Mitsubishi Electric QAHV-N560YA-HPB Service Handbook Download Page 128

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[

Troubleshooting ]

- 121 -

HWE1517A

Troubleshooting

[1] Maintenance items

1. Checking the error history

Take the following steps to view the last six error histories (error codes).

Refer to “[2] 2.Diagnosing Problems Using Error Codes” for information about error codes. (page 129)

Setting procedure

Step 1

Set the dip switches

SW2 and SW3.

Set the dip switches on the circuit board as follows to view error histories.

SW2

SW3

OFF

Step 2

Select the desired

item with the push

switch SWP3.

Press the push switch SWP3 to toggle through the item codes listed below.

Select an item code from 1 through 18, and press either of the push switches SWP1 or

SWP2 to display the error history (error code) in blinking form.

Step 3

Press the push

switches SWP1 (

↑

) or

SWP2 (

↓

) to increase

or decrease the value.

Refer to "Error history item list" on the next page for the types of errors that appear on

error history.

Step 4

Press the push switch

SWP3 to save the

change.

Press SWP3 to stop the blinking and return to the item code display.

0000001906.book 121 ページ２０１８年７月１９日　木曜日　午前７時２２分

Summary of Contents for QAHV-N560YA-HPB

Page 1: ......

Page 2: ...r on electric parts To reduce the risk of electric shock malfunctions smoke or fire do not operate the switches buttons or touch other electrical parts with wet hands To reduce the risk of electric shock and injury from the fan or other rotating parts stop the operation and turn off the main power before cleaning maintaining or inspecting the unit To reduce the risk of burns or frost bites do not ...

Page 3: ... suitable for use as drinking water or for cooking It may cause health problems or degrade food In areas where temperature drops to freezing during the periods of non use blow the water out of the pipes or fill the pipes with anti freeze solution Not doing so may cause the water to freeze resulting in burst pipes and damage to the unit or the furnishings In areas where temperature drops to freezin...

Page 4: ...rainage work should be performed by the dealer or qualified personnel according to the instructions detailed in the Installation Manual Improper drainage work may cause rain water or drain water to enter the buildings and damage the furnishings Pipe installation To prevent explosion do not heat the unit with refrigerant gas in the refrigerant circuit Check for refrigerant leakage at the completion...

Page 5: ...te tools to install inspect or repair the unit To reduce the risk or malfunction turn on the power at least 12 hours before starting operation and leave the power turned on throughout the operating season Recover all refrigerant from the unit It is punishable by law to release refrigerant into the atmosphere Do not unnecessarily change the switch settings or touch other parts in the refrigerant ci...

Page 6: ... Refrigerant Circuit 47 2 Control Box of the Unit 50 3 Unit Circuit Board 52 IV Remote Controller 1 Using the Remote Controller 59 V Electrical Wiring Diagram 1 Electrical Wiring Diagram 73 VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 79 2 Principal Parts and Functions 80 VII Control 1 Functions and Factory Settings of the Dip switches 85 2 Operating characteristics and Control Capabilitie...

Page 7: ...CONTENTS HWE1517A GB 0000001906 book 2 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 8: ...icing 3 2 Necessary Tools and Materials 4 3 Brazing 5 4 Procedure 6 5 CO2 refrigerant manifold structure 11 6 Characteristics of the Conventional and the New Refrigerants 12 7 Notes on Refrigerating Machine Oil 13 0000001906 book 1 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 9: ... 2 HWE1517A GB 0000001906 book 2 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 10: ...nual 4 Preparing necessary tools Prepare a set of tools to be used exclusively with each type of refrigerant Refer to Necessary Tools and Materials for information on the use of tools page 4 5 If there is a leak of gaseous refrigerant and the remaining refrigerant is exposed to an open flame a poisonous gas may form Keep workplace well ventilated CAUTION Install new pipes immediately after removin...

Page 11: ...erant 2 Other tools 1 Welder Welder nozzle 250 or greater 2 Packless valve for checking the degree of vacuum 3 VaVacuum pump with a check valve or an adapter cuuming hose for R404A R407C Unit connection Swagelok 7 16 20UNF 4 Vacuum pump with a check valve or an adapter 5 Nitrogen pressure reductin valve for gas leak check for non oxidizing welding Pressure reduction valve that can be ad justed to ...

Page 12: ... copper pipe and copper coupling If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends 2 Reasons The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if water infiltrates into the system Flux generally contains chloride Residual flux in the refrigerant circuit will cause s...

Page 13: ...joints Use caution because a small amount of refrigerant may gush out Slowly open the high and low pressure service valves Open the valves to the point where water drips form on the pipes without freezing Be sure to open the valves slowly Opening the valves too quickly may cause dry ice to form at the release port which may trap the refrigerant in the unit or cause a large amount of refrigerant oi...

Page 14: ...unit where parts are replaced to ensure an absence of pressure in the pipe Residual pressure in the pipe can pose safety hazards Connect a nitrogen cylinder to purge the refrigerant circuit at a pressure of 0 05 MPa Be sure to thoroughly purge the refrigerant circuit to keep oxidized scale from forming Replace the parts by heating the welded areas Be careful that the heat from welding can expand t...

Page 15: ...d Refer to the 5 CO2 refrigerant manifold structure in the Attachment Charge the unit with nitrogen adjusting the pressure with the reduction valve to 8 5 MPa Once the charging pressure reaches 8 5MPa shut off the nitrogen cylinder valve Use caution because the charging pressure is high Charge nitrogen from the high pressure side Test the brazed areas for gas leak using foaming solution Make sure ...

Page 16: ...cuum valve on the manifold the low pressure service valve and CO2 cylinder valve are securely CLOSED This is done to evacuate the hose between the unit and the CO2 cylinder Packless valve is necessary for checking the degree of vacuum inside the unit Ordinary hose can be connected to this valve Because residual refrigerant may be present in dry ice condition perform vacuuming three times as shown ...

Page 17: ...er Open the high pressure service valve on the unit and charge the unit with the specified amount of CO2 Securely close the high pressure service valve on the unit open the valve on the CO2 cylinder and fill the section of the hose between the unit and the CO2 cylinder with CO2 If measurement of vacuum degree with a vacuum gauge is possible make sure the gauge reading is 266 Pa or below Failing to...

Page 18: ... Pressure gauge Vacuum valve Pressure valve Connection to air conditioning unit Connection to refrigerant cylinder Connection to vacuum pump Purge valve V V Connection to air conditioning unit V Connection to vacuum pump B Pressure gauge 2 Pressure gauge valve 1 Purge valve 3 Vacuum valve A Vacuum gauge Connection to refrigerant cylinder Circuit structure Low pressure gauge High pressure gauge Hig...

Page 19: ...gle Refrigerant Chloride Not included Not included Not included Included Safety Class A1 A1 A1 A1 A1 A1 Molecular Weight 44 0 72 6 86 2 86 5 Boiling Point C F 78 4 109 1 51 4 60 5 43 6 46 4 40 8 41 4 Steam Pressure 25 C MPa 77 F psi gauge 6 30 914 1 557 226 0 9177 133 0 94 136 Saturated Steam Density 25 C kg m3 77 F psi 242 64 0 42 5 44 4 Flammability Nonflammable Nonflammable Nonflammable Nonflam...

Page 20: ...types of refrigerant and refrigerating machine oil Cause Symptoms Effects on the refrigerant cycle Water infiltration Frozen expansion valve and capillary tubes Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Motor insulation failure Burnt motor Coppering of the orbiting scroll Lock Burn in on the orbiting scroll Hydrolysis Sludge formation and ad hesion Ac...

