Daikin ERQ Series Service Manual Download Page 56 | Manualshive

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Outline of Control

ESiEN09-06 A

46

Function

6.3

Freeze Prevention

Freeze
Prevention by Off
Cycle (AHU)

When the temperature detected by liquid pipe temperature thermistor (R2T) of the AHU heat
exchanger drops too low, the unit enters freeze prevention operation in accordance with the
following conditions, and is also set in accordance with the conditions given below.

Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min., or
temperature is -5°C or less for total of 10 min.
Conditions for stopping freeze prevention: Temperature is +7°C or more for 10 min.
continuously

Ex: Case where temperature is -5°C or less for total of 10 min.

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Summary of Contents for ERQ Series

Page 1: ...ESiEN09 06 A Service Manual ERQ Condensing Unit Three Phase ERQ 125 200 250 A7W1B EKEQD F MCB A V3 control box EKEXV 50 63 80 100 125 140 200 250 400 500...

Page 2: ......

Page 3: ...on Mode 23 2 Basic Control 24 2 1 Normal Operation 24 2 2 Compressor PI Control 25 2 3 Step Control of Outdoor Unit Fans 27 2 4 Outdoor Unit Fan Control in Cooling Operation 28 3 Special Control 29 3...

Page 4: ...llation and Operation Manual 63 6 System B EKEQM box Installation and Operation Manual 84 1 Test Operation 98 1 1 Installation Process 98 1 2 Procedure and Outline 99 1 3 Operation When Power is Turne...

Page 5: ...3 3 24 J3 Outdoor Unit Malfunction of Discharge Pipe Thermistor R3 R31 33T 224 3 25 J5 Outdoor Unit Malfunction of Thermistor R2T R7T for Suction Pipe 225 3 26 J6 Outdoor Unit Malfunction of Thermisto...

Page 6: ...ddress Undefined 259 4 Troubleshooting OP Unified ON OFF Controller 261 4 1 Operation Lamp Blinks 261 1 Piping Diagrams 268 1 1 Outdoor Unit 268 2 Wiring Diagrams for Reference 271 2 1 Outdoor Unit 27...

Page 7: ...plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipme...

Page 8: ...the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation...

Page 9: ...e valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves an...

Page 10: ...trical shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the dr...

Page 11: ...ESiEN09 06 A General Information 1 1 Model Names of Outdoor Unit Control Box and Expansion Valve Kit 2 1 1 Outdoor Units 2 1 2 Control Box 3 1 3 Expansion Valve Kit 4 2 Combination Table 5...

Page 12: ...ion Valve Kit ESiEN09 06 A 2 General Information 1 Model Names of Outdoor Unit Control Box and Expansion Valve Kit 1 1 Outdoor Units Outlook Model name W1 3 phase 380 415V 50Hz Series Model Name Power...

Page 13: ...of external device DDC controller Control type X Control of refrigerant temperature by means of external device DDC controller Control type Y Control of evaporation and condensing temperature Te Tc b...

Page 14: ...valve kit must be selected to these limitations Saturated suction temperature SST 6 C SH superheat 5 K air temperature 27 C DB 19 C WB Outdoor unit class EKEXV kit 125 EKEXV63 140 200 EKEXV100 250 250...

Page 15: ...t exchanger capacity COOLING kW Allowed heat exchanger capacity HEATING kW Minimum Maximum Minimum Maximum Cap class EXV EKEXV50 5 0 6 2 5 6 7 0 EKEXV63 6 3 7 8 7 1 8 8 EKEXV80 7 9 9 9 8 9 11 1 EKEXV1...

Page 16: ...Combination Table ESiEN09 06 A 6 General Information...

Page 17: ...ESiEN09 06 A Specifications 7 1 Specifications 8 1 1 Outdoor Units 8...

Page 18: ...0 85 Plastic kg 0 215 0 265 Heat exchanger Specifications Length mm 1483 1778 Nr of rows 54 Fin pitch 2 Nr of passes 8 18 Face area m 1 762 2 112 Nr of stages 2 Empty tubeplate hole 0 Tube type HI XSS...

