Panasonic WH-MDC09C3E5 Servise Manual Download Page 95 | Manualshive

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16.5.15. Outdoor High Pressure Switch Activate (F12)

Malfunction Decision Conditions:

During operation of cooling and heating, when pressure 4.5MPa and above is detected by outdoor high pressure switch.

Malfunction Caused:

1. Dust accumulation on the outdoor unit heat exchanger.
2. Air short circuit at outdoor unit.
3. Faulty water pump.
4. Insufficient water flow rate in system.
5. Water leak in system.
6. 2/3 way valve closed.
7. Clogged expansion valve or strainer.
8. Excessive refrigerant.
9. Faulty outdoor high pressure sensor and switch.

10. Faulty outdoor unit PCB.

Abnormality Judgment:

Continue 4 times in 20 minutes.

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Summary of Contents for WH-MDC09C3E5

Page 1: ...r Conditioning M Sdn Bhd 2010 Unauthorized copying and distribution is a violation of law Order No PHAAM1008099C2 Monobloc Air to Water Heatpump System Monobloc Unit WH MDC09C3E5 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 ...

Page 2: ... 12 15 External Room Thermostat Control Optional 68 12 16 Two ways valve control 69 13 Protection Control 70 13 1 Protection Control For All Operations 70 13 2 Protection Control For Heating Operation 72 13 3 Protection Control For Cooling Operation 72 14 Servicing Mode 73 14 1 Test Run 73 14 2 Proper Pump Down Procedure 73 14 3 How To Adjust Water Flow Rate 73 14 4 Expansion Vessel Pre Pressure C...

Page 3: ...c unit and cross over the handrail and causing accident 9 For electrical work follow the local national wiring standard regulation and the installation instruction An independent circuit and single outlet must be used If electrical circuit capacity is not enough or defect found in electrical work it will cause electrical shock or fire 10 This equipment must be properly earthed Earth line must not ...

Page 4: ... of Monobloc unit might cause injury if carried by less than four persons 4 Do not touch Monobloc unit air inlet and aluminium fin It may cause injury 5 Select an installation location which is easy for maintenance 6 Pb free solder has a higher melting point than standard solder typically the melting point is 50 F 70 F 30 C 40 C higher Please use a high temperature solder iron In case of the solde...

Page 5: ... Fan Type Propeller Fan Material PP Motor Type Induction 8 poles Input Power W Output Power W 60 Fan Speed rpm Cooling 540 Top Fan 580 Bottom Fan Heating 490 Top Fan 530 Bottom Fan Heat Exchanger Fin material Aluminium Pre Coat Fin Type Corrugated Fin Row Stage FPI 2 51 18 Size W H L mm 881 5 1295 4 44 Item Unit Monobloc Unit Dimension Height mm inch 1410 55 5 Width mm inch 1283 50 5 Depth mm inch...

Page 6: ...ctronic Control Protection Device Electronic Control Item Unit Water System Performance Test Condition EUROVENT Operation Range Outdoor Ambient C Cooling 16 43 Heating 20 35 Water Outlet C Cooling 5 20 Heating 25 55 Internal Pressure Differential kPa Cooling 10 0 Heating 15 0 Refrigerant Pipe Diameter Liquid mm inch 9 52 3 8 Gas mm inch 15 88 5 8 Water Pipe Diameter Inlet mm inch 30 1 3 16 Outlet ...

Page 7: ...aterial PP Motor Type Induction 8 poles Input Power W Output Power W 60 Fan Speed rpm Cooling 600 Top Fan 640 Bottom Fan Heating 510 Top Fan 550 Bottom Fan Heat Exchanger Fin material Aluminium Pre Coat Fin Type Corrugated Fin Row Stage FPI 2 51 18 Size W H L mm 881 5 1295 4 44 Item Unit Monobloc Unit Dimension Height mm inch 1410 55 5 Width mm inch 1283 50 5 Depth mm inch 320 12 6 Net Weight kg l...

Page 8: ...n Device Electronic Control Item Unit Water System Performance Test Condition EUROVENT Operation Range Outdoor Ambient C Cooling 16 43 Heating 20 35 Water Outlet C Cooling 5 20 Heating 25 55 Internal Pressure Differential kPa Cooling 21 0 Heating 27 5 Refrigerant Pipe Diameter Liquid mm inch 9 52 3 8 Gas mm inch 15 88 5 8 Water Pipe Diameter Inlet mm inch 30 1 3 16 Outlet mm inch 30 1 3 16 Water D...