Page 21: ... I Read Before Servicing 14 HWE1517A GB 0000001906 book 14 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 22: ...Main Power Supply Wiring and Switch Capacity 19 4 Sample Installation 23 5 Switch Types and the Factory Settings 24 6 Configuring the Settings 25 7 Water Pipe Installation 33 8 Using the Unit in Sub freezing or Snowy Conditions 37 9 Secondary side control system 38 0000001906 book 15 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 23: ... 16 HWE1517A GB 0000001906 book 16 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 24: ...pplied dry contact switch relay or remote controller PAR W31MAA or centralized controller AE 200 External temperature sensor Unit MAIN circuit PCB Each unit is operated individually by connecting a dry contact switch relay to each unit External temperature sensor Field supplied dry contact switch relay or remote controller PAR W31MAA or centralized controller AE 200 MAIN unit SUB unit SUB unit s n...

Page 25: ...e for each refrigerant system Do not use a single multiple core cable to connect units that belong to different refrigerant systems The use of a multiple core cable may result in signal transmission errors and malfunc tions 2 Control wiring Different types of control wiring are used for different systems Types and maximum allowable length of cables Control lines are categorized into 2 types transm...

Page 26: ... earth leakage breaker for the inverter If no earth leakage breaker is installed there is a danger of electric shock Only use properly rated breakers and fuses Using a fuse or wire of the wrong capacity may cause malfunction or fire Note This device is intended for the connection to a power supply system with a maximum permissible system impedance shown in the above table at the interface point po...

Page 27: ... of a Unit and Terminal Block Arrangement To remove the front panel of the control box unscrew the four screws and pull the panel forward and then down Important Power supply cables larger than 25 mm2 in diameter are not connectable to the power supply terminal block TB2 Use a pull box to connect them 2 Installing the conduit tube Punch out the knockout hole for wire routing at the bottom of the f...

Page 28: ... cable route the power cable away from the transmission cable distance of at least 50 mm 2 in Top view Wiring Wiring Rubber bushing Rubber bushing oval part Rubber bushing oval part Cut Wiring Cables are coming out of the rubber bushing Top view Cross sectional view Sheet metal on the guard Rubber bushing Sheet metal on the guard Rubber bushing Tie band Overlapped rubber bushing Cut on the rubber ...

Page 29: ...rap inside the unit indicated as B in the figure to keep it out of contact with the pipes and other components 3 Thread the wiring through the rubber bush indicated as C in the figure second one from the left For details on the opening procedure of A and the wiring of B refer to pages 20 and 21 13 14 15 0 10 V 10 V GND Connect the flow sensor wiring to the terminal block inside the BOX The numbers...

Page 30: ...emote controller PAR W31MAA or centralized controller AE 200 External temperature sensor Unit MAIN circuit PCB Each unit is operated individually by connecting a dry contact switch relay to each unit External temperature sensor Field supplied dry contact switch relay or remote controller PAR W31MAA or centralized controller AE 200 MAIN unit SUB unit SUB unit s n units Inter unit wiring M NET line ...

Page 31: ...est run Upper side A under preparation Lower side B auto Always set to the lower side Setting to the upper side forcefully stops the pump and compressor thus the unit does not operate When SWS2 is set to the upper side the display shows P OFF and the setting cannot be made When P OFF appears set SWS2 to the lower side Discharge air outlet Service panel Control box Intake air inlet Rotary switch SW...

Page 32: ...P3 Enter The displayed value will stop blinking and stay lit A lit LED indicates that the new setting has been saved Pressing SWP1 or SWP2 will change the blinking setting value but the change will not be saved until SWP3 Enter is pressed If SWP3 is not pressed within one minute the change will not be saved and the display will return to the item code display mode Press and hold SWP1 or SWP2 for o...

Page 33: ... d n a m e D Outlet hot water temperature boiling temperature 9 ºC 40 Secondary contlol disabled 90 0 Secondary contlol enabled 80 0 65 High and low pressure display interval P 1051 Seconds 0 100 3 Low noise operation maximum capacity 1054 0 100 70 0 0 0 9 5 3 2 0 0 0 s e t u n i m d n a r u o H 8 5 0 1 e m i t t r a t s n o i t a r e p o e s i o n w o L 0 0 0 9 5 3 2 0 0 0 s e t u n i m d n a r u...

Page 34: ...orrect wiring and then switch on the power to the unit When the power is switched on the following codes will appear on the LED EEEE will appear on LED1 in the circuit board labeled A in the figure at right ng is displayed before the water flow rate adjustment operation is performed Cancel the ng display by using one of the following methods Press SWP3 Press SWP1 or SWP2 A ON 1 2 3 4 5 6 7 8 9 10 ...

Page 35: ...et as the preset values When AE 200 is connected to QAHV set the preset values referring to the notes below 106 Total number of units in the system Initial value 1 Leave it as it is 107 2 when connected to AE 200 Initial value 0 108 Not used 109 Not used 110 Function setting 1 when connected to AE 200 Initial value 0 111 M NET address of main sensor of own tank Initial value 1 112 to 120 Not used ...

Page 36: ...ith SWU2 Assign sequential addresses on all sub units starting with 2 3 Set the dip switch SW2 6 to OFF power supply to communication circuit External water temperature sensor Field supplied dry contact switch relay or remote controller PAR W31MAA or centralized controller AE 200 SW2 9 ON Address 1 SW2 6 OFF SW2 9 ON Address 2 SW2 6 OFF SW2 9 ON Address 1 n Inter unit wiring M NET line The main un...

Page 37: ...the circuit as necessary Item 106 must be set when multiple units are connected to a system 101 Not used 104 Not used 105 Function setting When AE 200 is not connected to QAHV the values set by rotary switches SWU1 and SWU2 are set as the preset values When AE 200 is connected to QAHV set the preset values referring to the notes on page 31 106 Total number of units in the system Initial value 1 10...

Page 38: ...ultiple system SWS1 in the SUB circuit on both the main and sub units will be ineffective When connecting AE 200 and remote controller PAR W31MAA simultaneously make the settings above and then turn off the power turn it back on and set 1 for item code 105 for the unit to which a remote controller is connected After these settings perform the procedures described in 5 on page 32 n o i t a r e p O ...

Page 39: ...F FFFF will appear in the LED1 2 Press and hold the push switch SWP3 for one second or longer While the system is starting up 9999 will appear on LED1 When start up is complete a control property 0001 will appear Then five seconds later FFFF will appear 3 Set the rotary switch SWU3 back to 0 1 Set the rotary switch SWU3 to F FFFF will appear in the LED1 2 Press and hold the push switch SWP3 for on...

Page 40: ...ded to prevent the noise and vibration from the pump from being transmitted 6 Drain pipe Install the drain pipe with a downward inclination of between 1 100 and 1 200 To prevent drain water from freezing in winter install the drain pipe as steep an angle as practically possible and minimize the straight line For cold climate installation take an appropriate measure e g drain heater to prevent the ...

Page 41: ... operation Anti freezing operation will keep the water in the tank circulated and water storage tanks can become thermally stratified Hot water storage operation Anti freezing operation Residual running of the pump The ON OFF control of 3 way valve depends on the output type r EXTERNAL DEVICE on page 75 0000001906 book 34 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 42: ... pebbles suspended solids and corrosion products in water can damage the heating surface of the heat exchanger and cause corrosion Install a good quality strainer 60 mesh or better at the inlet of the unit to filter out suspended solids 6 Connecting pipes made from different materials If different types of metals are placed in direct contact with each other the contact surface will corrode Install...

Page 43: ... the outlet hot water pipe to quickly raise low temperature water to the required temperature When the air accumulates in the pipe the resistance of the water circuit will increase and the flow rate will extremely decrease Because of this an installation of automatic air venting valves is required when there is a pipe that slopes down in the outlet hot water pipe Install the pipe with an upward gr...