Page 19: ...antity 4 Notes Nominal cooling capacities are based on indoor temperature 27 CDB 19 CWB outdoor temperature 35 CDB equivalent refrigerant piping 7 5m level difference 0m Nominal heating capacities are...

Page 20: ...t interrupter earth leakage circuit breaker MSC means the maximum current during start up of the compressor Maximum allowable voltage range variation between phases is 2 RLA is based on following cond...

Page 21: ...06 A Refrigerant Circuit 11 1 Refrigerant Circuit 12 1 1 ERQ 125 A7W1B 12 1 2 ERQ 200 A7W1B 14 1 3 ERQ 250 A7W1B 16 2 Functional Parts Layout 18 2 1 ERQ 125 A7W1B 18 2 2 ERQ 200 A7W1B 19 2 3 ERQ 250 A...

Page 22: ...re O S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV compressor In order to prevent the increase of high pressure when a malfunction occurs this switch is activ...

Page 23: ...ESiEN09 06 A Refrigerant Circuit Refrigerant Circuit 13 ERQ 125 A7W1B 3D050782 5 6 2 K T E D M N A P O W G J 4 3 1...

Page 24: ...when a malfunction occurs this switch is activated at high pressure of 4 0 MPa or more to stop the compressor operation T Pressure regulating valve Liquid pipe This valve opens at a pressure of 4 0 M...

Page 25: ...ESiEN09 06 A Refrigerant Circuit Refrigerant Circuit 15 ERQ 200 A7W1B 3D050783 5 7 6 2 3 1 4 D N A P M O W T E F V G J...

Page 26: ...e of 4 0 MPa or more to stop the compressor operation Q S2PH HP pressure switch For STD compressor 1 U Pressure regulating valve Liquid pipe This valve opens at a pressure of 4 0 MPa for prevention of...

Page 27: ...ESiEN09 06 A Refrigerant Circuit Refrigerant Circuit 17 ERQ 250 A7W1B 3D050784 8 6 F V G 7 J O X B Q D M N U W A P 2 4 3 1 5 E...

Page 28: ...1B Plan Front View THERMISTOR ACCUMULATOR Accumulator ass y Heat exchanger THERMISTOR THERMISTOR R7T THERMISTOR Pressure switch High pressure protection S1PH Solenoid valve Accumulator oil return Y2S...

Page 29: ...Parts Layout Refrigerant Circuit 19 2 2 ERQ 200 A7W1B Plan Front View THERMISTOR Accumulator High pressure sensor S1NPH Heat exchanger THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTO...

Page 30: ...s Layout ESiEN09 06 A 20 Refrigerant Circuit 2 3 ERQ 250 A7W1B Plan Front View THERMISTOR THERMISTOR Accumulator Heat exchanger THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR ELECTR...

Page 31: ...on 35 4 Protection Control 36 4 1 High Pressure Protection Control 36 4 2 Low Pressure Protection Control 37 4 3 Discharge Pipe Protection Control 38 4 4 Inverter Protection Control 39 4 5 STD Compres...

Page 32: ...by high pressure sensor Pe S1NPL Value detected by low pressure sensor SH Evaporator outlet superheat SHS Target evaporator outlet superheat SVO Y2S Solenoid valve for oil return SVP Y1S Solenoid valv...

Page 33: ...ESiEN09 06 A Function general Function 23 1 2 Operation Mode...

Page 34: ...rol High pressure protection Low pressure protection Td protection INV protection Outdoor unit fan M1F Cooling fan control Step 7 or 8 Four way valve 20S1 Y1R OFF ON Main motorized valve EV1 Y1E 480 p...

Page 35: ...ty to adjust Te to achieve target value TeS Te Low pressure equivalent saturation temperature C Te set value Make this setting while in Setting mode 2 TeS Target Te value Varies depending on Te settin...

