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Daikin EHYHBH05AAV3, Service Manual

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Daikin EHYHBH05AAV3 Service Manual Download Page 162

Additional Checks for Troubleshooting

ESIE13-02A

Part 4 – Troubleshooting

162

3

1

4

5

6.12

Check No.14 - Check for Excessive Refrigerant Charging

As criteria for judging whether refrigerant is excessively charged or not, refer to the following operating 
conditions.

<Diagnosis of excessive refrigerant charging>

In cooling operation

1

Because high pressure rises due to excessive charging, overload control is carried out and 
capacity tends to run short.

2

Considering pressure load, compressor discharge pipe temperature is low.   

3

Subcooled degree of condensate liquid becomes large. Therefore, temperature of blown air 
passing through subcooled part decreases in heating operation.

Summary of Contents for EHYHBH05AAV3

Page 1: ...boiler EHYKOMB33AA EHYKOMB33AA Hydro box EHYHBH05AAV3 RHYHBH05AAV3 CHYHBH05AAV3 EHYHBH08AAV3 RHYHBH08AAV3 CHYHBH08AAV3 EHYHBX08AAV3 RHYHBX08AAV3 Outdoor unit EVLQ05CAV3 RVLQ05CAV3 EVLQ08CAV3 RVLQ08CAV...

Page 2: ...Part 1 System Outline 1 Description 1 1 System Build up 18 1 2 Components and Connections 19 2 Functionality 2 1 System Operation 22 3 Wiring Diagrams 3 1 PCB Description 32 3 2 Overview Switch Box 3...

Page 3: ...1 7 Overview of the Outdoor Safety Devices 83 1 8 Overview of the Hydro box Safety Devices 84 2 Error Codes Gas Condensing Boiler 2 1 General Guidelines 85 2 2 Solving Problems Based on Symptoms 86 2...

Page 4: ...Gas Shortage Malfunction 139 5 2 U2 Abnormal Power Supply Voltage 141 5 3 U3 Underfloor Heating Screed Dry out Failure 143 5 4 U4 Malfunction of Transmission between Hydro box and Outdoor Unit 144 5...

Page 5: ...ESIE13 02A 5 Table of Contents 3 4 5 1 Part 5 Repair 1 Tips and Tricks Part 6 Maintenance 1 Maintenance Schedule 1 1 Maintenance 168...

Page 6: ...an introduction and six parts Note Version code Description Date ESIE13 02A Manual also applicable for CHYHBH05 08AAV3 04 04 2017 Part See page Part 1 System Outline 17 Part 2 Specifications 41 Part 3...

Page 7: ...cm135 29 0662 general safety pre cautions x x x 4PEN349695 1_tcm135 290651 installation in a nut shell x x x 4PEN349587 1A_2013_05_tcm135 2 90364 installation manual x 4PEN353067 1_2013_07_tcm135 29 0...

Page 8: ...t could result in electrocution DANGER RISK OF BURNING Indicates a situation that could result in burning because of extreme hot or cold tem peratures WARNING Indicates a situation that could result i...

Page 9: ...egislation Units must be treated at a specialized treatment facility for reuse recycling and recovery By ensuring this product is disposed of correctly you will help to prevent potential negative cons...

Page 10: ...or approved by Daikin WARNING Make sure installation testing and applied materials comply with applicable legisla tion on top of the instructions described in the Daikin documentation CAUTION Wear ad...

Page 11: ...es where there is a risk of fire due to the leakage of flammable gases example thinner or gasoline carbon fibre ignitable dust In places where corrosive gas example sulphurous acid gas is produced Cor...

Page 12: ...have a high total hardness 3 mmol l sum of the calcium and magnesium concentrations calculated as calcium carbonate Using filling water and top up water which does NOT meet the stated quality requirem...

Page 13: ...condition shall be installed in the fixed wiring WARNING ONLY use copper wires All field wiring must be performed in accordance with the wiring diagram supplied with the product NEVER squeeze bundled...

Page 14: ...e meter or regulator and pipe work to the meter MUST be checked preferably by the gas supplier This is to ensure that the equipment works good and meets the gas flow and pressure requirements 1 5 8 Ga...