Page 44: ...r from the piping Failure to do so may cause the residual water to freeze resulting in damage to the heat exchanger Before using the unit perform a test run such as water fill test or air bleeding test again Drainage method Procedure 1 Disconnect the outlet pipe 2 Disconnect the inlet pipe 3 Open the drain trap at the T shaped part 4 Completely remove water by blowing compressed air or nitrogen cy...

Page 45: ...xchanger 2 Temperature sensor Optional parts Measures and controls the secondary side outlet hot water temperature Install this component at the outlet of the heat exchanger 3 Plate heat exchanger Exchanges heat between hot water output from the unit and water input from the tank Select a heat exchanger that is appropriate for the capacity 4 Pump Flow rate adjustment device Outputs hot water from ...

Page 46: ...lect a vertically long heat exchanger Select a heat exchanger of which NTU is high although the heat transfer capacity improves as NTU increases the pressure loss becomes high 8 Valve Improves the workability of cleaning the heat exchanger and replacing parts Install these components in the two places of the chilled water passage section and the high temperature water passage section to enable rep...

Page 47: ...using the following method Values required for calculation Relationship between flow rate and pressure loss of corresponding heat exchanger Obtain the data from the heat exchanger manufacturer Calculation method Calculate the shearing stress using the following formula T1 Temperature difference between inlet and outlet T Temperature difference of high temperature part low temperature part K Overal...

Page 48: ... how to check the flow rate refer to page 93 If the flow rate is not within the range of 20 to 30 ℓ min select a different pump or adjust the maximum frequency using an inverter etc so that the maximum flow rate of 20 to 30 ℓ min is achieved To select a proper pump first select a pump that supports slightly high flow rate and then adjust the frequency with an inverter so that the flow rate becomes...

Page 49: ...or less The motor may be seized depending on the pump selected as this control is performed at a low frequency Select a pump of which flow rate at 100 output is between 20 to 30 ℓ min Notes on inverter selection and connection The inverter needs to be able to adjust output with a 0 to 10 input Select an inverter that will not cause the seizing of the motor Configure the settings so that the flow r...

Page 50: ...ircuit matches with the secondary side circuit water temperature criterion Setting procedure and operation overview 2 Purpose and application Prevent piping freezing when the secondary side control is used If the compressor is not run during the anti freezing operation in the secondary side control system there is a risk of the piping of the primary side freezing so set SW2 5 to ON so that the com...

Page 51: ...g operation to perform the secondary side control operation 1 Set the digital setting item 121 to 1 for details on the operating procedure refer to page 28 2 Perform a water flow rate adjustment operation for details refer to Water flow rate adjustment operation when the secondary side control is enabled page 92 e t a m i x o r p p a e r a d e t o n h t g n e l d n a e z i s e h T K C S 1 Q t i k ...

Page 52: ... 45 HWE1517A GB III Unit Components 1 Unit Components and Refrigerant Circuit 47 2 Control Box of the Unit 50 3 Unit Circuit Board 52 0000001906 book 45 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 53: ... 46 HWE1517A GB 0000001906 book 46 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 54: ...rd fixed plate Pillar LF Frame assy R Pillar B Fin guard LR Frame assy TF Pillar RF Frame assy MU Frame assy MBR H screw 1 WFT screw 2 Attachment leg Fin guard B Panel assy FU Frame assy MBL Cover piping Panel assy FB Guard fixed plate Base fan Fan Upset screw Motor Box nut 1 Each unit requires 47 H screws 2 Each unit requires 30 WFT screws 0000001906 book 47 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 55: ...iner Thermistor Pressure switch Pressure sensor Solenoid valve Solenoid coil Solenoid valve Solenoid coil Linear expansion valve Solenoid coil Quick adapter Pipe Thermistor Thermistor TH2 TH9 TH1 TH4 TH5 TH3 TH14 Solenoid valve Solenoid coil Solenoid valve Solenoid coil Expansion valve Solenoid coil Thermistor Thermistor FAN Band assy 3 3 3 When Compressor is replaced replace Band assy as well 000...

Page 56: ...cuit Pipe assy 2 Thermistor Two way valve Pipe assy 5 Pipe assy 8 Sensor Fastner Thermistor TH12 TH11 Pump Lead wire assy Pipe assy 6 Pipe assy 7 Heater assy Pipe assy 1 O ring Fastner Grease Pipe assy 3 0000001906 book 49 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 57: ...in circuit control box 80 81 Reactor Resistor Capacitor assy Fuse Terminal block Relay Short terminal relay Fuse Noise filter Control board assy Terminal block M NET borad Inverter board assy Fan inverter board assy Sheet 0000001906 book 50 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 58: ...f properties of the control box and may result in damage to its internal components 2 Faston terminals have a locking function Make sure the cable heads are securely locked in place Press the tab on the ter minals to remove them Fuse Power board assy Terminal block TB5 Terminal block TB4 Terminal block TB6 Relay board assy Terminal block Terminal block TB8 0000001906 book 51 ページ２０１８年７月１９日木曜日午前７...

Page 59: ...SWP1 3 LED3 Energization status Dip switch SW421 External signal input contact input F01 Fuse 250V 3 15A LED2 Lit during normal CPU operation CNIT Output 12VDC GND Output 5VDC CNVOUT Output 10V Input 0 10V GND RX Power supply detection input TX Power supply ON OFF signal output CNS2 Transmission line input output for centralized control system CN102 outdoor transmission line input output 30VDC Vol...

Page 60: ...IT 12VDC input GND 5VDC input Power supply detection output Power supply ON OFF signal input LED1 Power supply for indoor transmission line TP1 2 Check pins for outdoor transmission line TB7 Terminal block for transmission line for centralized control TB3 outdoor transmission block Ground terminal for transmission line Grounding Grounding CN04 Bus voltage input P N Grounding 0000001906 book 53 ページ...

Page 61: ...tage check terminal N Note 1 SC P2 Bus voltage Input P SC P1 Rectifier diode output P LED1 Lit Inverter in normal operation Blink Inverter error CN6 Open No load operation setting Short circuited Normal setting CN5V GND 5VDC output RSH1 Overcurrent detection resistor CN4 GND Fan Board Serial communication signal output CN2 Serial communication signal output GND 17VDC input SC V Inverter output V C...

Page 62: ...ication signal output CN5 GND Control board Serial communication signal output CN21 Serial communication signal output GND INV board Input 17VDC CN22 GND INV board Input 5VDC Serial communication signal input GND INV board Output 17VDC LED1 Inverter in normal operation LED2 Inverter error DIP IPM Rear R630 R631 Overcurrent detection resistor 0000001906 book 55 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 63: ...2 N current P N TB21 Input output L1 TB22 Input output L2 TB23 Input output L3 TB24 Input N CN1B Input L3 L2 CN1A Input N L1 Grounding F1 F2 F3 F4 Fuse 250VAC 6 3A CN3 Output L1 N Grounding CN2 Surge absorber circuit Surge absorber circuit Short circuit Short circuit 0000001906 book 56 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 64: ... 57 HWE1517A GB IV Remote Controller 1 Using the Remote Controller 59 0000001906 book 57 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 65: ... 58 HWE1517A GB 0000001906 book 58 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 66: ...lamp will come off and the operation will stop 2 Operation mode and set temperature settings Operation mode setting Button operation F1 F2 F3 F4 Press the F1 button to go through the operation modes in the order of Mode1 Mode2 and Mode3 Select the desired operation mode Mode1 Mode2 Mode3 Set temperature setting Button operation F1 F2 F3 F4 Press the F2 button to decrease the set temperature and pr...