Page 36: ...STD1 1 52 Hz OFF 2 56 Hz OFF 3 62 Hz OFF 4 68 Hz OFF 5 74 Hz OFF 6 80 Hz OFF 7 88 Hz OFF 8 96 Hz OFF 9 104 Hz OFF 10 110 Hz OFF 11 116 Hz OFF 12 124 Hz OFF 13 132 Hz OFF 14 144 Hz OFF 15 158 Hz OFF 16...

Page 37: ...above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode STEP No Fan revolutions rpm ERQ 125 ERQ 200 ERQ 250 0 0 0 0...

Page 38: ...ppropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to AHU Upper limit of fan revolutions Step 8 Upper limit of outdoor unit fan revolutions Step 7 1 step on outdoor u...

Page 39: ...tdoor unit fan STEP4 Ta 20 C OFF Ta 20 C STEP4 1 step 15 sec when Pc 2 16MPa 1 step 15 sec when Pc 1 77MPa Four way valve 20S1 Holds OFF OFF Main motorized valve EV1 0 pls 480 pls 480 pls Subcooling m...

Page 40: ...d from Tc Te and compressor loads Outdoor unit actuator Oil return preparation operation Oil return operation Post oil return operation Compressor Take the current step as the upper limit 5 HP 52 Hz L...

Page 41: ...Pe 0 4 MPa Outdoor unit fan STEP7 or STEP8 OFF STEP8 Four way valve ON OFF ON Main motorized valve EV1 SH control 480 pls 480 pls 55 pls Subcooling motorized valve EV2 SH control 0 pls 0 pls Hot gas...

Page 42: ...rm the operations listed in the table above Non operating units perform the operations listed in the table above from the Defrost operation Non operating unit stops during Defrost preparation operatio...

Page 43: ...sor stops the pump down residual operation is conducted 3 4 2 Pump down Residual Operation in Heating Operation Actuator Master unit operation Compressor 124 Hz OFF OFF Outdoor unit fan Fan control Fo...

Page 44: ...efrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater Actuator Operation Compressor OFF Outdoor unit fan Ta 30 C STEP4 Ta 30 C OFF Four wa...

Page 45: ...ctuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Accumulator oil return valve...

Page 46: ...ooling operation In heating operation High pressure not limited Pc 3 10MPa System load down 1 steps Current step maintained Pc 3 10MPa EV1 opening adjustment Reducing low pressure to make high pressur...

Page 47: ...ction Control Function 37 4 2 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure In cooling operation In...

Page 48: ...e temperature INV compressor STD compressor HTds 120 C continues for 5 min or more HTds 135 C Tp 135 C continues for 10 min or more Tp 145 C or Applicable STD compressor stops After 10 min Discharge p...

Page 49: ...ercurrent protection control Inverter fin temperature control Tfin 84 C Fin temp standby Tfin 81 C INV upper limit rps max Under fin temperature protection control INV upper limit frequency 1 step 1 m...

Page 50: ...frigerant flow into the suction side to reduce the discharge pipe temperature for the compressor protection STD compressor ON CT detection current value 15 0A STD compressor OFF for 30 min Demand to o...

Page 51: ...acity turn ON the emergency operation is functional If the total capacity of units with thermostat ON is small the outdoor unit cannot operate If the emergency operation is set while the outdoor unit...

Page 52: ...e 4 Press the SET button BS2 once 5 Press the RETURN button BS3 twice 6 Press the MODE button BS1 once In order to set STD1 compressor to operation prohibition mode set No 19 of Setting mode 2 to STD1...

Page 53: ...ntinuous Demand Setting or external input by external control adapter is required 5 3 Heating Operation Prohibition Heating operation is prohibited above 24 C ambient temperature Set item Condition Co...

Page 54: ...controller near the position of the user when the suction temperature is near the preset temperature Ex When cooling Assuming the preset temperature in the figure above is 24 C and the suction temper...

Page 55: ...When heating Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 28 C A D Body thermostat sensor is used for temperatures from 18 C to 25 C...