Page 9: ...aterial PP Motor Type Induction 8 poles Input Power W Output Power W 60 Fan Speed rpm Cooling 630 Top Fan 670 Bottom Fan Heating 540 Top Fan 580 Bottom Fan Heat Exchanger Fin material Aluminium Pre Coat Fin Type Corrugated Fin Row Stage FPI 2 51 18 Size W H L mm 881 5 1295 4 44 Item Unit Monobloc Unit Dimension Height mm inch 1410 55 5 Width mm inch 1283 50 5 Depth mm inch 320 12 6 Net Weight kg l...

Page 10: ...on Device Electronic Control Item Unit Water System Performance Test Condition EUROVENT Operation Range Outdoor Ambient C Cooling 16 43 Heating 20 35 Water Outlet C Cooling 5 20 Heating 25 55 Internal Pressure Differential kPa Cooling 25 0 Heating 36 0 Refrigerant Pipe Diameter Liquid mm inch 9 52 3 8 Gas mm inch 15 88 5 8 Water Pipe Diameter Inlet mm inch 30 1 3 16 Outlet mm inch 30 1 3 16 Water ...

Page 11: ... Motor Type Brushless 4 poles Rated Output kW 3 00 Fan Type Propeller Fan Material PP Motor Type Induction 8 poles Input Power W Output Power W 60 Fan Speed rpm Cooling 630 Top Fan 670 Bottom Fan Heating 580 Top Fan 620 Bottom Fan Heat Exchanger Fin material Aluminium Pre Coat Fin Type Corrugated Fin Row Stage FPI 2 51 18 Size W H L mm 881 5 1295 4 44 Item Unit Monobloc Unit Dimension Height mm in...

Page 12: ...mostat Electronic Control Protection Device Electronic Control Item Unit Water System Performance Test Condition EUROVENT Operation Range Outdoor Ambient C Cooling 16 43 Heating 20 35 Water Outlet C Cooling 5 20 Heating 25 55 Internal Pressure Differential kPa Cooling 28 0 Heating 47 5 Refrigerant Pipe Diameter Liquid mm inch 9 52 3 8 Gas mm inch 15 88 5 8 Water Pipe Diameter Inlet mm inch 30 1 3 ...

Page 13: ... protector to protect compressor Serviceability Improvement Breakdown Self Diagnosis function System Status Check Buttons for servicing purpose System Pumpdown Button for servicing purpose Front maintenance design for Monobloc unit Operation Condition NOTICE When the outdoor temperature is out of the above temperature range the heating capacity will drop significantly and Monobloc unit might stop ...

Page 14: ...14 4 Location of Controls and Components 4 1 Monobloc Unit ...

Page 15: ...he flow switch checks the flow in the water circuit and protects the heat exchanger against high pressure built up and the pump against damage Pressure Relief Valve The pressure relief valve prevents excessive water pressure in the water circuit 190kPa Electric Heater Additional heating capacity to the system when water and ambient temp is low Expansion Vessel Storage for exessive water ...

Page 16: ...16 4 1 2 Location of Control 4 1 2 1 Remote Control The user interface allows the installer and user to setup use and maintain the unit ...

Page 17: ...17 ...

Page 18: ...18 ...

Page 19: ...19 4 1 2 2 Weekly Timer Setting ...

Page 20: ...20 4 1 2 3 Setting Up The Special Functions ...

Page 21: ...21 5 Dimensions 5 1 Monobloc Unit ...

Page 22: ...22 6 Refrigeration And Water Cycle Diagram ...

Page 23: ...23 ...

Page 24: ...24 7 Block Diagram 7 1 WH MDC09C3E5 ...

Page 25: ...25 7 2 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 ...

Page 26: ...26 8 Wiring Connection Diagram 8 1 WH MDC09C3E5 ...

Page 27: ...27 ...

Page 28: ...28 8 2 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 ...

Page 29: ...29 ...

Page 30: ...30 9 Electronic Circuit Diagram 9 1 WH MDC09C3E5 ...

Page 31: ...31 ...

Page 32: ...32 9 2 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 ...

Page 33: ...33 ...

Page 34: ...34 10 Printed Circuit Board 10 1 Water System 10 1 1 Main Printed Circuit Board ...

Page 35: ...35 10 1 2 Solar Printed Circuit Board Optional ...

Page 36: ...36 10 2 Refrigerant System 10 2 1 Main Printed Circuit Board ...

Page 37: ...37 10 2 2 Capacitor Printed Circuit Board 10 2 3 Noise Filter Printed Circuit Board ...

Page 38: ...38 11 Installation Instruction Monobloc Unit Dimension Diagram ...

Page 39: ...39 Main Components ...

Page 40: ...on where suction side may be exposed directly to wind If Mono bloc unit installed near sea region with high content of sulphur or oily location e g machinary oil etc it lifespan maybe shorten When connecting solar pump station cable between Mono bloc unit and solar pump station the distance between both apparatuses shall be 2 8 meters and the length of the said cable must be shorter than 10 meter ...

