5.1 Indoor Unit MUPR-09-H4 MUPR-12-H4 MUPR-18-H4...
  • Page 13 MUPR-24-H4...

  • Page 14: Outdoor Unit

    5.2 Outdoor Unit MUPR-09-H4...
  • Page 15 MUPR-12-H4 MUPR-18-H4...
  • Page 16 MUPR-24-H4...

  • Page 17: Installation Details

    6 Installation Details 6.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque inch N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) Ф15.9 4500(459kgf.cm) 4700(479kgf.cm) Ф19 6500(663kgf.cm) 6700(683kgf.cm) 6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6...

  • Page 18: Pipe Length And The Elevation

    6.3 Pipe length and the elevation The pipe length and refrigerant amount: Pipe size Standard Max. Max. Additional Model length Elevation Length refrigerant B (m) A (m) (g/m) Liquid MUPR-09-H4 3/8’’ 1/4’’ (Ф9.52) (Ф6.35) MUPR-12-H4 1/2’’ 1/4’’ MUPR-18-H4 (Ф12.7) (Ф6.35) 5/8"...

  • Page 19: Installation For The First Time

    6.4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below: ● Pressure in the system rises. ● Operating current rises. ● Cooling or heating efficiency drops. ● Moisture in the refrigerant circuit may freeze and block capillary tubing. ●...
  • Page 20 1) Completely tighten the flare nuts of the indoor and outdoor units, confirm that both the 2-way and 3-way valves are set to the closed position. 2) Connect the charge hose with the push pin of handle lo to the 3-way valves gas service port.. 3) Connect the charge hose of handle hi connection to the vacuum pump.
  • Page 21 2. Air purging by refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve. 3). Air purging. Open the valves on the charging cylinder and the charge set.
  • Page 22 3. Adding the refrigerant if the pipe length >5m Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

  • Page 23: Adding The Refrigerant After Running The System For Many Years

    6.5 Adding the refrigerant after running the system for many years Electronic scale Procedure: 1). Connect the charge hose to the 3-way service port, open the 2-way valve and the 3-way valve. Connect the charge hose to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.

  • Page 24: Re-Installation While The Indoor Unit Need To Be Repaired

    6.6 Re-installation while the indoor unit need to be repaired 1. Collecting the refrigerant into the outdoor unit Procedure 1). Confirm that both the 2-way and 3-way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems.
  • Page 25 2. Air purging by the refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve Leave the valve on the charging cylinder closed. 3).

  • Page 26: Re-Installation While The Outdoor Unit Need To Be Repaired

    6.7 Re-installation while the outdoor unit need to be repaired 1. Evacuation for the whole system Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the opened position. 2). Connect the vacuum pump to 3-way valve’s service port. 3).
  • Page 27 2. Refrigerant charging Procedure: Electronic scale 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

  • Page 28: Operation Characteristics

    7. Operation Characteristics Temperature Cooling operation Heating operation Drying operation Mode Room temperature ≥17℃ ≤30℃ ＞10℃ 0℃～50℃ -15℃～50℃ Outdoor temperature -15℃～30℃ 0℃～50℃ (For the models with low temperature cooling system) CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 29: Electronic Function

    8. Electronic function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. ION indication lamp(optional function)： ： ： ： This lamp illuminates when Clean Air Fresh feature is activated.

  • Page 30: Main Protection

    8.3 Main Protection 8.3.1 Time delay at restart for compressor 1 minute delay for the 1 time start-up and 3 minutes delay for others. 8.3.2 Temperature protection of compressor top The unit will stop working when the compressor top temp. protector cut off, and will restart after the compressor top temp.
  • Page 31 Preheating release condition: If T4＞5℃ or the compressor starts running, the preheating function will stop. 8.3.8 Sensor protection at open circuit and breaking disconnection. When there’s one temperature sensor in malfunction, the air conditioner will display error code and will not stop immediately, to avoid the case that the air conditioner is in urgent need.