Page 56: ...freeze prevention operation in accordance with the following conditions and is also set in accordance with the conditions given below Conditions for starting freeze prevention Temperature is 1 C or l...

Page 57: ...C or lower after the said timer completes the operative period Reset the 60 minute timer when the fan stops running Heating Turn OFF the fan for a period of 60 minutes at a suction temperature of 5 C...

Page 58: ...Outline of Control ESiEN09 06 A 48 Function...

Page 59: ...50 1 1 System A PAIR 50 1 2 System B MULTI 52 2 W X Y Z Control 55 2 1 W Control 55 2 2 X Control 57 2 3 Y Control 58 2 4 Z Control 58 3 Wiring Diagram of Control Box 60 3 1 D box 60 3 2 F box 61 4 A...

Page 60: ...HU by an outdoor inverter heat pump 2 systems can be used System A PAIR application ERQ outdoor System B MULTI application VRV outdoor 1 1 System A PAIR System A PAIR ERQ EXV Kit Pair application here...

Page 61: ...Control Boxes Control Box EKEQ CBV3 51 Dedicated power supply Attention power supply 2 types depending on control type power supply power supply remarks distances A B C D E F only in combination with...

Page 62: ...equired The required control box for this application is EKEQM Also EKEQFCBA can be combined with VRV but in that case maximum 3 AHU s can be combined with the VRV and no indoors Piping Communication...

Page 63: ...ESiEN09 06 A Different Systems with their Control Boxes Control Box EKEQ CBV3 53 System B VRV EXV kit Dedicated power supply power supply power supply distances A B C D E...

Page 64: ...ght Connection ratio 50 110 Piping Communication A B B C D E VRV consider same as 1 indoor unit length 5 m follow std VRV wiring length policy 50 m 50 m AHU KIT n Indoor 1 Indoor n EXV kit Control Box...

Page 65: ...ly BRC1D E only for service Possibility for Td Ts or Tr control Flexibility in applications Higher cost DDC controller required In case of W control a DDC controller is required to operate the unit Th...

Page 66: ...he cooling capacity will be 100 The same T of 4 C in heating operation means that the field supplied controller needs to output 0 V so that the heating capacity will be 0 The response of the field sup...

Page 67: ...hich the level decreases Example Room temperature 20 C set temperature 25 C Heating operation DDC controller calculates the difference and sends a 3 VDC signal fictive value to the control box This is...

Page 68: ...ntrol With Y control there is no external input to change Te Tc value Their values can only be changed by local setup with a Daikin remote controller during installation We refer to the chapter Field...

Page 69: ...taller 0 0 0 0 30 Schedule timer button Customer 0 0 0 0 31 Time adjust buttons Customer 0 0 0 0 32 Temperature adjust buttons Customer 0 0 0 0 33 Operation change min max button Customer 0 0 0 0 34 S...

Page 70: ...Wiring Diagram of Control Box ESiEN09 06 A 60 Control Box EKEQ CBV3 3 Wiring Diagram of Control Box 3 1 D box...

Page 71: ...ESiEN09 06 A Wiring Diagram of Control Box Control Box EKEQ CBV3 61 3 2 F box...

Page 72: ...Box EKEQ CBV3 4 Attention Points Do not forget to place the capacity setting adaptor Otherwise you ll get UA or PJ error All capacity setting adaptors are delivered with the control box Polarity of t...

Page 73: ...ESiEN09 06 A System A EKEQF EKEQD box Installation and Operation Manual Control Box EKEQ CBV3 63 5 System A EKEQF EKEQD box Installation and Operation Manual...

Page 74: ...INSTALLATION AND OPERATION MANUAL EKEQFCBAV3 EKEQDCBV3 Option kit for combination of Daikin condensing units with field supplied air handling units...