Page 15: ...Flues and Ventilation for gas appliances of rated input NOT exceeding 70 kW Part 1 Flues BS 5440 Flues and Ventilation for gas appliances of rated input NOT exceeding 70 kW Part 2 Air Supply BS 5546 2...

Page 16: ...Introduction ESIE13 02A 16 3 1 4 5...

Page 17: ...IE13 02A 17 Part 1 System Outline 4 3 4 5 1 Part 1 System Outline What is in this part This part contains the following chapters Chapter See page 1 Description 18 2 Functionality 22 3 Wiring Diagrams...

Page 18: ...and a heat pump hydro box for space heating and domestic hot water Depending on the position of the 3 way valve the gas condensing boiler can either be bypassed or not The heat pump can either operat...

Page 19: ...use ONLY in combination with the accompanying elbow in flue sets c Sensor S1 m Connection block terminal strip X4 d Sensor S2 n Condensate drain pan e Fan o Hot water sensor S3 f Flow sensor p Condens...

Page 20: ...ESIE13 02A Part 1 System Outline 20 3 1 1 4 5 1 2 2 Hydro box Item Description a Gas in b Cold water in c Refrigerant gas connection d Refrigerant liquid connection e Heating return f Heating flow g H...

Page 21: ...ESIE13 02A Description 21 Part 1 System Outline 3 1 4 5 1 2 3 Outdoor unit Item Description a Terminal strip with earth terminal b Gas stop valve 15 9 CuT c Service port d Liquid stop valve 6 4 CuT...

Page 22: ...eration 2 1 1 Heating Mode Heat pump only operation The heat pump and pump are enabled the gas boiler is bypassed Space heating is enabled Allowable outdoor temperature range 25 to 25 C a Outdoor unit...

Page 23: ...SIE13 02A Functionality 23 Part 1 System Outline 3 1 4 5 SP 2 SP 1 SP SP 1 SP 2 0 1 0 1 Time HEATPUMP MODE heatpump operation boiler operation at highest setpoint set in weather dependent Quick heatup...

Page 24: ...1 1 4 5 Hybrid operation mode The heat pump pump and gas boiler are enabled Space heating is enabled Allowable outdoor temperature range 25 to 25 C a Outdoor unit b Indoor unit c Plate heat exchanger...

Page 25: ...ESIE13 02A Functionality 25 Part 1 System Outline 3 1 4 5 SP 2 SP 1 SP SP 1 SP 2 0 1 0 1 Time HYBRID MODE heatpump operation boiler operation room temperature...

Page 26: ...enabled It works alternating depending on the demand of domestic hot water If there is a domestic hot water demand the unit stops serving the heating and turns in domestic hot water mode Allowable out...

Page 27: ...estic hot water only mode The heat pump and the pump are idle the gas boiler is enabled Space heating is disabled It works alternating depending on the demand of domestic hot water a Outdoor unit b In...

Page 28: ...on demand Both can happen parallel During hybrid operation the system will automatically switch one or both units to ON for heating accordantly to the settings in ecological economical domestic hot w...

Page 29: ...ESIE13 02A Functionality 29 Part 1 System Outline 3 1 4 5...

Page 30: ...Functionality ESIE13 02A Part 1 System Outline 30 3 1 1 4 5...

Page 31: ...ixed value independent of flow temperature return temperature and ambient temperature The energy prices are set by the user or installer and can be adjusted Ecologic When the heat pump operates at the...

Page 32: ...er controller e Fuse 3 15 A T f Gas valve and ignition unit g Ionisation ignition probe h Main voltage i Fan S1 Flow sensor S2 Return sensor S3 Domestic hot water sensor S5 Flow switch S7 Space heatin...

Page 33: ...ESIE13 02A Wiring Diagrams 33 Part 1 System Outline 3 1 4 5 3 1 2 External connection diagram For more details check unit wiring diagram...

Page 34: ...S3S shown on PCB PART 1 fulfil the following functions S1S Preferential kWh rate can force the outdoor heat pump to switch off S2S Electric power meter pulse input for the purpose of energy metering...

Page 35: ...ESIE13 02A Wiring Diagrams 35 Part 1 System Outline 3 1 4 5...

Page 36: ...Wiring Diagrams ESIE13 02A Part 1 System Outline 36 3 1 1 4 5...