  • Page 32: Operation Modes And Functions

    8.4 Operation Modes and Functions 8.4.1 Fan mode (1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto. (4) The louver operates same as in cooling mode. (5) Auto fan: T 1 - 2 4 6 .
  • Page 33 8.4.2 Cooling Mode 8.4.2.1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule. Fmax=T4FREMAX1 Fmax=T4FREMAX2 Fmax=T4FREMAX3 Fmax=T4FREMAX4 Fmax=T4FREMAX5 Fmax=T4FREMAX6 Fmax=T4FREMAX7 Meanwhile, the maximum frequency is limited by the indoor fan speed. Indoor fan speed Maximum frequency High speed / turbo function No limit...
  • Page 34 T1-Ts -1.0 -1.5 While the zones of A,B,C... are corresponding to different compressor running frequency. Note: When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below rules: A:Increase the frequency to 3 grade higher until to FREMAX. B~E: Increase the frequency to 2 grade higher until to FREMAX.
  • Page 35 8.4.2.2 Outdoor fan running rules Cooling While A,B,C means different fan speed of outdoor unit. 8.4.2.3 Indoor fan running rules In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low, auto and silent.
  • Page 36 The auto fan acts as below rules: T1-Ts (H-L)*0.75+L (H-L)*0.5+L (H-L)*0.25+L 8.4.2.4 Condenser temperature protection - 55℃<T3<60℃, the compressor frequency will decrease to the lower level until to F1 and then runs at F1. If T3<54℃, the compressor will keep running at the current frequency. - T3<52℃, the compressor will not limit the frequency and resume to the former frequency.
  • Page 37 8.4.3 Heating Mode 8.4.3.1 Compressor running rules The maximum operation frequency of the compressor after starting submits to the following rule. Fmax=T4FREHEATMAX1 Fmax=T4FREHEATMAX2 Fmax=T4FREHEATMAX3 Fmax=T4FREHEATMAX4 Fmax=T4FREHEATMAX5 Fmax=T4FREHEATMAX6 Fmax=T4FREHEATMAX7 Fmax=T4FREHEATMAX8 Fmax=T4FREHEATMAX9 Fmax=F21 Fmax=F22 Fmax=F23 Fmax=F24 Fmax=F25...
  • Page 38 Meanwhile, the maximum frequency is limited by the indoor fan speed. Indoor fan speed Maximum frequency High speed/8 degree heating/ turbo function No limit Medium speed FHeatMaxMidFan Low speed/sleep mode FHeatMaxLowFan Silent mode Fixed at F3 If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp.
  • Page 39 Meanwhile, the compressor running frequency is limited by the current. HeatT4Zone4I HeatT4Zone3I HeatT4Zone2I HeatT4Zone1I 8.4.3.2 Outdoor fan running rules Heating 8.4.3.3 Indoor fan running rules In heating mode, indoor fan can be selected as high, medium, low, auto and silent. The anti-cold- wind function is preferential.
  • Page 40 If the compressor stops caused by the room temperature rising, the indoor fan will be forced to run 127 seconds with breeze. During this period, the anti-cold-wind is disabled. Auto fan action in heating mode: T1-Ts+¦ ¤ T -1.0 (H+-L)*0.2+L -2.0 (H+-L)*0.4+L -3.0...
  • Page 41 Condition of ending defrosting: If any one of the following items is satisfied, the defrosting will finish and the machine will turn to normal heating mode. T3 rises to be higher than TCDE1℃. T3 keeps to be higher than TCDE2℃ for 80 seconds. The machine has run for 10 minutes in defrosting mode.
  • Page 42 Defrosting action： ： ： ： For MUPR-09-H4 and MUPR-12-H4: Compressor 4-way valve Outdoor fan no longer than 10m xx = 20. For MUPR-18-H4 and MUPR-24-H4: Compressor 4-way valve Outdoor fan no longer than 10m xx = 20...
  • Page 43 8.4.3.5 Evaporator coil temperature protection TEstop Decrease TEdown Hold TEnorm Resume Off: Compressor stops. Decrease: Decrease the running frequency to the lower level. Hold: Keep the current frequency. Resume: No limitation for frequency. 8.4.4 Auto-mode This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃.
  • Page 44 8.4.5.2 Compressor running rules T1-Ts 8.4.5.3 Low indoor room temperature protection In drying mode, if room temperature is lower than 10℃, the compressor will stop and not resume until room temperature exceeds 12℃. 8.4.5.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode.
  • Page 45 8.4.7.3 Timer off. The machine will turn off automatically when reaching the setting time. 8.4.7.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time, and then turn off automatically when reaching the setting “off” time. 8.4.7.5 Timer off/on.
  • Page 46 8.4.10 8℃ ℃ ℃ ℃ Heating (optional) In heating operation, the preset temperature of the air conditioner can be as lower as 8℃, which keeps the room temperature steady at 8℃ and prevents household things freezing when the house is unoccupied for a long time in severe cold weather.
  • Page 47 8.4.12 Compatible with the new adjustment control RG52I (Only for installers) Through RG52I controller, five function parameters of air conditioners can be adjusted immediately. There is no need to change the chip anymore. 1, Auto restart function Press “ADJUST” button, choose “F1”. Press “MODIFY” button, Press “ADJUST”...
  • Page 48 8.4.13 Point check function Press the “LED DISPLAY” button of remote controller three times(“Swing button” for some remote controllers) and then press “AIR DIRECTION” button three times, the air conditioner will enter the “information enquiry” status. After that, press the “LED DISPLAY” button to enquiry the next one information and press the “AIR DIRECTION”...
  • Page 49 Indoor unit 0-FF For the detailed status 1 meaning, please consult with engineer Outdoor unit 0-FF For the detailed status meaning, please consult with engineer Outdoor unit 0-FF For the detailed protection meaning, please status 1 consult with engineer Outdoor unit 0-FF For the detailed protection...