Page 75: ...F C1 C2 FAN L N R3 R4 R1 R2 Y6 Y5 Y4 Y3 Y2 Y1 Y6 Y5 Y4 Y3 Y2 Y1 expansion valve gas liquid N L P1 P2 C5 C6 0 10 V remocon outdoor F1 F2 T1 T2 ON OFF error C1 C2 operation C3 C4 0 10 3 4 6 5 R3T R2T 11...

Page 76: ...1 2 6 X24A 6 7 10 3 2 11 5 1 4 9 8 5 3 L N R3 R4 R1 R3T R2 Y6 Y5 Y4 Y3 Y2 Y1 Y6 Y5 Y4 Y3 Y2 Y1 expansion valve gas liquid N L R2T R1T air R5 R6 P1 P2 remocon outdoor F1 F2 T1 T2 ON OFF C1 C2 FAN F2 F1...

Page 77: ...erature or air discharge temperature Operation with fixed Te Tc temperature control In cooling this system operates on a fixed evaporating temperature In heating this system operates on a fixed conden...

Page 78: ...the outdoor unit operation range or operation reliability may be influenced if you neglect these limitations EKEQFCB EKEQDCB Thermistor R1T 1 Thermistor R3T R2T 2 5 m cable 2 Insulation sheet 2 Rubbe...

Page 79: ...ding on the expansion valve Connect the correct selected capacity setting adaptor to X24A A1P See figure 4 Outdoor unit class EKEXV kit Outdoor unit class EKEXV kit 100 EKEXV63 125 200 EKEXV100 250 12...

Page 80: ...sent Where machines generating electromagnetic waves are present Where acidic or alkaline vapor is present The option boxes must be installed with entrances downward REFRIGERANT PIPING WORK For refrig...

Page 81: ...valve kit box securely with 4 screws through the provided holes 9 mm Brazing work For details see manual of the outdoor unit 3 Prepare the inlet outlet field piping just in front of the connection do...

Page 82: ...onnector according to the wiring diagram 5 Make sure that field wiring and insulation is not squeezed when closing the valve kit box cover 6 Close the valve kit box cover 4x M5 INSTALLATION OF THE ELE...

Page 83: ...nit the capacity of the circuit breaker and switch wiring and wiring instructions Attach the earth leakage circuit breaker and fuse to the power supply line Connection of the wires inside the control...

Page 84: ...N Neutral Connector Wire clamp Protective earth screw Separate component Optional accessory BLK Black BLU Blue BRN Brown GRN Green GRY Gray ORG Orange PNK Pink RED Red WHT White YLW Yellow Take specia...

Page 85: ...X1M R3 R4 Thermistor gas X1M R5 R6 Thermistor air X1M T1 T2 Input ON OFF X1M Y1 6 Expansion valve Field wiring L Live N Neutral Connector Wire clamp Protective earth screw Separate component Optional...

Page 86: ...allation of the thermistor cable 1 Put the thermistor cable in a separate protective tube 2 Always add a pull relief to the thermistor cable to avoid strain on the thermistor cable and loosening of th...

Page 87: ...ng unit is ON OPERATION AND MAINTENANCE If T1 T2 is used to control the operation of the air handling unit the following convention is used Closing the T1 T2 signal starts operation of the air handlin...

Page 88: ...apacity control of the system The system needs a field supplied controller with a tempeature sensor The temperature sensor can be used to control the following temperatures Suction air temperature of...

Page 89: ...and EKEQFCBA control boxes Mode No Code No Description of setting 22 12 3 01 Fan ON at thermo OFF 02 Fan ON at thermo OFF 03 Factory setting Fan OFF at thermo OFF Mode No Code No Description of settin...

Page 90: ...or air handling unit is blocked by obstacles Remove the obstacle and make it well ventilated Check if the air filter is clogged Ask a qualified service person to clean the air filter The error signal...

Page 91: ...Installation and operation manual 82 EKEQFCBAV3 EKEQDCBV3 Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212 1 2014 08 NOTES...

Page 92: ...EKEQFCBAV3 EKEQDCBV3 Option kit for combination of Daikin condensing units with field supplied air handling units 4P383212 1 2014 08 Installation and operation manual 83...

