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21 Troubleshooting

Installation and operation manual

REMA5+REYA8~20A7Y1B

VRV 5 heat recovery

4P684060-1 – 2022.02

Main
code

Sub code

Cause

Solution

SVEO

(a)

SVS

(b)

Master

Slave 1

Low pressure malfunction:

▪ Stop valve closed

▪ Refrigerant shortage

▪ Indoor unit malfunction

▪ Open stop valves.

▪ Check refrigerant recharge unit.

▪ Check the user interface's display or

transmission wiring between the outdoor
unit and the indoor unit.

Electronic expansion valve malfunction
(upper heat exchanger) (Y1E) – main PCB
(X21A)

Check connection on PCB or actuator.

Electronic expansion valve malfunction
(inverter cooling) (Y5E) – main PCB (X23A)

Check connection on PCB or actuator.

Electronic expansion valve malfunction
(lower heat exchanger) (Y3E) – main PCB
(X22A)

Check connection on PCB or actuator

Electronic expansion valve malfunction
(receiver gas) (Y4E) – main PCB (X25A)

Check connection on PCB or actuator.

Electronic expansion valve malfunction
(subcool heat exchanger) (Y2E) – main PCB
(X26A)

Check connection on PCB or actuator.

Discharge temperature too high (R21T) –
main PCB (X33A):

▪ Stop valve closed

▪ Refrigerant shortage

▪ Open stop valves.

▪ Check refrigerant recharge unit.

Compressor casing temperature too high
(R15T) – main PCB (X33A):

▪ Stop valve closed

▪ Refrigerant shortage

▪ Open stop valves.

▪ Check refrigerant recharge unit.

▪ Refrigerant overcharge

▪ Stop valve closed

▪ Check refrigerant recharge unit.

▪ Open stop valves.

Ambient temperature sensor malfunction
(R1T) – main PCB (X18A)

Check connection on PCB or actuator.

Discharge temperature sensor malfunction
(R21T): open circuit – main PCB (X33A)

Check connection on PCB or actuator.

Discharge temperature sensor malfunction
(R21T): short circuit - main PCB (X33A)

Check connection on PCB or actuator.

Compressor casing temperature sensor
malfunction (R15T): open circuit - main PCB
(X33A)

Check connection on PCB or actuator.

Compressor casing temperature sensor
malfunction (R15T): short circuit - main PCB
(X33A)

Check connection on PCB or actuator.

Suction compressor temperature sensor
(R12T) – sub PCB (X35A)

Check connection on PCB or actuator.

Suction temperature sensor (R10T) – main
PCB (X29A)

Check connection on PCB or actuator.

Heat exchanger deicer temperature sensor
(R11T) – sub PCB (X35A)

Check connection on PCB or actuator

Upper heat exchanger – gas - temperature
sensor (R8T) – main PCB (X29A)

Check connection on PCB or actuator.

Lower heat exchanger – gas - temperature
sensor (R9T) main PCB (X29A)

Check connection on PCB or actuator.

Liquid main - temperature sensor (R3T) –
main PCB (X30A)

Check connection on PCB or actuator.

Subcool heat exchanger – liquid -
temperature sensor (R7T) - main PCB
(X30A)

Check connection on PCB or actuator.

Subcool heat exchanger – liquid -
temperature sensor (R16T) - main PCB
(X35A)

Check connection on PCB or actuator.

Содержание REMA5A7Y1B

Страница 1: ...allation and operation manual VRV 5 heat recovery English Installation and operation manual VRV 5 heat recovery REYA8A7Y1B REYA10A7Y1B REYA12A7Y1B REYA14A7Y1B REYA16A7Y1B REYA18A7Y1B REYA20A7Y1B REMA5A7Y1B ...

Страница 2: ...5 25 30 35 40 45 50 55 60 20 15 10 Lowest underground floor a m kg Amin m2 65 63 8 189 27 9 1 m kg Amin m2 150 50 6 160 54 0 170 57 4 180 60 7 189 63 8 27 9 1 190 63 8 30 10 1 200 63 8 40 13 5 50 16 8 60 20 2 70 23 6 80 27 0 90 30 3 100 33 7 110 37 1 120 40 5 130 43 9 140 47 2 1 ...