  • Page 50: Troubleshooting

    9. Troubleshooting 9.1 Indoor Unit Error Display Operation lamp Timer lamp Display LED STATUS ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error Zero crossing signal detection error (only for ☆ 3 times MUPR-09-H4, MUPR-12H4 and MUPR-24-H4) ☆...

  • Page 51: Diagnosis And Solution

    9.2 Diagnosis and Solution 9.2.1 EEPROM parameter error diagnosis and solution(E0) EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
  • Page 52 9.2.2 Indoor unit and outdoor unit communication protection error diagnosis and solution (E1) Power off, then turn on the unit 5 seconds later(reconnect the power wire).Is the error still displaying after several minutes? Check all the wirings between indoor and outdoor, indoor main PCB and outdoor main PCB following the wiring diagram.
  • Page 53 9.2.3 Zero crossing detection error diagnosis and solution (E2) 9.2.4 Fan speed has been out of control diagnosis and solution (E3/F5)
  • Page 54 Index 1: 1. Indoor AC Fan Motor Measure the resistance value of each winding by using the tester. Position Resistance Value RPG20E RPG45C 430 Ω ±8% (20 ℃ ) 388 Ω ±8% (20 ℃ ) 175 Ω ±8% (20 ℃ ) 168 Ω...
  • Page 55 3. Outdoor or indoor DC Fan Motor (control chip is in on PCB) For WZDK36-38G-W : 1) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not equal to each other, the fan motor must has problems and need to be replaced. Otherwise, go to step 2.
  • Page 56 2. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced.
  • Page 57 9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3)
  • Page 58 9.2.6 Refrigerant Leakage Detection diagnosis and solution (EC) Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Check if T2 sensor is well Is there cool air blowing fixed. Correct the installation or replace T2 sensor.
  • Page 59 9.2.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution (P0)
  • Page 60 9.2.8 Over voltage or too low voltage protection diagnosis and solution (P1) Disconnect the unit with power Check if the power supply is supply and try to restart the unit normal. when power supply gets normal. Check if all the connections Correct the connections or replace and wires are good? the wires.
  • Page 61 9.2.9 High temperature protection of compressor top diagnosis and solution (P2) Check if the air flow system Clear up the air inlet and outlet or the heat of indoor and outdoor units exchanger of indoor and outdoor units. are obstructed? Turn off the power supply and turn it on 10 minutes later.
  • Page 62 9.2.10 Inverter compressor drive error diagnosis and solution (P4)
  • Page 63 Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Connect discharge resistance (approx.100 Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.
  • Page 64 Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter. Table 1: Some frequently-used R-T data for T1, T2, T3 and T4 sensor: Temperature ( ℃...
  • Page 65 Spec. Code 2T0032300888 2T0032400274 2T0032800688 2T0032900557 Model MUPR-09-H4 MUPR-12-H4 MUPR-18-H4 MUPR-24-H4 Compressor ASN108D22UEZ ASN108D22UEZ DA130M1C-31FZ DA150S1C-20FZ WZDK30-38G Indoor fan motor RPG20E RPG20E RPG45C ( ☆ ) Outdoor fan WZDK36-38G-W WZDK36-38G-W WZDK36-38G-W WZDK50-38G motor ( ★ ) ( ★ ) ( ★ ) ( ☆...
  • Page 66 ASK FOR MORE INFORMATION: Phone: 93 446 27 80 - Fax: 93 456 90 32 eMail: mundoclima@salvadorescoda.com TECHNICAL ASSISTANCE: Phone: 93 652 53 57 - Fax: 93 635 45 08...

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