Page 67: ...d Press the F1 button to select a pattern Press the F2 button to select the item you want to change Press the F3 or F4 button to switch to the desired setting Time Set in 5 minute increments Hold down the button to change the value continuously Operation mode Off The options available vary depending on the connected unit If you select an operation mode other than Off the connected unit will operat...

Page 68: ...3 F4 The suitable periods for the period timer will be displayed To set the period Press the F1 or F2 button to select the specified date and then press the F3 button Move to 3 To set the operation Press the F1 or F2 button to select the specified date and then press the F4 button Move to 4 3 F1 F2 F3 F4 The period setting screen will be displayed Press the F1 or F2 button to move to the item you ...

Page 69: ...cannot be made with the remote controller After switching to the desired setting press the Select button A setting confirmation screen will appear Navigating through the screens To save the settings Select button To return to the Main display Menu button To return to the previous screen Return button F1 F2 F3 F4 In the Operation setting screen press the F1 button to move the cursor to Schedule Pre...

Page 70: ...r details You cannot set a time period that spans the Day Start Time Example 1 When the Day Start Time is 22 00 on August 1 and 2 and the time period is 22 00 to 08 00 The shaded periods in the figure below indicate when Power Save is used Actual date July 31 Actual date August 1 Actual date August 2 Actual date August 3 0 4 8 12 16 20 0 4 8 12 16 20 0 4 8 12 16 20 0 4 8 12 Delimiter based on the ...

Page 71: ... 00 6 30 100 100 100 6 30 7 00 100 60 50 Because Power Save is set from 7 00 control begins based on the Power Save setting 7 00 11 30 50 60 50 11 30 12 00 50 100 50 While the contact is ON or Power Save is being applied the maximum capacity will be limited to whichever is the lower value of the Power Save and demand control settings While the contact is OFF and Power Save is not applied control w...

Page 72: ... and 2 overlap only period specified in 1 will be implemented Press the F1 to F4 buttons to set the period and then press the Select button 3 F1 F2 F3 F4 The Power Save screen will be displayed Press the F4 button 4 F1 F2 F3 F4 Press the F1 to F4 buttons to set the Power Save start time end time and control value Unit1 FRI Weekly timer Period timer Power Save Unit1 FRI Period Edit Action Unit1 Set...

Page 73: ...ropriately such as by writing them down on paper Button operation 1 F1 F2 F3 F4 Select Service from the Main menu and press the Select button 2 F1 F2 F3 F4 A password input screen will be displayed Enter the current maintenance password a 4 digit number After entering the 4 digit password press the Select button If the password is correct the Service menu will be displayed 3 F1 F2 F3 F4 Select Uni...

Page 74: ...d To continue making settings press the Return button to return to the screen in procedure 3 Use the same procedure to set other connected unit and Data settings Navigating through the screens To return to the Service menu Menu button To return to the previous screen Return button Unit1 FRI Unit initial set Control pattern Unit Setting Function setting Storage Monitor Unit1 FRI Function setting M ...

Page 75: ...on 3 Enter a 3 digit function setting number and press the Select button The setting information send screen appears When the information is sent successfully the function setting values appear in the result display screen To continue operation press the Return button to return to the screen of step 2 Set other M NET address and function setting number using the same procedure Navigating through t...

Page 76: ...peration time 10 h 006 Outlet hot water temperature 0 1ºC Current values 007 Inlet water temperature 0 1ºC 008 High pressure 0 1 MPa 009 Low pressure 0 1 MPa 010 Discharge refrigerant temperature 0 1ºC 011 Suction refrigerant temperature 0 1ºC 012 Operating frequency 0 1 Hz 013 Flow velocity sensor 0 1 L min 016 Secondary side outlet water temperature 0 1ºC 017 Secondary side flow velocity sensor ...

Page 77: ... 70 IV Remote Controller GB HWE1517A 0000001906 book 70 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 78: ... 71 HWE1517A GB V Electrical Wiring Diagram 1 Electrical Wiring Diagram 73 0000001906 book 71 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 79: ... 72 HWE1517A GB 0000001906 book 72 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 80: ...1 black CNWP green CN422 blue CN801 yellow CNVOUT CN501 CNS2 CN102 CNIT yellow CNIT red CN04 red yellow CN409 red CN33 3 TB1 ELB1 power supply 3N 50Hz 380 400 415V REMOTE SWS2 SWS1 LOCAL OFF SWP3 SWP2 SWP1 ENTER UP F06 AC250V 3 15A T X02 X03 41 40 63H1 SWU3 SWU1 SWU2 TH11 TH12 1 H T 5 H T TH4 TH9 t t t t t t t t TH2 TH3 PSL1 PSH1 LEV1 Relay4 8 board DC280 340V Rectifier circuit MP1 TH16 t DOWN TB3...

Page 81: ...remote controller wiring and wiring of 100V or greater Do not place them in the same conduit tube or cabtyre cable as this will damage the circuit board F121 H2 Electric heater Antifreeze MP1 Pump motor MVW1 Water flow control valve SV3 SV4 Solenoid valve Defrost 3 Solenoid valve Defrost 4 SV5 Solenoid valve Injection circuit S1 Water flow rate sensor Water flow rate sensor Thermistor of symbol it...

Page 82: ...on g WATER TEMP SETTING CONTROL Water temperature control can be set by using the external analog input to the CN421 on the circuit board One analog input type can be selected from the following types 4 20 mA 1 5 V 0 10 V or 2 10 V CN421 2 3 h EXTERNAL WATER SENSOR 1 optional TB5 25 26 i EXTERNAL WATER SENSOR 2 optional TB5 27 28 j EXTERNAL WATER SENSOR 3 TB5 27 30 k EXTERNAL WATER SENSOR secondar...

Page 83: ...erminal block TB8 No voltage contact output Control terminal block TB5 Optional thermistor Remote controller Control terminal block TB4 Optional flow sensor Control terminal block TB6 No voltage contact input 0000001906 book 76 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 84: ... 77 HWE1517A GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 79 2 Principal Parts and Functions 80 0000001906 book 77 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 85: ... 78 HWE1517A GB 0000001906 book 78 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 86: ...ant temp sensor Air side heat exchanger outlet refrigerant temp sensor outside temp sensor outlet water temp sensor inlet water temp sensor Compressor Shell temp sensor High pressure switch water flow control valve water flow rate sensor S S S S S S S S S S E A M HP PS FS PS LEV3 E LEV1 Air side Heat Exchanger TH9 SV1 TH4 TH5 strainer2 Refrigerant Heat Exchanger TH11 TH14 TH1 water outlet SV2 Gas ...

Page 87: ...pressure 2 Provides high pressure protection 14 0MPa OFF setting Thermi stor TH1 Discharge 0 C 32 F 698kohm 10 C 50 F 413kohm 20 C 68 F 250kohm 30 C 86 F 160kohm 40 C 104 F 104kohm 50 C 122 F 70kohm 60 C 140 F 48kohm 70 C 158 F 34kohm 80 C 176 F 24kohm 90 C 194 F 17 5kohm 100 C 212 F 13 0kohm 110 C 230 F 9 8kohm Degrees Celsius Resistance check Pressure 0 15 MPa Vout 0 5 4 5V 0 026V 0 098 MPa Pres...

Page 88: ...re Controls inverter cooling fan based on THHS temperature Degrees Celsius 0 C 32 F 161kohm 10 C 50 F 97kohm 20 C 68 F 60kohm 25 C 77 F 48kohm 30 C 86 F 39kohm 40 C 104 F 25kohm Sole noid valve SV1 2 3 4 defrost control Controls defrost cycle AC220 240V Open while being powered closed while not being pow ered Continuity check with a tester SV5 INJ control Turns on off the injection AC220 240V Open...