Page 41: ... bloc unit indicate with WATER IN Connect the external of Mono bloc unit indicate with WATER OUT to boiler tank inlet Fail to connect the tube appropriately might causing the Mono bloc unit malfunction Choose proper sealer which can withstand the pressures and temperatures of the system Make sure to use two spanners to tighten the connection Further tighten the nuts with torque wrench in specified...

Page 42: ...drain hose to Monobloc Unit 11 4 Connect The Cord And Cable To Mono Bloc Unit REFER TO WIRING DIAGRAM AT UNIT FOR DETAIL 1 Cable connection to the power supply through isolating device Disconnecting means Isolating device Disconnecting means should have minimum 3 0 mm contact gap Connect the approved polychloroprene sheathed power supply 1 cord 3 4 0 or 6 0 mm2 and power supply 2 cord 3 4 0 mm2 an...

Page 43: ...prene sheathed cable connection refer to Diagram 4 2 7 Tank OLP s cable must be 2 min 0 5 mm2 double insulation layer of PVC sheathed or polychloroprene sheathed cable note if such connection deemed NO necessary for tank OLP please connect jumper between terminal no 13 and 14 8 Tank Sensor shall be resistance type please refer to Graph 4 1 for the characteristic and details of sensor Its cable sha...

Page 44: ...t s power supply 2 shall be connected to a suitable supply network with the following maximum permissible system impedance Zmax at the interface of point for models WH MDC09C3E5 0 236Ω Please liaise with supply authority to ensure that the power supply 2 is connected only to a supply of that impedance or less For WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 The equipment s power supply 1 complies with I...

Page 45: ...m the floor is 1 2 to 1 5 meters 1 Be sure to turn off the main power before installing and connecting the remote controller Otherwise it will cause the electrical shock 2 Use the attached accessories parts and specified parts for installation Otherwise it will cause the set to fall fire or electrical shock 3 Wire routing must be properly arranged so that control board cover is fixed properly If c...

Page 46: ... the screws as it may result in damage to the lower case 1 Embed an outlet box JIS C 8336 into the wall Outlet box may be purchased separately Medium sized square outlet box obtain locally Part No DS3744 Panasonic Co Ltd or equivalent 2 Secure the remote controller lower case to the outlet box with the two accessory screws 3 Make sure that the lower case is flat against the wall at this time with ...

Page 47: ...ase with the tabs provided 11 4 3 3 Connecting The Remote Controller Cable To Mono Bloc Unit 1 Remove the cabinet front plate and cabinet top plate 2 Connect the remote controller s connector to PCB CN REMOTE2 as shown in below illustration Refer wiring diagram for detail 3 Guide the remote controller cable through the clamper and Bushing Refer illustration How to connect Remote Controller to PCB ...

Page 48: ...en as base value for temperature shifting processes These shifting processes are depending on the Monobloc unit settings and the operation environment The final shifted value will be used as internal water setting temperature and it is updated continuously whenever the electrical power is supplied to the unit 12 1 2 Heating Operation 12 1 2 1 Thermostat control Compressor is OFF when Water Outlet ...

Page 49: ...itch and fix to room side 2 Heat pump operate follow normal cooling operation 3 Backup heater DOES NOT operate during cool mode 4 Solar 3 way valve operates follow solar operation specification 5 2 ways valve control 2 ways valve is closed Cool Mode Operation Time Chart ...

Page 50: ...r Outlet set temperature is set to Maximum 55 C at tank mode i Case 1 THERMO OFF TEMP 1 THERMO OFF TEMP Water set temperature 2 C 2 Tank temperature THERMO OFF TEMP for continuous 3 minutes heat pump OFF and water pump OFF THERMO ON TEMP 1 THERMO ON TEMP Water set temperature 3 C 2 When detect tank temperature THERMO ON TEMP water pump ON for 3 minute then heat pump ON Pump ON when Tank temperatur...

Page 51: ...me 3 C 2 Heat pump ON back when water outlet temperature tank temp when heatpump thermo off 3 C 3 Heat pump only ON back after water outlet temperature Heat pump THERMO ON TEMP water pump ON for 3 minutes Booster heater control 1 Booster heater turn On and OFF follow normal operation 2 Booster heater turn ON condition During startup time initialization Booster heater turn ON after DELAY TIMER When...

Page 52: ...52 Solar Priority is Set Solar Priority is Not Set ...

Page 53: ...ing operation Under solar priority set condition Always detect the tank temperature after heating heat up interval Switch only to tank heat up interval and start counting tank heat up timer when tank temperature THERMO ON TEMP AND solar 3WV OFF Under solar priority not set condition Always detect the tank temperature after heating heat up interval Switch only to tank heat up interval and start cou...