Страница 3: ...dredbama követi a z zgodnie z postanowieniami urmând prevederile 19 20 21 22 23 24 25 v skladu z določbami vastavalt nõuetele следвайки клаузите на vadovaujantis šio dokumento nuostatomis atbilstoši šādu standartu prasībām nasledovnými ustanoveniami şu standartların hükümlerine EN 60335 2 40 01 02 03 04 05 as set out in A and judged positively by B according to the Certificate C as set out in the ...

Страница 4: ...jølemedium N Innstilling av sikkerhetsanordning for trykk P bar Produksjonsnummer og produksjonsår se modellens merkeplate Suurin sallittu paine PS K bar Pienin suurin sallittu lämpötila TS TSmin Alhaisin matalapainepuolen lämpötila L C TSmax Suurinta sallittua painetta PS vastaava kyllästyslämpötila M C Kylmäaine N Varmuuspainelaitteen asetus P bar Valmistusnumero ja valmistusvuosi katso mallin n...

Страница 5: ...16 S I 2008 1597 Supply of Machinery Safety Regulations 2008 S I 2016 1091 Electromagnetic Compatibility Regulations 2016 following the provisions of BS EN 60335 2 40 as set out in A and judged positively by B according to the Certificate C as set out in the Technical Construction File D and judged positively by E Applied module F according to the Certificate G Risk category H Also refer to next p...

Страница 6: ... the maximum allowable pressure PS M C Refrigerant N Setting of pressure safety device P bar Manufacturing number and manufacturing year refer to model nameplate K L M TSmin TSmax PS N P 40 20 61 R32 40 bar C C bar Name and address of the Notified body that judged positively on compliance with the Pressure Equipment Safety Regulations Q Q HPi CEproof Ltd The Manor House Howbery Business Park Walli...

Страница 7: ... 19 8 2 17 Symptom Hot air can be felt when the indoor unit is stopped 19 9 Relocation 19 10 Disposal 19 10 1 Eco Design requirements 19 For the installer 20 11 About the box 20 11 1 To remove the accessories from the outdoor unit 20 11 2 Accessory pipes Diameters 20 11 3 To remove the transportation stay only for 5 12 HP 20 12 About the units and options 20 12 1 About the outdoor unit 20 12 2 Sys...

Страница 8: ...ndustry and on farms or for commercial use by lay persons Documentation set This document is part of a documentation set The complete set consists of General safety precautions Safety instructions that you must read before installing Format Paper in the box of the outdoor unit Outdoor unit installation and operation manual Installation and operation instructions Format Paper in the box of the outd...

Страница 9: ...ials that are inherently resistant to corrosion or are suitably protected against corrosion WARNING Take sufficient precautions in case of refrigerant leakage If refrigerant gas leaks ventilate the area immediately Possible risks Excessive refrigerant concentrations in a closed room can lead to oxygen deficiency Toxic gas might be produced if refrigerant gas comes into contact with fire WARNING AL...

Страница 10: ... cables first before separating the earth connection The length of the conductors between the power supply stress relief and the terminal block itself MUST be as such that the current carrying wires are tautened before the earth wire is in case the power supply is pulled loose from the stress relief Commissioning see 19 Commissioning 446 CAUTION Do NOT insert fingers rods or other objects into the...

Страница 11: ...ion concerning use of the appliance in a safe way and understand the hazards involved Children SHALL NOT play with the appliance Cleaning and user maintenance SHALL NOT be made by children without supervision WARNING To prevent electrical shocks or fire Do NOT rinse the unit Do NOT operate the unit with wet hands Do NOT place any objects containing water on the unit CAUTION Do NOT place any object...

Страница 12: ... parts WARNING Before operating the unit be sure the installation has been carried out correctly by an installer Maintenance and service see 7 Maintenance and service 416 WARNING If the supply cord is damaged it MUST be replaced by the manufacturer its service agent or similarly qualified persons in order to avoid a hazard WARNING NEVER touch the air outlet or the horizontal blades while the swing...