Page 37: ...mestic hot water pump M2S 2 way valve for cooling mode M3S 3 way valve for floor heating domestic hot water tank M4S Bypass valve gas boiler PHC1 Optocoupler input circuit PS Switching power supply Q...

Page 38: ...Wiring Diagrams ESIE13 02A Part 1 System Outline 38 3 1 1 4 5 3 3 Cable Dimensions...

Page 39: ...ESIE13 02A Wiring Diagrams 39 Part 1 System Outline 3 1 4 5...

Page 40: ...heating water out 3 Shut off valve with drain fill valve field installation 4 Expansion vessel 5 Filter 6 Pump 7 Plate heat exchanger 8 Air purge 9 Flow sensor 10 3 way valve 11 Safety valve 12 Boile...

Page 41: ...13 02A 41 Part 2 Specifications 4 3 4 5 2 Part 2 Specifications What is in this part This part contains the following chapters Chapter See page 1 Gas Condensing Boiler 42 2 Hydro box 44 3 Outdoor Unit...

Page 42: ...CH Min Max 80 60 kW 7 9 31 9 Efficiency CH NCV 80 60 98 Efficiency CH NCV 40 30 30 107 Heating power DHW Min Max kW 7 9 31 9 Efficiency DHW NCV 105 Casing Colour RAL9010 Dimensions Unit Height x widt...

Page 43: ...setting L and 2x with opened casing 8 6 9 6 9 8 10 8 Gas supply pressure mBar 20 30 25 35 gas metering ring mm HRE36 30 6 95 5 25 Minimum rpm of max parameter d 25 40 Minimum start rpm of max paramet...

Page 44: ...exchanger Type Brazed plate Qty 1 Water volume l 0 9 1 3 Water flow rate min l min 5 0 11 0 Insulation material Green felt Green felt Elastomeric foam Expansion vessel Volume l 10 Max water pressure b...

Page 45: ...o box 45 Part 2 Specifications 4 3 4 5 2 Operation range heat pump oper ation Outdoor tempera ture Space cooling C 10 43 Space heating heat pump C 25 25 Water tempera ture Space cooling C 5 22 Space h...

Page 46: ...r units Condition 1 Indoor H P module EHYHBH05 EHYHBH08 EHYHBX08 Heating capacity Minimum kW 1 80 1 80 1 80 Nominal kW 4 40 7 40 7 40 Maximum kW 5 12 10 02 10 02 Cooling capacity Minimum kW 2 50 Nomin...

Page 47: ...weight ERLQ004 ERLQ006 ERLQ008 kg 57 59 Packing Material EPS CARTON Weight kg 3 Heat exchanger Specifications Length mm 845 N of rows 2 Fin pitch mm 1 8 N of stages 32 Tube type Hi Xa 8 Fin Type WF f...

Page 48: ...lve electronic type N of circuits 1 Refrigerant oil Type FVC50K Charged volume l 0 75 Piping connec tions Liquid Type Flare connection Diameter OD mm 6 35 Gas Type Flare connection Diameter OD mm 15 9...

Page 49: ...ase by support backup heater Range increase by support booster heater or backup heater 2 The sound pressure level is measured via a microphone at a certain distance from the unit It is a relative valu...

Page 50: ...Outdoor Unit ESIE13 02A Part 2 Specifications 50 3 1 2 5...

Page 51: ...ESIE13 02A 51 Part 3 Commissioning 4 3 4 5 3 Part 3 Commissioning See Note on page 6...

Page 52: ...ESIE13 02A Part 3 Commissioning 52 3 1 3 5...

Page 53: ...is in this part This part contains the following chapters Chapter See page 1 Troubleshooting 54 2 Error Codes Gas Condensing Boiler 85 3 Error Codes Hydro box 94 4 Error Codes Outdoor Units 103 5 Erro...

Page 54: ...Troubleshooting ESIE13 02A Part 4 Troubleshooting 54 3 1 4 5 1 Troubleshooting 1 1 General Troubleshooting Flowchart...

Page 55: ...button the error code and a brief description of the error will be shown A short list of all errors and corrective actions can be found in the installer reference guide More detailed information on ho...

Page 56: ...ct point Faulty high pressure switch Faulty magnetic switch for fan motor Activation or fault of overcurrent relay for fan motor Faulty overcurrent relay for compressor Faulty compressor protection th...