Page 54: ...om side THERMO ON TEMP 1 THERMO ON TEMP Heat pump tank target temperature 3 C 2 After Heating heat up interval always detect tank temperature Switch to next tank heat up interval when tank temperature THERMO ON TEMP and solar 3 way valve OFF 3 Backup heater control a During heating heat up interval Follow normal backup heater control operation b During tank heat up interval Backup heater OFF durin...

Page 55: ...55 Heat Tank Heating No Priority Solar Priority Set ...

Page 56: ...56 Heat Tank Heating No Priority Solar Priority Not Set ...

Page 57: ... unit Where by the internal water setting temperature is determined automatically depending on the outdoor temperature The colder outdoor temperatures will result in warmer water and vice versa The user has the possibility to shift up or down the target water temperature by remote control setting Outdoor temperature is updated every 30 minutes when operation ON ...

Page 58: ...alve control 3 ways valve switch and fix to room side 2 Heat pump operate follow normal heating operation 3 Backup heater operate follow normal operation 4 Solar 3 way valve operates follow solar operation specification 5 2 ways valve control 2 ways valve opens ...

Page 59: ...OFF If SET Switch pressed for less than 5secs immediately enter water temperature shift setting mode Once enter this setting mode SETTING display is ON This setting mode is used to easily shift the target water outlet temperature 12 1 10 Fan Motor Operation Fan motor is adjusted according to operation condition It starts when compressor starts operation and it stops 30 seconds after compressor sto...

Page 60: ...r pump will remain ON when compressor OFF due to thermostat OFF 12 3 Pump Down Operation Purpose Ensure the pump down operation when relocating or disposing of the unit The pump down operation will extract all refrigerant from the piping into the Monobloc unit 1 Make sure the OFF ON remote control LED is OFF no operation 2 Press the Pump Down button to start the pump down operation 3 No low pressu...

Page 61: ...e system will start checking flow switch status ON OFF 2 If the flow switch ON for 10 seconds the system will check on the water inlet temperature for 10 seconds If the water inlet temperature not exceeds 80 C the water pump shall be continuously running with normal mode If the water inlet temperature exceeds 80 C for continuously 10 seconds the water pump will be OFF immediately 3 After water pum...

Page 62: ...ter Stop Condition a When outdoor set temperature outdoor set temperature 2 C for continuous 15 secs OR b When water out temp water set temperature 2 C for continuous 15 secs OR c Heater switch is Off OR d Heat pump thermo off or OFF condition 2 Force Heater Mode Heater On Condition a After water pump operate 9 mins b When water outlet temperature water set temperature 8 C c 20 minutes since previ...

Page 63: ...erval DELAY TIMER can be set by control panel 12 11 Three Way Valve Control Purpose 3 ways valve is used to change flow direction of hot water from heat pump between heating side and tank side Control contents 1 3 ways valve switch Off During 3 ways valve switch Off time the hot water will provide heat capacity to heating side 2 3 ways valve switch On During 3 ways valve switch On time the hot wat...

Page 64: ...ot When tank connection is NOT set at SETTING mode Solar operation is disabled When Pump A from Solar pump station is detected On through connection Y3 and Y4 then the Solar pump 3 Way Valve is requested ON Refer to figure below 12 14 2 Solar operation control When solar priority is SET 1 Operation condition Solar pump operates if all of the following conditions are fulfilled i Power On regardless...

Page 65: ...OM 1 70 C iv Heat pump thermo OFF in tank mode OR Heat pump operate to room side During Operation ON and tank mode selected 2 Stop condition Solar pump stops operating when í No power supply to unit OR ii There is NO operation request from Solar pump station OR iii Tank hot water temp is above solar off upper limit temp EEPROM 2 77 C iv Heat pump thermo ON and operate to tank side During Operation...

Page 66: ...66 Solar Priority Not Set Heat Tank Mode Heating Priority Set ...

Page 67: ...67 Tank Mode Solar Priority Set Solar Priority Not Set ...

Page 68: ...ivate only when romote thermostat connection select YES by Indoor control panel When indoor running heat mode refer thermo On Off from heating line feedback And when indoor running cool mode refer thermo On Off from cooling line feedback Heat pump Off immediately when receive thermo off feedback Maker Characteristic Siemem REV200 Touch panel Siemem RAA200 Analog Setting L L1 H Heat Thermo L L2 C C...

Page 69: ...ing panel Control contents 1 When indoor running in heat mode OPEN the 2 ways valve 2 When indoor running in cool mode CLOSE the 2 ways valve 3 Stop condition a During stop mode fix 2 ways valve in close condition During pump down mode fix 2 ways valve in close condition During force mode open 2 ways valve Recommended Parts SFA 21 18 Siemens ...