Страница 13: ...To be effective the unit MUST be electrically powered at all times after installation except for maintenance WARNING The refrigerant inside the unit is mildly flammable but normally does NOT leak If the refrigerant leaks in the room and comes in contact with fire from a burner a heater or a cooker this may result in fire or the formation of a harmful gas Turn OFF any combustible heating devices ve...

Страница 14: ...ler Do NOT remove the front panel Some parts inside are dangerous to touch and appliance problems may happen For checking and adjusting the internal parts contact your dealer This operation manual offers a non exhaustive overview of the main functions of the system Detailed information on required actions to achieve certain functions can be found in the dedicated installation and operation manual ...

Страница 15: ...ration if the room temperature is low 20 C 6 3 2 To use the dry program To start 1 Press the operation mode selector button on the user interface several times and select program dry operation 2 Press the ON OFF button of the user interface Result The operation lamp lights up and the system starts operating 3 Press the air flow direction adjust button only for double flow multi flow corner ceiling...

Страница 16: ...all and result in injury NOTICE NEVER inspect or service the unit by yourself Ask a qualified service person to perform this work NOTICE Do NOT wipe the controller operation panel with benzine thinner chemical dust cloth etc The panel may get discoloured or the coating peeled off If it is heavily dirty soak a cloth in water diluted neutral detergent squeeze it well and wipe the panel clean Wipe it...

Страница 17: ...oming in Check if there are too many occupants in the room during cooling operation Check if the heat source of the room is excessive Check if direct sunlight enters the room Use curtains or blinds Check if the air flow angle is proper If after checking all above items it is impossible to fix the problem yourself contact your installer and state the symptoms the complete model name of the unit wit...

Страница 18: ...tom Fan operation is possible but cooling and heating do not work Immediately after the power is turned on The micro computer is getting ready to operate and is performing a communication check with all indoor units Please wait 12 minutes maximally until this process is finished 8 2 3 Symptom The fan speed does not correspond to the setting The fan speed does not change even if the fan speed adjus...

Страница 19: ...r in the outdoor unit does not stop after a short heating operation This is to prevent refrigerant from remaining in the compressor The unit will stop after 5 to 10 minutes 8 2 16 Symptom The inside of an outdoor unit is warm even when the unit has stopped This is because the crankcase heater is warming the compressor so that the compressor can start smoothly 8 2 17 Symptom Hot air can be felt whe...

Страница 20: ...6 RYYQ8 12 kg ONLY FOR RYYQ8 20 MODELS DATE AMOUNT CALCULATE THE ADDITIONAL REFRIGERANT CHARGING AMOUNT BASED ON THE FORMULA BELOW BEFORE CHARGING SHIPMENT INDICATED ON THE MACHINE NAMEPLATE AND THE ADDITIONAL AMOUNT SHOWN AS FOLLOWS WHEN RE CHARGING TOTAL AMOUNT OF REFRIGERANT CHARGE THE TOTAL OF THE AMOUNT CHARGED AT RESULT LEAK CHECK DATE AMOUNT RESULT LEAK CHECK DATE AMOUNT RESULT LEAK CHECK D...

Страница 21: ...of an R32 sensor located in the indoor unit or BS unit For more information about the SVS output see 17 8 To connect the external outputs 442 Indoor unit installation For installation of the indoor unit refer to the installation and operation manual delivered with the indoor unit For compatibility of indoor units refer to the latest version of the technical data book of this unit The total amount ...

Страница 22: ...put PCB of the indoor unit of that specific room The outdoor SVS will trigger for any R32 leak detected in the complete system For BS units and indoor units SVS is only triggered when its own R32 sensor detects a leak Note Depending on configuration the remote controller is operable in three possible modes Each mode offers different controller functionality For detailed information about setting t...

Страница 23: ...ection with the leak is now shut off from the rest of the system and the amount of refrigerant that can leak is significantly reduced Note In case 2 branch pipe ports are combined to a single branch pipe port e g FXMA200 250 they have to be considered as a single branch pipe port 13 4 To determine the charge limit 1 Determine the smallest room served per BS unit branch pipe port in order to derive...