Page 89: ...valve driven by a stepping motor 50 480 pulses direct driven type Continuity Test with a Tester Continuity between white brown and or ange Continuity between yellow red and blue LEV1 Refrigerant flow adjust ment Adjusts refrigerant flow during heating DC12V Opening of a valve driven by a stepping motor 60 480 pulses direct driven type Continuity Test with a Tester Continuity between white brown an...

Page 90: ... 83 HWE1517A GB VII Control 1 Functions and Factory Settings of the Dip switches 85 2 Operating characteristics and Control Capabilities 105 0000001906 book 83 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 91: ... 84 HWE1517A GB 0000001906 book 84 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 92: ...M 8 9 1Individual Multiple system 2AE connection 1Selects between individual and Multiple system 2Selects AE connection or not OFF Individual system Multiple system or during AE connection At a reset 10 Display mode switch 7 This switch is used in combination with dip switches SW3 5 through 3 10 and push switches SWP 1 2 and 3 to configure or view the settings when performing a test run or changin...

Page 93: ...he Sub unit t u p n i l a n g i s e h t s e r o n g I F F O t i n u b u S e h t f o l a n g i s t u p n i e h t s w o l l o F E T O M E R OFF LOCAL t u p n i l a n g i s e h t s e r o n g I t u p n i l a n g i s e h t s e r o n g I OFF REMOTE REMOTE LOCAL Follows the input signal fed through a dry contact interface Follows the input signal of the Main unit t u p n i l a n g i s e h t s e r o n g I...

Page 94: ...nd TH16 on the unit 3 y t i r o i r P 2 y t i r o i r P 1 y t i r o i r P Target water temperature Analog input Main board on the unit Remote controller PAR W31MAA Centralized controller AE 200 Schedule setting No remote controller Manual setting Schedule setting Item code 1073 2 Item code 1073 0 Ineffective Ineffective Ineffective Temperature setting for the analog signal input When schedule has ...

Page 95: ...N starting water flow e Stop operation 1 Change the setting of PCB DIP SW1 8 from ON to OFF The pump and motor operated valve 2 are automatically set to CLOSED ending water flow f Stop operation 2 Change the setting of PCB slide SWS1 from LOCAL to REMOTE Step Contents Operation and check points Supplemental explanation a Water level check Check the water level is not the full level Water is suppli...

Page 96: ...m startup operation Press SWP1 or SWP2 to delete the ng from the PCB s digital display changing the display to C25 Note 1 As a stopgap measure change the settings of SW2 9 and SW2 3 as shown in the table below then restart the power If water shutoff error 2601 occurs during the air bleeding operation remove the cause of the problem then change the setting of PCB slide SWS1 from LOCAL to OFF and ba...

Page 97: ...t n e t n o C p e t S a Water level check Check the water level is neither at the full or empty level Water is supplied even when the target water level has been reached b Power operation Turn the power ON If the startup operation has not finished SW2 9 and SW2 3 need to be set as a stopgap measure see Note 1 If this flow rate adjustment operation has never been performed ng is displayed c Operati...

Page 98: ...when the pump output opening is 16 Not whole air is bled out Note 1 Change SW2 9 and SW2 3 as a stopgap procedure as shown in the table below and then turn the power on Note 2 The table below shows the water flow rate adjustment operation status in 4 figures when the PCB DIP switch is set as shown in Note 3 Note 3 PCB DIP switch settings Multiple unit change over switch SW2 9 Local internal change...

Page 99: ...djustment operation in this case 3 Press SWP1 or SWP2 to display the operation result flow rate characteristic corresponding each flow rate code dxx in Table 1 and write them down Step Contents Operation and check points Supplemental explanation a Water level check Check the water level is neither at the full or empty level Water is supplied even when the target water level has been reached b Powe...

Page 100: ...nd 30 ℓ min Does a value from 1 ℓ min to 4 ℓ min exist for the flow rate at an arbitrary output except 0 If there was no value from 1 ℓ min to 4 ℓ min for the flow rate when any output except 0 the flow rate may not be able to be controlled at a low flow rate Carry out the air bleeding and flow rate adjustment operations again Take a measure such as adjusting the frequency using an inverter etc so...

Page 101: ...ote 3 PCB DIP switch settings Multiple unit change over switch SW2 9 Local internal change over switch SW2 3 N O F F O d e t e l p m o c t o n s a h n o i t a r e p o p u t r a t s n e h W d e t e l p m o c s a h n o i t a r e p o p u t r a t s n e h W Water flow rate adjustment operation status Display g n d e t e l p m o c t o N g d e t e l p m o C g n i n o i t a r e p o n I 3 W S 2 W S 10 5 6 ...

Page 102: ...tches SWP1 and SWP2 to change the value of the selected item The value will keep blinking while it is being changed Step 3 Press the push switches SWP1 or SWP2 to increase or decrease the value Step 4 Press the push switch SWP3 to save the change Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to save the setting Once the new setting is saved the display will stop blink...

Page 103: ... of changing the setting with SWP1 or SWP2 to save the setting Once the new setting is saved the display will stop blinking and stay lit The display will then return to the item code display mode If SWP3 is not pressed within one minute the change will not be saved and the display will return to the item code display mode SW2 SW3 10 5 6 7 8 9 10 OFF OFF OFF OFF ON OFF OFF Settings table Only for s...

Page 104: ... ON When multiple units are connected When a remote controller is not connected the setting for item code 105 is not required Address Item code 105 106 107 110 111 1214 1 1 3 2 1 1 1 2 2 3 2 0 1 1 3 3 3 2 0 1 1 1 2 3 PAR W31 Storage tank M NET cable Address Item code 106 110 111 112 1214 1 3 1 1 2 2 2 3 2 1 2 3 3 0 1 2 SW2 9 ON 1 2 3 AE 200 PAR W31 Storage tank M NET cable SW2 9 ON When a remote c...

Page 105: ...lected item The value will keep blinking while it is being changed Step 3 Press the push switches SWP1 or SWP2 to increase or decrease the value Step 4 Press the push switch SWP3 to save the change Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to save the setting Once the new setting is saved the display will stop blinking and stay lit The display will then return to ...

Page 106: ...itches SWP1 or SWP2 to increase or decrease the value Step 4 Press the push switch SWP3 to save the change Press SWP3 once within one minute of changing the setting with SWP1 or SWP2 to save the setting Once the new setting is saved the display will stop blinking and stay lit The display will then return to the item code display mode If SWP3 is not pressed within one minute the change will not be ...

Page 107: ...ush switch SWP3 Press the push switch SWP3 to select item code 2 Press the push switches SWP1 or SWP2 to change the value of the selected item The value will keep blinking while it is being changed Step 3 Press the push switches SWP1 or SWP2 to increase or decrease the value Step 4 Press the push switch SWP3 to save the change Press SWP3 once within one minute of changing the setting with SWP1 or ...

Page 108: ...w setting is saved the display will stop blinking and stay lit The display will then return to the item code display mode If SWP3 is not pressed within one minute the change will not be saved and the display will return to the item code display mode Step 5 Turn the power back on Reset the system After changing the settings re initialize the system according to the procedures detailed on page 32 SW...

Page 109: ...ff A will be displayed while the compressor is in operation S will be displayed while the compressor is stopped S will be displayed while the fan is forced to operate will be displayed when this function is disabled d will be displayed when the peak demand control function is enabled will be displayed when this function is disabled Displays the operation mode H will be displayed during water heati...

Page 110: ...ging the settings to save the change When the new setting is saved the display will stop blinking and stay lit The display will then return to the item code display mode If SWP3 is not pressed within one minute the change will not be saved and the display will return to the item code display mode Step 1 Set dip switches SW2 SW3 SW421 1 and SW421 2 SW421 1 SW421 2 4 20 mA ON ON 0 10 V OFF OFF 1 5 V...