Page 70: ... to 90 C If this condition repeats continuously 3 times within 30 minutes system will stop operation and OFF ON remote control LED will blink F22 error occurs B DC Peak Current Control 1 When the current to IPM exceeds set value of 40 1 5 0 A MDC09 44 7 5 0 A MDC12 MDC14 and MDC16 compres sor will stop Compressor will restart after three minutes 2 If the set value exceeds again for more than 30 se...

Page 71: ...usly After detection When abnormality is detected continue 5 seconds unit stop operation OFF ON remote control LED will blink H64 error occurs 13 1 9 Outside Temperature Current Control 13 1 10 Crank case heater control Purpose For compressor protection during low outdoor ambient operation during heating low temperature operation Control content a Trigger heater START conditon when the outdoor air...

Page 72: ...Air Temperature Control The Compressor operating frequency is regulated in accordance to The outdoor air temperature as shown in The diagram below This control will begin 1 minute after the compressor starts Compressor frequency will adjust base on outdoor air Temperature 13 3 2 Freeze Prevention Control 1 1 When Monobloc unit Water System heat exchanger temperature is lower than 0 C continuously ...

Page 73: ... in case very low ambient temperatures 10 C fully close 3 way valve Liquid side 4 After 3 minutes fully close 3 way valve Gas side 5 Press the OFF ON switch on remote control to stop PUMP DOWN mode 6 Remove the refrigerant piping 14 3 How To Adjust Water Flow Rate Before adjust the water flow rate make sure that the total water volume in the installation is 50 litres minimum The water flow rate ca...

Page 74: ...In case the water keeps drained out from the unit switch off the system and then contact your local authorized dealer Reinstall the cover with tighten the mounting screws properly if the pressure relief valve is functioning normal 3 Monobloc unit control board area Thorough visual inspection of the control board and look for defects i e loose connection melting of wire insulator and etc 4 RCCB Ens...

Page 75: ...order of step a b 7 External water filter field supply Clean the external water filter in regularly basic External water filter is located inside the tube connector which is before water inlet connector of Monobloc unit indicated with WATER IN Refer to figure below Use spanner to detach the tube connector nut Take out the filter carefully so that not deforms it shape Use tap water only to wash the...

Page 76: ...no electrical problems before inspecting the refrigeration cycle Such problems include insufficient insulation problem with the power source malfunction of a compressor and a fan The normal pressure of the refrigeration cycle depends on various conditions the standard values for them are shown in the table on the right ...

Page 77: ...ing Mode Cooling Mode Condition of the Monobloc unit Low Pressure High Pressure Electric current during operation Low Pressure High Pressure Electric current during operation Water leakage or insufficient water flow rate in the system Excessive amount of refrigerant Inefficient compression Insufficient refrigerant gas leakage Monobloc unit Refrigerant System heat exchange deficiency Clogged expans...

Page 78: ...IC memory To check the error code 1 When an abnormality occurs system will stop operation and OFF ON remote control LED will blink 2 Error code of the abnormality will display on the remote control Timer display LCD 3 To determine the abnormality description the Error Code Table needs to be referred To display past last error code 1 Turn ON power supply 2 Press and hold the CHECK button for more t...

Page 79: ...gh pressure sensor Water pump or water leakage Clogged expansion valve or strainer Excess refrigerant Outdoor PCB H99 Indoor heat exchanger freeze prevention Indoor heat exchanger Refrigerant shortage F12 Pressure switch activate 4 times occurrence within 20 minutes Pressure switch F14 Outdoor compressor abnormal revolution 4 times occurrence within 20 minutes Outdoor compressor F15 Outdoor fan mo...

Page 80: ... disconnected F45 Indoor water outlet temperature sensor abnormality Continue for 5 sec Water outlet temperature sensor defective or disconnected F46 Outdoor Current Transformer open circuit Insufficient refrigerant Outdoor PCB Compressor low F95 Cooling high pressure overload protection Outdoor high pressure sensor Water pump or water leakage Clogged expansion valve or strainer Excess refrigerant...

Page 81: ...ration of cooling and heating the capability rank of indoor checked by the outdoor is used to determine connection capability rank abnormality Malfunction Caused 1 Wrong model interconnected 2 Wrong indoor unit or outdoor unit PCB main used 3 Faulty indoor unit or outdoor unit PCB main Abnormality Judgment Continue for 90 seconds ...

Page 82: ...During startup and operation of cooling and heating the temperatures detected by the compressor tank temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 83: ... During startup and operation of cooling and heating the temperatures detected by the indoor refrigerant liquid temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty indoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 84: ...ove 26 C is detected by the outdoor pipe temperature sensor Malfunction Caused 1 Dust accumulation on the outdoor unit heat exchanger 2 Air short circuit at outdoor unit 3 2 way valve partially closed 4 Faulty outdoor unit fan motor 5 Refrigerant shortage refrigerant leakage 6 Clogged expansion valve or strainer 7 Faulty outdoor pipe temperature sensor 8 Faulty outdoor unit main PCB main ...