Page 93: ...System B EKEQM box Installation and Operation Manual ESiEN09 06 A 84 Control Box EKEQ CBV3 6 System B EKEQM box Installation and Operation Manual...

Page 94: ...erde luchtbehandelingsunits Manual de instalaci n y operaci n Kit de opciones para la combinaci n de unidades de condensaci n Daikin con unidades de tratamiento de aire suministradas Manuale di instal...

Page 95: ...6 X24A 6 7 10 3 2 11 5 1 4 9 8 5 3 L N R3 R4 R1 R3T R2 Y6 Y5 Y4 Y3 Y2 Y1 Y6 Y5 Y4 Y3 Y2 Y1 expansion valve gas liquid N L R2T R1T air R5 R6 P1 P2 remocon outdoor F1 F2 T1 T2 ON OFF C1 C2 FAN F2 F1 10...

Page 96: ...may fluctuate depending on selected air handling unit and depending on the installation configuration Do NOT connect the system to DIII net devices This could result in malfunction or breakdown of th...

Page 97: ...This control box can only be used in heat pump applications Depending on the heat exchanger a connectable EKEXV expansion valve kit must be selected to these limitations Table 1 Saturated suction temp...

Page 98: ...osition must be downwards Precautions Do not install or operate the unit in rooms mentioned below Where mineral oil like cutting oil is present Where the air contains high levels of salt such as air n...

Page 99: ...ther diameters mm sizes taken the following into account select the pipe size nearest to the required size use the suitable adapters for the change over from inch to mm pipes field supply Cautions for...

Page 100: ...connection with tape eventually Electrical work 1 Open the electrical box cover A 2 Push out ONLY the second lower wire intake hole B from inside to outside Do not damage the membrane 3 Pass valve cab...

Page 101: ...legislation Refer to the installation manual attached to the outdoor unit for the size of power supply electric wire connected to the outdoor unit the capacity of the circuit breaker and switch wirin...

Page 102: ...ler X1M R1 R2 Thermistor liquid X1M R3 R4 Thermistor gas X1M R5 R6 Thermistor air X1M T1 T2 Input ON OFF X1M Y1 6 Expansion valve Field wiring L Live N Neutral Connector Wire clamp Protective earth sc...

Page 103: ...ermistor cable or loosening of the thermistor may result in bad contact and incorrect temperature measurement Fixation of the thermistor 1 Fix the thermistor with insulating aluminum tape field supply...

Page 104: ...osing the T1 T2 signal starts operation of the air handling unit Opening the T1 T2 signal stops operation of the air handling unit WHAT TO DO BEFORE OPERATION Field settings for EKEQMCB Refer to the i...

Page 105: ...andling unit is blocked by obstacles Remove the obstacle and make it well ventilated Check if the air filter is clogged Ask a qualified service person to clean the air filter The error signal is given...

Page 106: ...on 98 1 1 Installation Process 98 1 2 Procedure and Outline 99 1 3 Operation When Power is Turned On 112 2 Outdoor Unit PC Board Layout 113 3 Field Setting 114 3 1 Field Setting from Remote Controller...

Page 107: ...Test Operation ESiEN09 06 A 98 Test Operation 1 Test Operation 1 1 Installation Process Below Figure shows the installation process Install in the order of the steps shown...

Page 108: ...EN09 06 A Test Operation Test Operation 99 1 2 Procedure and Outline Follow the following procedure to conduct the initial test operation after installation 1 2 1 Check work prior to turn power supply...

Page 109: ...Test Operation ESiEN09 06 A 100 Test Operation 1 2 2 Turn power on...

Page 110: ...ng the shutoff valve The refrigerant charge port is connected to unit pipe When shipped the unit contains refrigerant so use caution when attaching the charge hose Gauge manifold Charge hose valve To...

Page 111: ...vacuum breakdown with nitrogen gas then depressurize down to 100 7 kPa for an hour using the vacuum pump vacuum drying 2 If the pressure does not reach 100 7 kPa even after depressurizing for at leas...