Page 57: ...t Compressor does not Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes Faulty thermistor Faulty indoor outdoor unit PC board Faulty magnetic s...

Page 58: ...Troubleshooting ESIE13 02A Part 4 Troubleshooting 58 3 1 4 5 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 59: ...ondition Supposed causes Excess charge of refrigerant Air intrudes into refrigerant system Faulty pressure switch Faulty magnetic switch for outdoor unit fan motor Faulty aux relay for outdoor unit fa...

Page 60: ...Troubleshooting ESIE13 02A Part 4 Troubleshooting 60 3 1 4 5 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 61: ...tion thermostat Overcurrent relay may act due to the following reasons Lower voltage of power supply Excess level of high pressure Insufficient size of power cable Malfunction of compressor Compressor...

Page 62: ...Troubleshooting ESIE13 02A Part 4 Troubleshooting 62 3 1 4 5 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 63: ...Produces Loud Noise or Shakes Applicable model ERHQ011 016 ERLQ004 016 Error detection method Error generating condition Supposed causes Faulty installation Excess charge of refrigerant Air intrudes i...

Page 64: ...Troubleshooting ESIE13 02A Part 4 Troubleshooting 64 3 1 4 5 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 65: ...4 5 4 1 2 6 User Interface Displays Applicable model EHB V CA Error detection method Error generating condition Supposed causes Troubleshooting Caution Be sure to turn off power switch before connect...

Page 66: ...Check that all shut off valves of the water circuit are completely open Check if the water filter needs cleaning Make sure there is no air in the system purge air Check on the manometer that there is...

Page 67: ...start up out of its operation range the water temperature is too low In case of low water temperature the system uti lizes the backup heater to reach the minimum water temperature first 18 C Check tha...

Page 68: ...on There is air in the system Purge air Water pressure at pump inlet is too low Check on the manometer on the unit that there is sufficient water pressure The water pressure must be 1 5 bar Check that...

Page 69: ...etection method Error generating condition Supposed causes corrective action Possible causes Corrective action The expansion vessel is broken Replace the expansion vessel The water volume in the insta...

Page 70: ...Possible causes Corrective action Dirt is blocking the water pressure relief valve outlet Check for correct operation of the pressure relief valve by turning the red knob on the valve coun ter clockwi...

Page 71: ...creen is not visible Check if there is a tank connected Then setting A 2 2 1 should be set to yes The RT screen is not visible Check setting A 2 1 to see if unit control method is set to Room Thermost...

Page 72: ...01 and domestic hot water shall be covered supported by the electrical heater To guarantee sufficient domestic hot water and reasonable domestic hot water heat up times 2 The applicable Ta can be dete...

Page 73: ...eating operation at low Ta equilibrium temperature status backup heater allowance 5 00 and equilib rium temperature 5 01 are not set or not opti mized according to the site application 1 Optimize the...

Page 74: ...on the average heat emitter surface temperature The average heat emitter surface temperature is determined by the temperature difference between the inlet and outlet water temperature of the heat emi...

Page 75: ...nction code plus a short description of the error is displayed when pushing the t button on the user interface In case of a warning the unit will continue operation In case of an error the unit will p...

Page 76: ...Manual Reset in the Memory Explanation In order to reset the malfunction code in the remote controller memory follow actions has to be performed Remark For some malfunction codes it s required to man...

Page 77: ...an motor lock or outdoor fan instantaneous overcurrent malfunction E9 Malfunction of electronic expansion valve outdoor unit F3 Discharge pipe temperature malfunction outdoor unit H3 Failure of high p...

Page 78: ...utdoor unit or Gas shortage Transmission between hydro box and outdoor unit is not being carried out correctly or There is very little or no refrigerant flow within the hydro box U5 Failure of transmi...

Page 79: ...eration halts due to malfunction depending on the model or condition 2 Troubleshoot by turning off the power supply for a minimum of 5 seconds turning it back on and then rechecking the LED display Mi...

Page 80: ...80 Return water temperature thermistor abnormality 96 81 Leaving water temperature thermistor abnormality 96 89 PHE freeze up protection control 95 7H Water flow abnormality 97 AH Tank disinfection f...