Страница 24: ... can lead to lower minimum room area requirements Note In case multiple indoor units are connected to the same branch pipe port the sum of the connected indoor unit capacity classes needs to be equal or less than the value indicated in the table Note In case indoor units connected to the same branch pipe port are split over different rooms the area of the smallest room needs to be considered Note ...

Страница 25: ... 100 OK Ports C and D are combined and have to be considered as 1 branch pipe They only serve room 3 Using table a to find maximum capacity class of the indoor unit 250 The selected indoor unit is 200 OK 50 50 200 b a Room 1 20m Room 3 150m Room 2 42m D C B A 32 c c A D Branch pipe port A D a Outdoor unit b BS unit c Indoor branch kit refnet Room Room 32 50 200 Indoor unit capacity Example 2 VRV s...

Страница 26: ...derground floor NO Start installation Procedure to check if smallest area of lowest underground floor meets the requirements Start installation Derive maximum system charge See step 3 in above text Determine smallest room area of the lowest underground floor Change installation for this port 1 Increase area of smallest underground room OR 2 Decrease piping length by changing layout OR 3 Add additi...

Страница 27: ... m to a residential location NOTICE The installation and any maintenance requires a professional with relevant EMC experience to install any specific EMC mitigation measures defined in the user instructions 14 1 2 Additional installation site requirements of the outdoor unit in cold climates NOTICE When operating the unit in a low outdoor ambient temperature with high humidity conditions make sure...

Страница 28: ...rs Stands under the unit must be at least 100 mm wide 100 mm 100 mm NOT allowed Allowed preferred installation The height of the foundation must at least be 150 mm from the floor In heavy snowfall areas this height should be increased depending on the installation place and condition The preferred installation is on a solid longitudinal foundation steel beam frame or concrete The foundation must b...

Страница 29: ...e Pipe A is in case of multi connection the sum of the outdoor units connected upstream HP class Piping outer diameter mm Liquid pipe Suction gas pipe HP LP gas pipe 5 10 9 5 19 1 15 9 12 18 12 7 22 2 19 1 20 24 12 7 28 6 22 2 26 28 15 9 28 6 22 2 C Piping between refrigerant branch kits BS units or refrigerant branch kits and BS units Choose from the following table in accordance with the indoor ...

Страница 30: ...ndoor unit capacity index Refrigerant branch kit 200 KHRQ23M20T 200 x 290 KHRQ23M29T9 290 x 640 KHRQ23M64T 640 KHRQ23M75T Concerning refnet headers choose from the following table in accordance with the total capacity of all the indoor units connected below the refnet header Indoor unit capacity index Refrigerant branch kit 290 KHRQ23M29H 290 x 640 KHRQ23M64H 640 KHRQ23M75H For refnet joints betwe...

Страница 31: ...ical wiring through the knockout holes wrap the wiring with protective tape to prevent damage 15 2 2 To connect the refrigerant piping to the outdoor unit NOTICE Be sure to use the supplied accessory pipes when carrying out piping work in the field Be sure that the field installed piping does not touch other pipes the bottom panel or side panel Especially for the bottom and side connection be sure...

Страница 32: ...st cap to prevent aging of O ring and risk of leakage To handle the service port Always use a charge hose equipped with a valve depressor pin since the service port is a Schrader type valve After handling the service port make sure to tighten the service port cover securely For the tightening torque refer to the table below Check for refrigerant leaks after tightening the service port cover Tighte...

Страница 33: ...ing 2 21 until the outdoor unit has finished the initialisation Leak test and vacuum drying Checking the refrigerant piping involves Checking for any leakages in the refrigerant piping Performing vacuum drying to remove all moisture air or nitrogen in the refrigerant piping If there is a possibility of moisture being present in the refrigerant piping for example water may have entered the piping f...