Page 112: ...n the cap securely For the tightening torque refer to the item Tightening Torque To close 1 Remove the cap and turn the shaft clockwise with the hexagon wrench JISB4648 2 Securely tighten the valve un...

Page 113: ...o around 10 minutes for the compressor to start up after the unit starting operating This is not a malfunction About refrigerant charging The refrigerant charge port is connected to the piping inside...

Page 114: ...nt charging operation procedure and charge the remaining refrigerant of the additional charging amount For performing the refrigerant charging operation the push button on the PC board A1P of outdoor...

Page 115: ...peration within the refrigerant system that have the power off unit the operation cannot finish properly For confirming the number of the outdoor and AHUs with the power on see How to check how many u...

Page 116: ...oard A1P is as shown in the table below and transmission is normal LED display OFF ON Blinking STEP4 Make the onsite settings as needed using the push button BS1 BS5 on the outdoor unit PC board A1P w...

Page 117: ...nected to the outdoor unit and revise if necessary UF There is conflict on the connection of transmission wiring in the system Check if the refrigerant piping line and the transmission wiring are cons...

Page 118: ...sk of electric shock if any live part is touched 1 2 5 2 Onsite Settings with the Power On Use the push button switches BS1 through BS5 on the outdoor unit PC board A1P to make the necessary onsite se...

Page 119: ...to see if cold or hot air is coming out from the AHU NOTE Heating is not possible if the outdoor temperature is 24 C or higher Refer to the Operation manual If a knocking sound can be heard in the liq...

Page 120: ...TION label And attach the label on the back side of the front panel Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the I...

Page 121: ...dress Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above AHU If ON button is pushed during operation described above the UH malfunction indicator blinks Returns...

Page 122: ...r unit PC board BS1 BS2 BS3 BS4 BS5 H1P H2P H3P H4P H5P H6P H7P H8P 1 2 3 4 1 2 3 4 F1 F2 F1 F2 Q1 Q2 Indoor Outdoor Outdoor Outdoor Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microc...

Page 123: ...the normal mode press the button for a minimum of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 Push the upper button and select FIRST CODE NO 4 Push th...

Page 124: ...set and the FIELD SET MODE is entered 3 Select the desired MODE No with the BS2 BUTTON 3 temperature setting and the BS3 BUTTON 3 temperature setting 4 Push the BS9 BUTTON 4 set A and select FIRST COD...

Page 125: ...thermo off heating ON ON OFF 5 T1T2 at power restore T1T2 must be open at power restore T1T2 must be identical to prior to power failure 6 Fan at thermo off cooling ON ON OFF 23 13 0 Control setting...

Page 126: ...ermo off and fan on during defrost oil return will result in fan on during thermo off 4 Hot Start During hot start fan on is carried out when Tc is A C or after B minutes Mode n Setting switch n Setti...

Page 127: ...t is off for at least C minutes refer to thermo off conditions thermostat on is carried out for at least E minutes Mode n setting Setting switch n Setting position n Setting 51 8 00 level A 1 cooling...

Page 128: ...ntrol 6 Target Refrigerant Temperature Setting 6 1 W control Cooling Te target Te zone T pipe T correction INITIAL VALUE BASE ON ZONE Adjustable by Mode n setting Setting switch n Setting position n S...

Page 129: ...chosen Correction field setting 21 2 1 2 C W control Setting Description Operation mode 01 02 03 04 Correction target Tc 21 2 0 1 2 1 Mode n setting Setting switch n Setting position n Setting Lower...

Page 130: ...stant When the DDC level remains constant for A seconds a level update is executed in the main pcb For X control Mode n setting Setting switch n Setting position n Setting Lower limit Tc C Upper limit...

Page 131: ...ntrol mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller Furthermore operations such as remote controller ON OFF can be limited i...

Page 132: ...ty setting to ON with No 29 B The low noise operation aforementioned is enabled in nighttime automatic low noise operation mode Start time Possible to select in the range of 20 00 to 24 00 hours End t...