Page 81: ...sensor system 121 J1 Malfunction of pressure sensor 122 J3 Malfunction of discharge pipe temperature sensor system 121 J5 Suction pipe thermistor malfunction 121 J6 Malfunction of heat exchanger tempe...

Page 82: ...nce Page U0 Gas shortage 139 U2 Abnormal power supply voltage 141 U3 Underfloor heating screed dry out error 143 U4 or UF Transmission error between hydro box and outdoor unit 1 144 UF Malfunction of...

Page 83: ...eshooting 83 Part 4 Troubleshooting 4 3 4 5 4 1 7 Overview of the Outdoor Safety Devices High pressure switch Fuse Open Close ERHQ011 016BA 4 0 MPa 0 0 15 3 0 0 15 6 3A 250V ERLQ CA 4 17 MPa 0 0 15 3...

Page 84: ...11l min in hp operation If 3V BUH min 12l min If 9W BUH min 15l min AD120120 Protector Clixon Cut out condition Reference EKSWW Q2L 85 C 3 C 4SW03476 1 EKSWWU Q2L 85 C 3 C 4SW03476 1 Q3L 85 C 3 C EKH...

Page 85: ...the mains Turn off the respective circuit breaker When a safety device was activated stop the unit and find out why the safety device was activated before resetting it NEVER bridge safety devices or c...

Page 86: ...Error Codes Gas Condensing Boiler ESIE13 02A Part 4 Troubleshooting 86 3 1 4 5 2 2 Solving Problems Based on Symptoms Not available at this moment...

Page 87: ...nd indicates them on the display by error codes If the LED is flashing the controller has detected a problem Once the problem is rectified the controller can be restarted by pressing the f button Foll...

Page 88: ...t of gas valve 6 Flame detection fault Replace ignition cable and spark plug cap Replace ignition unit Replace boiler controller 8 Incorrect fan speed Fan catching on casing Wiring between fan and cas...

Page 89: ...ESIE13 02A Error Codes Gas Condensing Boiler 89 Part 4 Troubleshooting 4 3 4 5 4 2 4 Symptoms 2 4 1 Burner does not ignite...

Page 90: ...Error Codes Gas Condensing Boiler ESIE13 02A Part 4 Troubleshooting 90 3 1 4 5 2 4 2 Burner ignites noisily 2 4 3 Burner resonating...

Page 91: ...cable is properly installed Incorrect heat pump settings Check the settings in the heat pump manual The service display displays _ the gas boiler is switched off Switch on the gas boiler with f No cu...

Page 92: ...sary Temperature is too low Increase the space heating temperature No circulation in the installation Check whether there is circulation At least 2 or 3 radiators MUST be open The boiler power has NOT...

Page 93: ...high Adjust the inlet assembly Temperature setting for water circuit is too low Set the hot water circuit on the heat pump user interface depending on the desired tempera ture No heat transfer as a r...

Page 94: ...nly Memory A memory chip that holds its content without power It can be erased either within the computer or externally and usually requires more voltage for erasure than the common 5 volts used in lo...

Page 95: ...x heat exchanger thermistor Malfunction decision conditions Freeze up protection When the hydro box heat exchanger temperature is below 0 C during cooling operation Supposed causes Detection error due...

Page 96: ...more than 4 96 V or less than 0 04 V during compressor operation reference When above about 212 C less than 120 ohms or below about 50 C more than 1 860 kOhms Note The values vary slightly in some mo...

Page 97: ...nds Supposed causes Closed shut off valve Air in the system Clogged water filter Insufficient water pressure Too high external static pressure pump speed setting Malfunction of hydro box pump Hydro bo...

Page 98: ...Error Codes Hydro box ESIE13 02A Part 4 Troubleshooting 98 3 1 4 5 Troubleshooting...

Page 99: ...completely several pump restarts can be required 3 Check the installation manual for the minimum required water pressure in the system 4 Check the installation manual for the external static pressure...

Page 100: ...low input signal during pump stop operation Malfunction decision conditions The error is generated in case flow input signal during pump stop operation occurs Supposed causes Malfunction of the flow s...

Page 101: ...function of the domestic hot water tank thermistor R5T Incorrect parameters on the solar pump station Troubleshooting 1 Confirm the maximum allowed tank temperature via solar panels in the installatio...

Page 102: ...and timer check Malfunction decision conditions The error is generated when disinfection function is not completed correctly Either tank temperature for disinfection A 4 4 4 is not reached or temperat...