Page 111: ... be linearly interpolated When the water temperature setting input signal type is set to 3 2 10 V External analog input signal of between 2 9 and 9 1 V the preset temperature will be linearly interpolated temp B 90ºC temp A 40ºC 5 9 mA Input current 18 3 mA Preset temperature B A Input current 5 9 mA 12 4 mA A Change of 0 12 mA or less is not recognized temp B 90ºC temp A 40ºC 1 0 V Input voltage ...

Page 112: ...bove was detected the unit will make an abnormal stop Air side HEX inlet temp vacuum protec tion TH4 Air side HEX inlet temp OFF ºC A heat side heat exchanger inlet temperature of 14ºC or 0 78 x TH9 16 ºC or less was detected Compressor shell temp compressor floodback protec tion TH14 Comp shell temp OFF ºC A shell bottom SH temperature of 10ºC or below has been detected for 40 minutes while the c...

Page 113: ... met 1 Refrigerant temperature at the air heat exchanger inlet is at or below the value determined in relation to the outdoor temperature 2 2 Cumulative compressor operation time has reached 35 minutes since the completion of the last defrost op eration 3 Cumulative compressor operation time has reached 35 minutes since the operation ON signal was sent Or the outdoor temperature is 15ºC or below a...

Page 114: ...cond intervals to bring the high pressure to the target pressure 7 LEV in the main circuit Operating range of the LEV The opening range of the LEV is between 60 and 480 fully open LEV operation speed Open 30 7 pulse sec Close 30 7 pulse sec At startup For one minute and thirty seconds after startup the valve will be fixed to the Initial Setting During operation Ninety or more seconds after startup...

Page 115: ...will override the one before the power fail ure For three minutes after the power is restored the unit will not operate Automatic restoration after power failure is set to Disabled SW3 2 is set to OFF The unit will stop displaying the error code for power failure The error will be cleared when the op eration command signal is off The maximum allowable number of compressor startup times is set to 3...

Page 116: ...d control function is a function that restricts the maximum capacity of the units The maximum operation capacities of the units are restricted to specific levels relative to the maximum capacity of the units the compressors are operating at the maximum rotation speed 100 Hz on the unit described in this manual being set as 100 100 100Hz The compressor will operate at the maximum rotation speed of ...

Page 117: ...ed according to the preset water temperature When a dry contact input is received from the local controller the unit will be operated in the hot water storage operation except when it is already operated in the water heating mode PAR W31MAA or AE 200 is required when three sensor method is used TH15 TH16 TH17 TH15 TH16 TH17 TH16 55 C Mode2 Thermo differential value code 1509 QAHV start running TH1...

Page 118: ...quires the installation of at least two units When using only one unit for industrial use three sensors will be used SUB MAIN Hot water storage operation is started or stopped based on the readings of six water temperature sensors that are installed to the water storage tank The use of six sensors requires at least two units When a dry contact input is received from the local controller the unit w...

Page 119: ...l box on the unit Unit 50 48 T2 T1 A B constant 3460K R 1 2 Sensor Sensor properties Resistance R 15KΩ 3 0 C Terminal block for connection to the sensor M4 screws 3 Terminal screws A B B Note Run the sensor wiring at least 5 cm away from any wire that carries a voltage of 100 V or more and do not put the sensor wiring in the same conduit tube with it ø 7 8 54 42 157 20 12 ø10 Ø6 Connect the sensor...

Page 120: ...A GB VIII Test Run Mode 1 Items to be checked before a Test Run 115 2 Operating the Unit 117 3 Refrigerant 118 4 Standard operating characteristics Reference data 118 0000001906 book 113 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 121: ... 114 HWE1517A GB 0000001906 book 114 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 122: ...gize the compressor 6 Check the pressure Translate the pressure readings into saturating temperatures and make sure these values fall into the ranges specified in the table below 7 Check that the correct voltage is applied Check that the voltage that is applied while the unit is stopped and the load side voltage of the solenoid contactor in the relay box during operation are within the voltage ran...

Page 123: ... temperature can be controlled based on the inlet or the outlet temperature sensor reading Select one to use Refer to VII 1 1 Factory Switch Settings Dip switch settings table page 85 and 3 Setting the outlet hot water temperature page 98 for how to select the water temperature control method and how to set the water temperature Do not disconnect the power wire to the compressor in an attempt to k...

Page 124: ...it that protects the compressor from short cycling Once the compressor stops it will not start up again for up to 10 minutes If the unit does not start when the ON OFF switch is turned on leave the switch turned on for 10 minutes The unit will automatically start up within 10 minutes To stop an operation Switch off the Run Stop switch that controls the unit on the on site control panel or press th...

Page 125: ... 7 8 Shell temperature C 18 20 Air side heat exchanger inlet C 2 6 Outside temperature C 7 16 Inlet water temperature C 9 17 Outlet water temperature C 65 65 Pressure High pressure MPa 9 5 10 Low pressure MPa 3 2 3 7 LEV opening Main circuit pulse 170 180 Injection pulse 60 60 Compressor Frequency Hz 78 73 Fan Frequency rpm 650 540 Unit type QAHV N560YA HPB Refrigerant type R744 Refrigerant charge...

Page 126: ...ing 1 Maintenance items 121 2 Troubleshooting 126 3 Troubleshooting Principal Parts 136 4 Refrigerant Leak 152 5 Parts Replacement Procedures 153 6 Removing scale from the gas cooler 159 0000001906 book 119 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 127: ... 120 HWE1517A GB 0000001906 book 120 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 128: ...FF OFF OFF ON ON Step 2 Select the desired item with the push switch SWP3 Press the push switch SWP3 to toggle through the item codes listed below Select an item code from 1 through 18 and press either of the push switches SWP1 or SWP2 to display the error history error code in blinking form Step 3 Press the push switches SWP1 or SWP2 to increase or decrease the value Refer to Error history item l...

Page 129: ... heat exchanger inlet c08 First decimal place Refrigerant temperature at air heat exchanger outlet c09 First decimal place LEV opening c10 Integer High pressure c12 Second decimal place Second decimal place Low pressure c13 Compressor frequency c14 Integer SH target superheat c15 First decimal place SH actual superheat c16 First decimal place Inverter pump opening c17 First decimal place First dec...

Page 130: ...d data type They will appear alternately at one second intervals Every time SWP2 is pressed the time will go back by one minute and the time and the temperature or pressure will appear alternately at one second intervals Each time SWP1 is pressed the time will advance by one minute and the time and the temperature or pressure will appear alternately at one second intervals The time immediately bef...

Page 131: ...mal place Refrigerant temperature at air heat exchanger outlet c09 First decimal place LEV opening c10 Integer High pressure c12 Second decimal place Second decimal place Low pressure c13 Compressor frequency c14 Integer SH target superheat c15 First decimal place SH actual superheat c16 First decimal place Inverter pump opening c17 First decimal place Valve opening pulse c18 Integer Heatsink temp...

Page 132: ... is saved the display will stop blinking and stay lit The display will then return to the item code display mode If SWP3 is not pressed within one minute the change will not be saved and the display will return to the item code display mode 0 Local control method 1 Three sensor method 2 Six sensor method Item code Increments Lower limit Upper limit Initial value 0 2 0 1 4 1 2 1 g n i t t e s d o h...

Page 133: ...hermistor has tripped 1102 LEV fault in the main circuit Replace the LEV in the main circuit Injection LEV fault Replace the injection LEV Injection solenoid valve fault Replace the solenoid valve Refrigerant gas leakage Leakage test Refrigerant undercharge Repair the cause of refrigerant shortage evacuate the system and charge the refrig erant circuit with refrigerant A thermistor error was detec...