Page 133: ...to NONE 7 Emergency operation 1 If the compressor has a failure used to prohibit the operation of compressor s concerned or outdoor unit s concerned and to conduct emergency operation of the system on...

Page 134: ...ng has not been carried out error code UA are displayed and unit can not be operated DS No Item Contents DS1 1 Cool Heat change over setting ON COOL HEAT setting is made with the use of a Cool Heat se...

Page 135: ...ail of DS1 1 4 DS2 1 4 setting for Overseas general Unit Setting method represents the position of switches HEAT PUMP 5HP ERQ 125 Set DS2 1 to ON HEAT PUMP 8HP ERQ 200 Set DS2 1 and DS2 3 to ON HEAT P...

Page 136: ...IND H3P MASTER H4P SLAVE H5P Single outdoor unit system BS1 MODE BS2 SET BS3 RETURN BS4 TEST BS5 RESET V2760 Setting mode 1 Monitor mode H1P Push the BS1 MODE button one time Blinking MODE MODE Off H...

Page 137: ...select COOL or HEAT by individual outdoor unit factory set 2 Check items The following items can be checked 1 Current operating conditions Normal Abnormal In check operation 2 Setting conditions of CO...

Page 138: ...ow noise operation in a simple way The operating time is based on Starting set and Ending set 25 Setting of external low noise level Sets low noise level when the low noise signal is input from outsid...

Page 139: ...there be any faulty part Since the comfortable environment is extremely impaired prompt replacement of the part is required 42 Emergency operation prohibition of INV compressor operation If the INV c...

Page 140: ...n Indoor forced operation 10 Defrost changeover setting Quick defrost Normal factory setting Slow defrost 12 External low noise demand setting External low noise demand NO External low noise demand YE...

Page 141: ...g About 20 00 About 22 00 factory setting About 24 00 27 Night time low noise operation end setting About 6 00 About 7 00 About 8 00 factory setting 28 Power transistor check mode OFF ON 29 Capacity p...

Page 142: ...blocks Lower 4 digits upper 13 Number of terminal blocks Lower 4 digits lower 14 Contents of malfunction the latest Malfunction code table Refer page 189 15 Contents of malfunction 1 cycle before 16...

Page 143: ...10 binary number which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the comb...

Page 144: ...for each outdoor unit system by AHU remote controller only for Z control Set cool heat separately for each outdoor unit system by cool heat selector X Y and Z control Set Cool Heat for Outdoor Unit S...

Page 145: ...SiEN09 06 A 136 Test Operation Set Cool Heat for Outdoor Unit System by Cool Heat Selector Set outdoor unit PC board DS1 1 to OUT factory set Set cool heat switching to IND individual for Setting mode...

Page 146: ...al operation mode B When the low noise operation is carried out automatically at night The external control adapter for outdoor unit is not required 1 While in Setting mode 2 select the setting condit...

Page 147: ...Field Setting ESiEN09 06 A 138 Test Operation Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B...

Page 148: ...while in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode B When the normal demand operation is carried out Use of the external c...

Page 149: ...When the Normal demand setting is set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power co...

Page 150: ...ode 2 H1P on In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights Push the BS2 SET button several times and match the LED display with the Se...

Page 151: ...1 Mode 2 Mode 3 25 External low noise setting Mode 1 Mode 2 Factory setting Mode 3 26 Night time low noise start setting PM 8 00 PM 10 00 Factory setting PM 0 00 27 Night time low noise end setting AM...

Page 152: ...ct the refrigerant using a refrigerant recovery unit See the instruction attached to the refrigerant recovery unit for more detal Press Mode button BS1 once and reset Setting Mode 2 3 2 5 Setting of V...

Page 153: ...20 sec to 2 minutes 10 minutes 5 minutes Cooling start control Step 2 Stability waiting operation Step 3 Pump down residual operation Step 9 5 minutes Standby for restarting Completion Step 10 Stop v...

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