Страница 34: ...ut and the copper flare 15 3 5 To perform vacuum drying To remove all moisture from the system proceed as follows 1 Evacuate the system for at least 2 hours to a target vacuum of 100 7 kPa 1 007 bar 5 Torr absolute 2 Check that with the vacuum pump turned off the target vacuum is maintained for at least 1 hour 3 Should you fail to reach the target vacuum within 2 hours or maintain the vacuum for 1...

Страница 35: ...ll connected indoor units are recognised see 1 10 and 1 39 in 18 1 7 Mode 1 Monitoring settings 444 NOTICE Before starting charging procedures check if the 7 segment display indication of the outdoor unit A1P PCB is as normal see 18 1 4 To access mode 1 or 2 443 If a malfunction code is present see 21 1 Solving problems based on error codes 448 NOTICE Close the front panel before any refrigerant c...

Страница 36: ...taining less than 63 8 kg refrigerant charge For factory charge refer to the unit name plate NOTICE The total refrigerant charge amount in the system MUST always be lower than 15 96 kg the number of indoor units connected downstream of BS units with a maximum of 63 8 kg Formula R X1 Ø19 1 0 23 X2 Ø15 9 0 16 X3 Ø12 7 0 10 X4 Ø9 5 0 053 X5 Ø6 4 0 020 1 04 A B C R Additional refrigerant to be charged...

Страница 37: ...Push BS3 to stop manual charging Charging is finished Fill in the amount on the additional refrigerant charge label Input the additional refrigerant amount via setting 2 14 Go to test run 16 5 To charge refrigerant To speed up the refrigerant charging process it is in case of larger systems recommended to first pre charge a portion of refrigerant through the liquid line before proceeding with the ...

Страница 38: ...tdoor unit 6 Activate setting 2 20 to start the manual additional refrigerant charge mode For details see 18 1 8 Mode 2 Field settings 444 Result The unit will start operation 7 Open valve A and charge refrigerant until the remaining determined additional refrigerant amount is added and then close valve A 8 Close valve A and press BS3 to stop the manual additional refrigerant charge mode INFORMATI...

Страница 39: ...on CAUTION See 2 Specific installer safety instructions 48 to make sure this installation complies with all safety regulations 17 1 About electrical compliance This equipment complies with EN IEC 61000 3 11 provided that the system impedance Zsys is less than or equal to Zmax at the interface point between the user s supply and the public system EN IEC 61000 3 11 European International Technical S...

Страница 40: ... Multiply the above result by 1 1 49 0 A 1 1 53 9 A so the recommended fuse capacity would be 63 A NOTICE When using residual current operated circuit breakers be sure to use a high speed type 300 mA rated residual operating current 17 3 To route and fix the transmission wiring NOTICE Sheathed and shielded cables are required for transmission wiring between outdoor unit and BS unit Transmission wi...

Страница 41: ... wiring After installing the transmission wires wrap them along with the onsite refrigerant pipes using finishing tape as shown in the illustration below d b e a d a c f a Liquid pipe b Gas pipe c High pressure low pressure gas pipe d Finishing tape e Transmission wiring F1 F2 f Insulation 17 6 To route and fix the power supply The power supply wiring can be routed from the front and left side Fix...

Страница 42: ...ance is not OK Go to the next step 2 Turn ON the power and leave it on for 6 hours Result The compressor will heat up and evaporate any refrigerant in the compressor 3 Measure the insulation resistance again 18 Configuration INFORMATION It is important that all information in this chapter is read sequentially by the installer and that the system is configured as applicable DANGER RISK OF ELECTROCU...

Страница 43: ...mly before turning on the power 18 1 4 To access mode 1 or 2 Initialisation default situation NOTICE Be sure to turn ON the power 6 hours before operation in order to have power running to the crankcase heater and to protect the compressor Turn on the power supply of the outdoor unit and all indoor units When the communication between indoor units and outdoor unit s is established and normal the 7...

Страница 44: ...on 0 Unit is currently not operating under low noise restrictions 1 Unit is currently operating under low noise restrictions 1 2 Shows the status of power consumption limitation operation 1 2 Description 0 Unit is currently not operating under power consumption limitations 1 Unit is currently operating under power consumption limitation 1 5 1 6 Code Shows 1 5 The current Te target parameter positi...