Page 134: ...necessary High pressure is too high Check the items above and make neces sary adjustments so that the suction gas temperature falls within the specified tem perature range Overcurrent passed through the compressor 4250 Outside temperature is high Overload operation Burnt motor Seized compressor Reduce the operation load and check the operation patterns Replace the compressor A water supply cutoff ...

Page 135: ...ndary side is low The difference be tween the supply water temperature on the pri mary side and the sec ondary side is too large Excess water flow on the secondary side pump Reconfigure the system to decrease the minimum flow rate on the secondary side circuit e g Change the pump Secondary side flow sensor fault Check the flow sensor and replace as nec essary Error code 2616 1 was detected Capacit...

Page 136: ... circuit Fan motor error broken motor wire Refrigerant shortage gas leakage 2601 Water supply cutoff Water flow rate sensor Wat t l u a f e v l a v l o r t n o c w o l f r e t a W p o r d w o l f r e Pump fault Water flow rate sensor 2601 2 Secondary side water supply cutoff error Water circuit air entrainment water strainer clogged Flow sensor fault pump fault motor operated valve fault water flo...

Page 137: ...he unit will come to an abnormal stop If it is detected that the heat exchanger outlet refrigerant temperature sensor TH3 is open or short circuited for continuous 20 seconds or longer Error code 5103 will appear and the unit will come to an abnormal stop If it is detected that the air side heat exchanger inlet refrigerant temperature sensor TH4 is open or short circuited for continuous 20 seconds...

Page 138: ...a h p n e p o n a s i e r e h T e s a h p n e p O Error code 1 PCB 2 RC M NET Error type Cause Installation Setting error Cause Parts problems Error reset 3 Unit side PCB Remote SWS1 Operation SW If it is detected that the high pressure sensor is open or short circuited for continuous 20 seconds or longer Error code 5201 will appear and the unit will come to an abnormal stop If it is detected that...

Page 139: ...ews cracked due to swelling 4250 4255 105 Overcurrent error due to a short circuited During operation Inter phase voltage drop Inter phase voltage at or below 180 V Ground fault of the compressor Shorted output wiring 4250 4255 101 Current related prob lems at start up IPM error At startup INV board fault 4250 Fan board fault 4255 Ground fault of the compressor Coil problem IPM error loose termina...

Page 140: ...ssor fault 5301 5305 115 t l u a f d r a o b V N I t l u a f r o s n e s T C C A Ground fault of the compressor and IPM error 5301 5305 116 r o t c e n n o c d r a o b V N I e h t t a t c a t n o c r o o P r o s n e s T C C D CNCT Poor contact at the INV board connector DCCT Ground fault of the compressor and IPM error 5301 5305 117 r o t c e n n o c d r a o b V N I e h t t a t c a t n o c r o o P...

Page 141: ...er Heat exchanger deteriorated 2616 2 Secondary side heat exchanger error Heat exchanger selection error Initial heat exchanger selection error Error code 1 PCB 2 RC M NET Error type Cause Installation Setting error Cause Parts problems Error reset 3 Unit side PCB Remote SWS1 Operation SW If the limit switch does not work properly at the initial control stage or when the command signal is sent to ...

Page 142: ...will be detected as an error only when the Automatic recovery after power failure setting on the unit is set to Disable The default setting for the Automatic recovery after power failure setting is Enable 5 Depending on the system configuration if communication error lasts for 10 minutes or longer units will make an abnormal stop This error can be reset by turning off and then back on the unit s p...

Page 143: ...k the pressure on the self diagnosis LED1 1 When the pressure displayed on self diagnosis LED1 is between 0 and 0 098MPa the high pressure sensor has a problem 2 When the pressure displayed on self diagnosis LED1 is approximately 15MPa the control board has a problem 4 Remove the high pressure sensor from the control board and short circuit between the No 2 and 3 connectors 63HS CN63HS to check th...

Page 144: ...board has a problem When the outdoor temperature is 40 C or less the control board has a problem When the outdoor temperature exceeds 40 C go to 5 4 Remove the low pressure sensor from the control board and short circuit between the No 2 and 3 connectors 63LS CN63LS to check the pressure with the self diagnosis LED1 1 When the pressure displayed on the self diagnosis LED1 exceeds 10MPa the low pre...

Page 145: ...ponding connectors Check each sensor by disconnecting the corresponding connector TH1 CN401 TH2 CN402 1 2 TH3 CN402 3 4 TH4 CN404 TH5 CN408 TH9 CN405 TH12 CN407 1 2 TH11 CN407 3 4 TH14 CN422 2 3 2 Pull out the sensor connector from the I O board Do not pull on the lead wire Measure the resistance with a tester If the measured value is within 10 of the value as shown in the table below the circuit ...

Page 146: ...es will be off 2 When the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates Output state Output phase number 1 ON OFF OFF OFF 2 ON ON OFF OFF 3 OFF ON OFF OFF 4 OFF ON ON OFF 5 OFF OFF ON OFF 6 OFF OFF ON ON 7 OFF OFF OFF ON 8 ON OFF OFF ON 1 2 3 4 Upon power on a 2260 pulse signal is sent to the LEV to determine the valve position and bring the valve to the...

Page 147: ...EV opening angle does not change all the output phases will be off 2 When the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates Upon power on a 520 pulse signal is sent to the LEV to determine the valve position and bring the valve to the position indicated by in the diagram Pulse signal is output for approximately 17 seconds The LEV is free of noise and vib...

Page 148: ...d the valve has a problem Replace the LEV Disconnected or short circuited LEV motor coil MAIN Measure resistance between the coils red white red orange brown yellow brown blue using a tester They are normal if resistance is 34 3ohm 4 3ohm Replace the LEV coils INJ Measure resistance between the coils red white red orange brown yellow brown blue using a tester They are normal if resistance is 46ohm...

Page 149: ... the pipe will be bent 2 Installing the coils Fix the body tightly at the bottom Part A in the figure so that the body will not move then insert the coils from the top and insert the coil stopper securely in the pipe on the body Hold the body when pulling out the coils to prevent so that the pipe will not be bent If the coils are pushed without the body gripped undue force will be applied and the ...

Page 150: ...V or less It takes about 10 minutes to discharge electricity after the power supply is turn off 2 The IPM on the inverter becomes damaged if there are loose screws are connectors If a problem occurs after replacing some of the parts mixed up wiring is often the cause of the problem Check for proper connection of the wiring screws connectors and Faston terminals 3 To avoid damage to the circuit boa...

Page 151: ... 146 8 Noise is picked up by the peripheral device 1 Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit 2 Check if the inverter output wiring is not running parallel to the power supply wiring and the transmission lines 3 Check that the shielded wire is used as the transmission line when it is required and check that the ground...

Page 152: ...nt in the compressor If there is none replace the com pressor 2 Compressor coil resistance failure Coil resistance value of 0 583 ohm 20 C Replace the compressor 3 Check wheth er the inverter is damaged No load 1 Disconnect the invert er output wire from the terminals of the INV board SC U SC V SC W 1 Inverter related problems are de tected Connect the short circuit connec tor to CN6 and go to sec...

Page 153: ... than the larger of the fol lowing values imbalance of 5 or 5V Replace the INV board if there is a voltage imbalance Check the crankcase heater for problems if there is no volt age imbalance When the error occurred liq uid refrigerant may have been present in the compressor 5 Check the fan motor ground fault or the winding Remove the wire for the out door fan motor and check the fan motor megger a...

Page 154: ...ents of main inverter circuit page 148 IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 4 Turn on the outdoor unit and check that it operates normally 1 Operates normally without tripping the main breaker a The wiring may have been short circuit ed Search for the wire that s...

Page 155: ... connected the INV board and make the measurement 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance can be measured Part name ...