Page 103: ...Faulty outdoor unit PCB Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Turn the power supply off once and then back on...

Page 104: ...n the high pressure switch is actuated Actuating pressure Supposed causes Faulty high pressure switch Disconnection in high pressure switch harness Faulty connection of high pressure switch connector...

Page 105: ...HPS Correct the high pressure Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 Replace the high pressure switch HPS NO YES Connect correctly Are...

Page 106: ...function decision conditions In cooling When the detection pressure is the following value 0 12 MPa or less continues for 5 minutes When the saturated pressure equivalent to the detection temperature...

Page 107: ...Error Codes Outdoor Units 107 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting See also Check No 7 Evaluation of Abnormal Low Pressure on page 157 Check No 11 Outdoor Unit Check for Power Transistor o...

Page 108: ...Error Codes Outdoor Units ESIE13 02A Part 4 Troubleshooting 108 3 1 4 5 Graphs Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 109: ...d compressor and detects the position signal pattern Malfunction decision conditions The position signal with 3 times cycle as imposed frequency is detected when compressor motor operates normally but...

Page 110: ...YES NO NO Is high pressure higher than 2 6 MPa at starting YES NO Check and see whether compressor is short circuited or ground YES Are inverter output voltages the same for 3 phases Does low or high...

Page 111: ...on decision conditions When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor running conditions are met When connector detecting fan speed is disconnected Wh...

Page 112: ...Error Codes Outdoor Units ESIE13 02A Part 4 Troubleshooting 112 3 1 4 5 Troubleshooting See also Check No 10 Outdoor Unit Fan Speed Pulse on page 159...

Page 113: ...external factor noise etc other than unit failure may be a cause of the malfunction Properly plug the fan motor connector and then turn ON the power again Is the fan motor normal NO YES Is the fuse c...

Page 114: ...emperature thermistor Malfunction decision conditions When the following conditions are met for 10 minutes Suction pipe superheat degree 4 C Minimum electronic expansion valve opening degree Connector...

Page 115: ...ESIE13 02A Error Codes Outdoor Units 115 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting...

Page 116: ...t operation Refer to Check 13 14 15 to eliminate the causes of wet operation It is believed that factors noise etc other than failure caused the malfunction Replace the outdoor PC board A1P ERHQ V3 ER...

Page 117: ...ding to the temperature detected by the discharge pipe temperature sensor Malfunction decision conditions When the discharge pipe temperature rises to an abnormally high level When the discharge pipe...

Page 118: ...al Is the discharge pipe thermistor correctly connected to PCB A1P Is the discharge pipe temperature high 115 C Is the discharge pipe thermistor attached to the discharge pipe Abnormality in refrigera...

Page 119: ...device circuit checks continuity in the high pressure switch Malfunction decision conditions When there is no continuity in the high pressure switch during compressor stops operating Supposed causes...

Page 120: ...rating then check the following Connect correctly Replace the lead wire Replace the outdoor unit PC board A1P ERHQ V3 ERLQ V3 Replace the inverter PC board A2P ERHQ W1 ERLQ W1 Is there continuity in e...

Page 121: ...o 4 Resistance Conversion Table Ambient Coil Fin on page 153 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES YES NO Check connectors...

Page 122: ...ure 0 05MPa continues 185 s Supposed causes Faulty pressure sensor Faulty outdoor unit PC board Incorrect connection of connector Troubleshooting Is the relation between the pressure and the voltage n...

Page 123: ...ESIE13 02A Error Codes Outdoor Units 123 Part 4 Troubleshooting 4 3 4 5 4 Graphs Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 124: ...eration at the time of startup Detect malfunctions using an MP PAM series capacitor overvoltage sensor Malfunction decision conditions When over current is detected at the time of waveform output befo...

Page 125: ...the fan motor Is the power supply voltage between 180 and 220 VAC NO YES Connect tightly and correctly Is the lead wire for compressor connected to PC board and compressor without becoming loose NO Re...

Page 126: ...ected by the thermistor of the radiation fin Malfunction decision conditions When the temperature of the inverter radiation fin increases abnormally due to faulty heat dissipation Supposed causes Acti...