Page 85: ...etected by the indoor water flow switch is used to determine water flow error Malfunction Caused 1 Faulty water pump 2 Water leak in system 3 Faulty connector connection 4 Faulty water flow switch 5 Faulty indoor unit PCB main Abnormality Judgment Continue for 10 seconds but no judgment for 9 minutes after compressor startup restart ...

Page 86: ...n Conditions During operation of cooling and heating when the outdoor high pressure sensor output signal is 0Vdc or 5Vdc Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue 4 times in 20 minutes ...

Page 87: ...ndoor backup heater when no power supplies to indoor backup heater or OLP open circuit Malfunction Caused 1 Faulty power supply connector connection 2 Faulty connector connection 3 Faulty indoor backup heater overload protector OLP 4 Faulty indoor unit PCB main Abnormality Judgment Continue for 60 seconds ...

Page 88: ...onditions When tank connection is set to ON the temperatures detected by the tank temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty indoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 89: ...ation Abnormality H76 Malfunction Decision Conditions During standby and operation of cooling and heating indoor remote control error occur Malfunction Caused 1 Faulty connector connection 2 Faulty remote control 3 Faulty indoor unit PCB main ...

Page 90: ...s normal Malfunction Caused 1 Faulty outdoor unit PCB main 2 Faulty indoor unit PCB main 3 Indoor outdoor signal transmission error due to wrong wiring 4 Indoor outdoor signal transmission error due to breaking of wire in the connection wires between the indoor and outdoor units 5 Indoor outdoor signal transmission error due to disturbed power supply waveform Abnormality Judgment Continue for 1 mi...

Page 91: ...on Conditions During operation of tank booster heater and tank booster heater OLP open circuit Malfunction Caused 1 Faulty connector connection 2 Faulty tank booster heater overload protector OLP 3 Faulty indoor unit PCB main Abnormality Judgment Continue for 60 seconds ...

Page 92: ...tween Indoor and Outdoor H95 Malfunction Decision Conditions The supply power is detected for its requirement by the indoor outdoor transmission Malfunction Caused 1 Insufficient power supply 2 Faulty outdoor unit PCB noise filter main ...

Page 93: ...ssure 4 0MPa and above is detected by outdoor high pressure sensor Malfunction Caused 1 Faulty water pump 2 Insufficient water flow rate in system 3 Water leak in system 4 2 3 way closed 5 Clogged expansion valve or strainer 6 Excessive refrigerant 7 Faulty outdoor high pressure sensor 8 Faulty outdoor unit PCB main ...

Page 94: ...door refrigerant liquid temperature 0 C Malfunction Caused 1 Faulty water pump 2 Insufficient water flow rate in system 3 Water leak in system 4 2 way valve partially closed 5 Clogged expansion valve or strainer 6 Refrigerant shortage refrigerant leakage 7 Faulty indoor refrigerant liquid temperature sensor 8 Faulty indoor unit PCB main ...

Page 95: ...lfunction Caused 1 Dust accumulation on the outdoor unit heat exchanger 2 Air short circuit at outdoor unit 3 Faulty water pump 4 Insufficient water flow rate in system 5 Water leak in system 6 2 3 way valve closed 7 Clogged expansion valve or strainer 8 Excessive refrigerant 9 Faulty outdoor high pressure sensor and switch 10 Faulty outdoor unit PCB Abnormality Judgment Continue 4 times in 20 min...

Page 96: ...compressor rotation failure is detected by checking the compressor running condition through the position detection circuit Malfunction Caused 1 Compressor terminal disconnect 2 Faulty outdoor unit PCB main 3 Faulty compressor Abnormality Judgment Continue 4 times in 20 minutes ...

Page 97: ... fan motor feedback of rotation 2550rpm or 50rpm Malfunction Caused 1 Operation stop due to short circuit inside the fan motor winding 2 Operation stop due to breaking of wire inside the fan motor 3 Operation stop due to breaking of fan motor lead wires 4 Operation stop due to fan motor Hall IC malfunction 5 Operation error due to faulty outdoor unit PCB Abnormality Judgment Continue 2 times in 30...

Page 98: ...itions During operation of cooling and heating when outdoor current above 27 9A is detected by the current transformer CT in the outdoor unit PCB Malfunction Caused 1 Excessive refrigerant 2 Faulty outdoor unit PCB main Abnormality Judgment Continue 3 times in 20 minutes ...

Page 99: ...ve 112 C is detected by the compressor tank temperature sensor Malfunction Caused 1 Faulty compressor tank temperature sensor 2 2 3 way valve closed 3 Refrigerant shortage refrigerant leakage 4 Clogged expansion valve or strainer 5 Faulty outdoor unit PCB main 6 Faulty compressor Abnormality Judgment Continue 4 times in 30 minutes ...