Страница 45: ...ng on the chosen level the noise level will be lowered The start and stop moments for this function are defined under setting 2 26 and 2 27 For more details about settings 2 26 and 2 27 see installer user reference guide 2 22 Description 0 default Deactivated 1 Level 1 Level 5 Level 4 Level 3 Level 2 Level 1 2 Level 2 3 Level 3 4 Level 4 5 Level 5 2 35 Height difference setting 2 35 Description 0 ...

Страница 46: ...he commissioning instructions in this chapter a general commissioning checklist is also available on the Daikin Business Portal authentication required The general commissioning checklist is complementary to the instructions in this chapter and can be used as a guideline and reporting template during the commissioning and hand over to the user After installation and once the field settings are def...

Страница 47: ...se the test run of the outdoor unit checks this confirmation for all BS units in the system See the BS unit installation and operation manual for more information NOTICE It is very important that all refrigerant piping work is done before the units outdoor BS or indoor are powered on When the units are powered on the expansion valves will initialise This means that the valves will close If any par...

Страница 48: ...carried out the outdoor unit display will indicate and the indication Centralised control and Test run will display on the indoor unit user interface s Steps during the automatic connection check procedure Step Description Check ON Precooling and preheating operations Step Description Control before start up pressure equalisation Four way valve initial control Heating start up Misconnection assess...

Страница 49: ...ore information R32 sensor malfunction in one of the indoor units c Check connection on PCB or actuator The system will continue operation but indoor unit in scope will stop operating Refer to the service manual for more information R32 sensor end of lifetime in one of the indoor units c One of the sensors is at the end of lifetime for CH 05 almost and must be replaced Refer to the service manual ...

Страница 50: ...es Check refrigerant amount recharge unit Refrigerant overcharge Stop valve closed Check refrigerant amount recharge unit Open stop valves Ambient temperature sensor malfunction R1T main PCB X18A Check connection on PCB or actuator Discharge temperature sensor malfunction R21T open circuit main PCB X33A Check connection on PCB or actuator Discharge temperature sensor malfunction R21T short circuit...

Страница 51: ...rect phase order Reversed power supply phase malfunction Correct phase order INV1 voltage power shortage Check if power supply is within range INV1 power phase loss Check if power supply is within range Malfunction code system test run not yet executed system operation not possible Execute system test run An error occurred during the test run Re execute the test run Test run aborted Re execute the...

Страница 52: ...the alarm only and supervisor remote controller have no functionality The screen of the remote controller in alarm only and supervisor mode will be off Operation of the remote controller can be checked by pushing the button to open the installer menu c a d e f d c c d e g h b a Heat recovery outdoor unit b Branch selector BS c Refrigerant piping d VRV direct expansion DX indoor unit e Remote contr...

Страница 53: ...te iTM and WAGO module can also be connected to generate an output signal in case of leak detection E g it can be used at a supervised location Please refer to installation manual of the iTM for further details NOTICE The R32 refrigerant leakage sensor is a semiconductor detector which may incorrectly detect substances other than R32 refrigerant Avoid using chemical substances e g organic solvents...

Страница 54: ... 4 Refer to the installation manual for connection wiring to indoor outdoor transmission F1 F2 and outdoor multi transmission Q1 Q2 5 When using the central control system connect outdoor outdoor transmission F1 F2 6 The capacity of the contact is 220 240V AC 0 5 A rush current needs 3 A or less 7 Use dry contact for micro current 10 mA or less 15 V DC 8 When using the optional adapter refer to th...

Страница 55: ...Electronic expansion valve inverter cooling Y7E 14 20 HP only Electronic expansion valve liquid injection Y2S Solenoid valve liquid pipe Y3S Solenoid valve high pressure low pressure gas pipe Y4S Solenoid valve heat exchanger lower Y5S Solenoid valve heat exchanger upper Y8S 5 12 HP only Solenoid valve gas injection Y10S Solenoid valve accu oil return Y11S Solenoid valve M1C oil return Y13S Error ...

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