Page 127: ...SIE13 02A Error Codes Outdoor Units 127 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 128: ...wer transistor into voltage with CT1 DC current sensor Malfunction decision conditions When overcurrent has run to power transistor Actuated even by instantaneous overcurrent Supposed causes Faulty co...

Page 129: ...129 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Caution Be sure to turn off power switch before connect or disconnect conn...

Page 130: ...etected by converting the current flowing to power transistor into voltage with CT1 DC current sensor Inverter PC board detects the disorder of position signal Malfunction decision conditions When com...

Page 131: ...131 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Caution Be sure to turn off power switch before connect or disconnect conn...

Page 132: ...converting the current flowing to power transistor into voltage with CT1 DC current sensor Inverter PC board detects the disorder of position signal Malfunction decision conditions When compressor ove...

Page 133: ...133 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting See also Check No 11 Outdoor Unit Check for Power Transistor on page 160 Caution Be sure to turn off power switch before connect or disconnect conn...

Page 134: ...her transmission between control and inverter PC board is carried out normally Malfunction decision conditions When the transmission is not carried out in a specified period of time or longer Supposed...

Page 135: ...SIE13 02A Error Codes Outdoor Units 135 Part 4 Troubleshooting 4 3 4 5 4 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred...

Page 136: ...lfunction decision conditions When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase Supposed causes Open phase Voltage imbalance between phases Fa...

Page 137: ...oor unit PC board Troubleshooting See also Check No 4 Resistance Conversion Table Ambient Coil Fin on page 153 Caution Be sure to turn off power switch before connect or disconnect connector or parts...

Page 138: ...differs from the outdoor unit capacity or a capacity setting adaptor except for PC board applicable models is installed Malfunction decision is made only when turning the power supply on Supposed cau...

Page 139: ...l of suction air superheating high pressure indoor heat exchanger temperature and indoor suction air temperature Malfunction decision conditions In cooling operation When compressor frequency does not...

Page 140: ...shooting 140 3 1 4 5 Troubleshooting See also 1 Check No 13 Check for Inadequate Refrigerant on page 161 2 Check No 8 Clogged Points on page 158 Caution Be sure to turn off power switch before connect...

Page 141: ...t in the inverter and power supply voltage drop for V3 only 150 170 VAC or when the power failure of several tons of ms or longer is generated or DC voltage is not in range of 305 380 VDC for W1 only...

Page 142: ...ding to wiring diagram V3 W1 Reactor coil resistance value 0 2 1 ohm V3 Capacitor C4 is correctly connected GREY cable is connected at the side of the grey stroke on the capacitor W1 Confirm the condi...

Page 143: ...end user Supposed causes Another error U3 only generated when other error is solved Operation OFF button pushed Power failure Troubleshooting Check if dry out schedule was interrupted If schedule was...

Page 144: ...are off it indicates that the transmission wiring between indoor and outdoor units may be incorrect or broken disconnected NO YES Is the power supply voltage between 180 and 220 VAC YES NO NO NO Wire...

Page 145: ...em Malfunctions 145 Part 4 Troubleshooting 4 3 4 5 4 See also Check No 10 Outdoor Unit Fan Speed Pulse on page 159 Caution Be sure to turn off power switch before connect or disconnect connector or pa...

Page 146: ...iquid thermistor R3T and the indoor suction air thermistor R1T B Difference in evaporation temperature Te or condensation temperature Tc during heating operation detected by the indoor heat exchanger...

Page 147: ...bleshooting 4 3 4 5 4 Troubleshooting See also 1 Check No 13 Check for Inadequate Refrigerant on page 161 2 Check No 8 Clogged Points on page 158 Caution Be sure to turn off power switch before connec...

Page 148: ...detects that the transmission between the hydro box and the remote controller is not normal over a certain amount of time Supposed causes The possible causes are Malfunctioning remote controller Malfu...

Page 149: ...error is generated when there is a combination mismatch between indoor outdoor Supposed causes Incorrect unit model Option D 04 not confirmed Functionality of X14A for AB models Troubleshooting Cauti...

Page 150: ...eshooting ESIE13 02A Part 4 Troubleshooting 150 3 1 4 5 6 Additional Checks for Troubleshooting 6 1 Check No 1 Outdoor Unit Checking the Installation Condition Check No 01 1 To check the installation...