Page 100: ...onditions During operation of cooling and heating when temperature 95 C is detected by the outdoor IPM temperature sensor Malfunction Caused 1 Faulty outdoor unit fan motor 2 Faulty outdoor unit PCB main Abnormality Judgment Continue 3 times in 30 minutes ...

Page 101: ...of cooling and heating when outdoor DC current is above 40 1 5 0A for UD07 09CE OR 44 7 5 0A for UD12 16CE is detected by the IPM DC Peak sensing circuitry in the outdoor unit PCB main Malfunction Caused 1 Faulty outdoor unit PCB main 2 Faulty compressor Abnormality Judgment Continue for 7 times ...

Page 102: ...let temperature indoor refrigerant liquid temperature 5 C 4 During operation of heating indoor refrigerant liquid temperature water inlet temperature 5 C Malfunction Caused 1 Faulty water inlet or indoor refrigerant liquid temperature sensors 2 2 3 way valve closed 3 Refrigerant shortage refrigerant leakage 4 Clogged expansion valve or strainer 5 Faulty outdoor unit PCB main 6 Poor compression of ...

Page 103: ... temperature of thermostat ON indoor unit 0 C 2 During cooling operation when the indoor pipe temperature of thermostat ON indoor unit 45 C Malfunction Caused 1 Faulty sensor 2 Faulty connector connection 3 Faulty outdoor unit PCB noise filter main 4 Faulty four way valve Abnormality Judgment Continue 4 times in 30 minutes ...

Page 104: ...l F27 Malfunction Decision Conditions During compressor stop and outdoor high pressure switch is remain opened Malfunction Caused 1 Faulty connector connection 2 Faulty switch 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 1 minute ...

Page 105: ... During startup and operation of cooling and heating the temperatures detected by the outdoor air temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 106: ...s During startup and operation of cooling and heating the temperatures detected by the indoor water inlet temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty indoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 107: ... During startup and operation of cooling and heating the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 108: ...ng operation of cooling and heating when the PFC protection circuitry in the outdoor unit PCB main senses abnormal high DC voltage level Malfunction Caused 1 Power supply surge 2 Compressor windings not uniform 3 Faulty outdoor unit PCB main Abnormality Judgment Continue 4 times in 10 minutes ...

Page 109: ... During startup and operation of cooling and heating the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 110: ... During startup and operation of cooling and heating the temperatures detected by the outdoor defrost temperature sensor are used to determine sensor error Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty outdoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 111: ... During startup and operation of cooling and heating the temperatures detected by the indoor water outlet temperature sensor are used to determine sensor errors Malfunction Caused 1 Faulty connector connection 2 Faulty sensor 3 Faulty indoor unit PCB main Abnormality Judgment Continue for 5 seconds ...

Page 112: ...r CT open circuit is detected by checking the compressor running frequency rated frequency and CT detected input current 0 65A for continuously 20 seconds Malfunction Caused 1 CT defective 2 Faulty outdoor unit PCB main 3 Compressor defective low compression Abnormality Judgment Continue 3 times in 20 minutes ...

Page 113: ... above is detected by outdoor high pressure sensor Malfunction Caused 1 Dust accumulation in the outdoor unit heat exchanger 2 Air short circuit at outdoor unit 3 2 way valve closed 4 Faulty outdoor unit fan motor 5 Clogged expansion valve or strainer 6 Excessive refrigerant 7 Faulty outdoor high pressure sensor 8 Faulty outdoor unit PCB main ...

Page 114: ...WARNING High Voltage are generated in the electrical parts area by the capacitor Ensure that the capacitor has discharged sufficiently before proceeding with repair work Failure to heed this caution may result in electric shocks WARNING Be sure to switch off all the power supply before performing each of the below action ...

Page 115: ...115 17 3 To Remove The Cabinet Rear Plate 17 4 To Remove Pressure Gauge 17 5 To Remove RCCB ...

Page 116: ...116 17 6 To Remove Transformer and Electronic Controller Board 17 7 To Remove Pressure Relief Valve When reinstall the water pipe use grease or water at the joining ...

Page 117: ...117 17 8 To Remove Flow Switch When reinstall the water pipe use grease or water at the joining 17 9 To Remove Water Pump When reinstall the water pipe use grease or water at the joining ...

Page 118: ...118 17 10 To Remove Bottle Complete When reinstall the water pipe use grease or water at the joining ...

Page 119: ...Operation Characteristics 18 1 1 WH MDC09C3E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 7 C DBT 6 C WBT Indoor water inlet temperature 30 C Indoor water outlet temperature 35 C ...

Page 120: ...120 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 35 C DBT C WBT Indoor water inlet temperature 12 C Indoor water outlet temperature 7 C ...