Page 156: ... SC L3 Red SC P1 5 200 ohm 5 200 ohm 5 200 ohm FT N SC L1 5 200 ohm SC L2 5 200 ohm SC L3 5 200 ohm Black SC P2 FT N SC U SC V SC W Red SC P2 5 200 ohm 5 200 ohm 5 200 ohm FT N SC U 5 200 ohm SC V 5 200 ohm SC W 5 200 ohm SC L1 SC L2 SC L3 SC P2 SC P1 FT N SC V SC W SC U 0000001906 book 149 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 157: ...iring and connector disconnection Check for shorted transmission line or power feed collision for centralized control Replace the control board Check the voltage between No 1 and No 2 pins of the CN102 on the power supply board for the transmission line Check the voltage between No 1 and No 3 pins of the noise filter CN4 Check the voltage between No 1 and No 3 pins of the noise filter CN5 Check th...

Page 158: ...e affected parts it is not necessary to replace the entire unit 4 Be sure to recover the refrigerant from the unit before disposing of the unit 5 If the cause of the problem cannot be identified contact the service desk with the following information unit model serial number and the nature of the problem 2 Before replacing the fan 1 Before replacing the fan turn off the main power of the unit 2 Th...

Page 159: ...I 4 4 Vacuuming the refrigerant circuit for detailed procedure page 9 WARNING Do not use refrigerant other than the type indicated in the manuals provided with the unit and on the nameplate Doing so may cause the unit or pipes to burst or result in explosion or fire during use during repair or at the time of disposal of the unit It may also be in violation of applicable laws MITSUBISHI ELECTRIC CO...

Page 160: ...rews each Remove the main box 2 screws sub box 3 screws and then the mid section frame 4 screws Use a magnetic screwdriver to keep the removed screws from being dropped into the mechanical section of the unit Remove the following parts screws quick fasteners sheet metals and weights 4 2 screws 5 2 screws 6 4 screws 7 6 screws 4 on sheet metal and 2 on saddle 8 3 screws 9 1 screw 0 4 screws a 2 scr...

Page 161: ...e in the figure below and pull the gas cooler forward Install the gas cooler braze the pipes and re place all parts that were removed in the steps above 5 4 Insert the tabs on the gas cooler leg into the corresponding slots Gas cooler assy standard 㻌㻌㻌Parts code R12 030 105 Gas cooler assy BS 㻌㻌㻌Parts code R12 031 105 Procedure Replacement instructions for the gas cooler QAHV N560YA HPB 0000001906...

Page 162: ... 3 2 screws 4 2 screws 5 6 screws 4 on sheet metal and 2 on saddle 6 3 screws 7 1 screw 8 4 screws Remove the following sheet metals 9 4 screws 0 2 screws a 2 screws b 1 screw Disconnect the wires first and then remove the sheet metals 4 Step No 1 2 3 Scroll compressor Parts code R69 143 478 Parts to prepare as necessary Compressor suction pipe Parts code R12 006 011 Compressor discharge pipe Part...

Page 163: ...l wires back to the original condition Remove the compressor by removing the compressor fixing fittings with a spanner 6 7 5 Compressor fixing fittings 4 sets Bolt M8X50 Washer ø26 Rubber washer Spacer Compressor fixing fittings 4 sets Bolt M8X50 Washer ø26 Rubber washer Spacer Four saddles 8 screws Silicon rubber Plastic band Welding bead If compressor oil has collected at the bottom use caution ...

Page 164: ...plates 1 and 2 2 screws each Remove the main box 2 screws sub box 3 screws and then remove the mid section frame 4 screws Use a magnetic screwdriver to keep the removed screws from being dropped into the mechanical section of the unit Remove the following rubber spacers sheet metals and coils Number of screws 3 2 4 2 6 3 7 1 8 2 9 4 0 3 a 3 b 3 c 1 f 3 Collect refrigerant in accordance with the in...

Page 165: ...razing the areas encircled in the figure below Cover the LEV and the surrounding sheet metals with a wet cloth to protect them from the torch flame Debraze the areas encircled in the figure below to remove the solenoid valves and LEVs Replace them with new ones After replacing the solenoid valves and LEVs re place the coil and sheet metals and reconnect wires back to the original condition 4 3 Ste...

Page 166: ...he cleaning water circuit When to stop 4 Cleaning procedure Cleaning Rinsing with water after cleaning Neutralizing Rinsing after neutralization When the rising of pH slows down When the pH of rinsing water reaches 5 pH or above When pH stabilizes for about 30 minutes without adding NaOH When rinsing water is neutralized pH around 7 Starting cleaning Cleaning complete 5 Restoring water circuit 6 R...

Page 167: ...iagram for the location of pipe connections 3 The short pipe is installed as shown in Photo 2 It can be disassembled into three components 1 Short pipe 2 fastener and 3 gas cooler pipe To remove these components first remove the saddle shown in Photo 1 from the top pull up and out the fasteners 2 and then remove the gas cooler pipes 3 that are connected to the short pipe 1 If the thickness of scal...

Page 168: ...valve 6 Pump Set up the cleaning water circuit by removing built in components from the unit as shown on the next page Shut off the power to the unit close the valves at the hot water supply port 3 and water inlet 4 and then connect the cleaning water circuit to the unit Cleaning water circuit is connected to the unit at the hot water supply port on the back of Heat pump unit 1 and at the gas cool...

Page 169: ...ipe 4 Install the pipe as shown below using a quick fastener 5 for reduced pipe Quick adapter locally procured Service parts code R12 008 675 4 Quick fastener for straight pipe 5 Quick fastener for reduced pipe 6 Gas cooler inlet pipe 2 Water inlet pipe 5 Quick fastener for reduced pipe Reassemble the following parts and a quick adapter locally procured as shown in the figure below 2 Water inlet p...

Page 170: ...le If there is no obvious rise in the pH stop cleaning Not much more of scale can be removed 1 Make sure that the water inlet pipe has a port for connecting a pipe for chemical cleaning Formic acid citrate oxalic acid acetic acid or phosphate acid diluted to 5 can be used as a cleaning solution to remove scale Do not use hydrochloric acid sulfuric acid or nitric acid for cleaning because they are ...

Page 171: ... submersible pump is to be used See Figure 4 3 4 Use this circuit for rinsing out the system with water after cleaning After rinsing out after neutralizing the water circuit restore the water circuit Then open all valves at the hot water supply port 3 and water inlet 4 Heat pump unit Perform an air vent operation Operating the system with the air trapped in the pipe will leave the built in pump id...

Page 172: ... 165 HWE1517A GB X Attachments 1 R744 refrigerant saturation temperature table 167 0000001906 book 165 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 173: ... 166 HWE1517A GB 0000001906 book 166 ページ２０１８年７月１９日木曜日午前７時２２分 ...

Page 174: ...9 3 70 3 30 5 02 15 27 6 34 25 04 1 08 35 53 2 40 12 01 3 72 3 51 5 04 15 43 6 36 25 17 1 10 35 06 2 42 11 74 3 74 3 71 5 06 15 59 6 38 25 31 1 12 34 59 2 44 11 46 3 76 3 91 5 08 15 75 6 40 25 44 1 14 34 12 2 46 11 19 3 78 4 11 5 10 15 91 6 42 25 58 1 16 33 66 2 48 10 92 3 80 4 31 5 12 16 07 6 44 25 71 1 18 33 21 2 50 10 65 3 82 4 51 5 14 16 23 6 46 25 84 1 20 32 76 2 52 10 38 3 84 4 71 5 16 16 39...

Page 175: ... X Attachments 168 HWE1517A GB 0000001906 book 168 ページ２０１８年７月１９日木曜日午前７時２２分 ...

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Mitsubishi Electric QAHV-N560YA-HPB, Service Handbook

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