Page 151: ...power ON to check whether the expansion valve is producing a clicking sound 5 Check the coil current Open circuit normal short circuit 6 Check the clicking sound again If Then The expansion valve has...

Page 152: ...tor R1T A2P Ambient sensor user interface R1T A3P Ambient sensor ON OFF thermistor R2T Outlet water after BUH thermistor R2T External sensor floor or ambient R3T Refrigerant liquid thermistor R4T Inle...

Page 153: ...3 62 4 70 4 54 4 38 4 23 4 08 3 94 3 81 3 68 3 56 10 111 99 108 96 30 16 10 15 76 70 3 50 3 44 9 8 7 6 5 4 3 2 1 106 03 100 41 95 14 90 17 85 49 81 08 76 93 73 01 69 32 103 18 97 73 92 61 87 79 83 25...

Page 154: ...nk thermistor is for EKHWS B and EKHWE domestic hot water tanks The relationship between normal temperature and resistance is shown in the graph and the table below Tank thermistor for EHV CA domestic...

Page 155: ...74 0 76 0 78 0 33 7 31 4 29 2 27 2 142 0 144 0 146 0 148 0 3 9 3 7 3 5 3 3 10 0 478 8 80 0 25 4 150 0 3 2 12 0 14 0 16 0 18 0 432 9 392 0 355 3 322 4 82 0 23 7 152 0 154 0 156 0 158 0 3 0 2 9 2 7 2 6...

Page 156: ...or unit installed under such conditions that short circuit easily occurs Visual inspection Is the piping length 5 meters or less Visual inspection Does air enter the refrigerant system Conduct refrige...

Page 157: ...If YES the check valve is caught Is the LPS normal Check continuity using a tester Is the hydro box installed under such conditions that short circuit easily occurs Visual inspection Is the refrigera...

Page 158: ...due to adherent contamination etc Replace the expansion valve 2 Accumulator Frosting Choked moisture Blow a nitrogen gas and then replace the refrigerant 3 Distributor Temperature difference Dust Chok...

Page 159: ...the contact terminal on the harness side with the connector connected 7 Disconnect the connector X107A with the power supply OFF and Operation OFF 8 Is the voltage between pins 4 and 3 of X107A about...

Page 160: ...g wind the condenser is charged and electric shock may result Therefore disconnect the connector from the outdoor unit fan motor after con firming that the outdoor unit fan has stopped 4 Before measur...

Page 161: ...tion superheat degree further increases In addition because the compressor frequency drops to the level of the lowest frequency 52 Hz and the refrigerant flow rate decrease low pressure cannot be main...

Page 162: ...wing operating conditions Diagnosis of excessive refrigerant charging In cooling operation 1 Because high pressure rises due to excessive charging overload control is carried out and capacity tends to...

Page 163: ...Operation Note Reference values for superheat degree to be used in the judgement of wet operation 1 Suction pipe superheat degree 4 C or more 2 Discharge pipe superheat degree 5 C or less The values a...

Page 164: ...performance must be adjusted Normal operation PWM model Pump in standby Normal operation Blinks red green Pump in function but stopped Pump restarts by itself after the fault is disap peared 1 Underv...

Page 165: ...ESIE13 02A 165 Part 5 Repair 4 3 4 5 5 Part 5 Repair What is in this part This part contains the following chapters Chapter See page 1 Tips and Tricks 166...

Page 166: ...Tips and Tricks ESIE13 02A Part 5 Repair 166 3 1 5 5 1 Tips and Tricks Not available at this moment...

Page 167: ...ESIE13 02A 167 Part 6 Maintenance 4 3 4 5 6 4 Part 6 Maintenance What is in this part This part contains the following chapters Chapter See page 1 Maintenance Schedule 168...

Page 168: ...dealer 4 Pressure relief valve hose Check that the pressure relief valve hose is positioned appropriately to drain the water If the optional drain pan kit is installed make sure that the pressure reli...

Page 169: ...d Programmer Timer Combination Boiler Fitted Not Required Fitted Not Required Fitted Not Required Fitted Not Required Provided Quantity litres No Yes No Yes ft3 hr Gas Inlet Pressure OR OR mbar m3 hr...

Page 170: ...Maintenance Schedule ESIE13 02A Part 6 Maintenance 170 3 1 6...

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