Page 121: ... 18 1 2 WH MDC12C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 7 C DBT 6 C WBT Indoor water inlet temperature 30 C Indoor water outlet temperature 35 C ...

Page 122: ...122 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 35 C DBT C WBT Indoor water inlet temperature 12 C Indoor water outlet temperature 7 C ...

Page 123: ... 18 1 3 WH MDC14C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 7 C DBT 6 C WBT Indoor water inlet temperature 30 C Indoor water outlet temperature 35 C ...

Page 124: ...124 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 35 C DBT C WBT Indoor water inlet temperature 12 C Indoor water outlet temperature 7 C ...

Page 125: ... 18 1 4 WH MDC16C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 7 C DBT 6 C WBT Indoor water inlet temperature 30 C Indoor water outlet temperature 35 C ...

Page 126: ...126 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature 35 C DBT C WBT Indoor water inlet temperature 12 C Indoor water outlet temperature 7 C ...

Page 127: ...9 7 00 4 20 7 10 40 3 41 10 00 3 70 9 60 3 90 9 20 4 10 8 70 4 20 8 20 4 31 2 11 80 3 14 11 40 3 34 11 00 3 57 10 60 3 78 9 80 3 98 9 10 4 18 7 12 00 2 14 12 00 2 57 12 00 3 00 12 00 3 43 12 00 3 82 12 00 4 20 25 12 00 1 42 12 00 1 70 11 80 1 98 11 70 2 27 11 50 2 53 11 40 2 78 HC Heating Capacity kW IP Power Input kW LWC Leaving Water Condenser Temperature C Tamb Ambient Temperature C LWC 30 35 4...

Page 128: ...5 45 25 16 00 2 35 16 00 2 73 16 00 3 11 16 00 3 49 16 00 3 71 15 90 3 93 HC Heating Capacity kW IP Power Input kW LWC Leaving Water Condenser Temperature C Tamb Ambient Temperature C MODELS WH MDC09 WH MDC12 WH MDC14 WH MDC16 IWC 12 12 12 12 LWC 7 7 7 7 Tamb TC IP TC IP TC IP TC IP 16 5 90 1 01 7 65 1 30 8 85 1 50 9 62 1 63 25 7 45 1 59 9 20 2 30 10 00 2 68 10 51 2 85 35 7 00 2 25 10 00 3 60 11 5...

Page 129: ...129 19 Exploded View and Replacement Parts List 19 1 WH MDC09C3E5 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 Refrigerant System ...

Page 130: ...130 ...

Page 131: ...131 Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Page 132: ... 27 SENSOR COMP TOP 1 CWA50C2629 27a SENSOR COMP DEF 1 CWA50C2577 28 CABINET REAR PLATE 1 CWE02K1019A 29 CONTROL BOARD CASING 1 CWH10K1049 31 TERMINAL BOARD ASS Y 1 CWA28K1213 36 ELECTRONIC CONTROLLER CAPACITOR 1 CWA746169 O 38 ELECTRONIC CONTROLLER NOISE FILTER 1 CWA745446 O 44 ELECTRONIC CONTROLLER MAIN 1 CWA73C4888R CWA73C4890R CWA73C4892R CWA73C4894R O 46 REACTOR 2 G0C592J00004 48 TERMINAL COV...

Page 133: ... Code 00029488 O marked parts are recommended to be kept in stock 72 ELECTRO MAGNETIC SWITCH 1 K6C1AYY00003 73 RECEIVER 1 CWB141055 75 ACCESSORY CO DRAIN ELBOW 1 CWG87C2030 REF NO DESCRIPTION NAME QTY WH MDC09C3E5 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 REMARKS ...

Page 134: ...134 19 2 WH MDC09C3E5 WH MDC12C6E5 WH MDC14C6E5 WH MDC16C6E5 Water System ...

Page 135: ...135 Note The above exploded view is for the purpose of parts disassembly and replacement The non numbered parts are not kept as standard service parts ...

Page 136: ...C CONTROLLER MAIN 1 CWA73C4889R CWA73C4891R CWA73C4893R CWA73C4895R O 21 TERMINAL BOARD ASS Y 1 CWA28K1200 25 TERMINAL BOARD ASS Y 1 CWA28K1211 26 TERMINAL BOARD ASS Y 1 CWA28K1221 27 ELECTRO MAGNETIC SWITCH 1 K6C1AYY00004 O 28 TERMINAL BOARD ASS Y 1 CWA28K1222 29 RESIDUAL CURRENT CIRCUIT BREAKER 2 3 CWA181005 O 30 TRANSFORMER COMPLETE 1 CWA40C1075 O 31 SENSOR COMPLETE 1 CWA50C2749 O 32 REMOTE CON...

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