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10 Troubleshooting

Installation manual

RWEQ96~432TAYD

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+ RWEQ96~432TATJ

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VRV W T-Series water-cooled system air conditioner

10 .3

Error codes: Overview

Malfunction code

Contents

Solution

Main

code

Sub code

Master/sub 1/sub 2

01/03/05

▪ High pressure switch is activated.

(S1PH)-A1P (X3A)

▪ High pressure switch connectors are detached.

-A1P (X3A)

▪ Check stop valves situation or abnormalities in

(field) piping or waterflow.

▪

Securely connect each connector. Refer to the wiring

diagram attached to the back of the control box cover.

02/04/06

▪ Stop valves are closed.

▪ Refrigerant overcharge.

▪ Open stop valves.

▪ Check refrigerant amount and recharge.

01/02/03

Low pressure malfunction:

▪ Stop valves are closed.

▪ Refrigerant shortage.

▪ Indoor unit malfunction

▪ Open stop valves.

▪ Check refrigerant amount and recharge.

▪

Check the user interface’s display or transmission

wiring between the outside unit and the indoor unit.

01/05/08

Electronic expansion valve malfunction

(Y1E)-A1P (X21A)

Check connection on printed circuit board or actuator.

03/06/09

Electronic expansion valve malfunction

(Y2E)-A1P (X22A)

Check connection on printed circuit board or actuator.

04/07/10

Electronic expansion valve malfunction

(Y3E)-A1P (X25A)

Check connection on printed circuit board or actuator.

01/03/05

Discharge temperature too high (R12T):

▪ Stop valves are closed.

▪

Refrigerant shortage.

▪

Open stop valves.

▪

Check refrigerant amount and recharge.

20/21/22

Compressor casing temperature too high (R13T):

▪

Stop valves are closed.

▪

Refrigerant shortage.

▪

Open stop valves.

▪

Check refrigerant amount and recharge.

▪

Stop valves are closed.

▪

Refrigerant overcharge.

▪

Open stop valves.

▪

Check refrigerant amount and recharge.

01/02/03

Temperature sensor malfunction

(R1T)-A4P (X11A)

Check connection on printed circuit board or actuator.

01/02/03

Water system malfunction

▪ Check water pump and waterflow.

▪ Check flow switch interlock connection (X2M

terminals 5, 6).

16/22/28

17/23/29

56/57/58

Temperature sensor malfunction

(R12T)-A1P (X19A)

Check connection on printed circuit board or actuator.

47/49/51

48/50/52

Temperature sensor malfunction

(R13T)-A1P (X19A)

Check connection on printed circuit board or actuator.

01/03/05

Temperature sensor malfunction

(R3T)-A1P (X30A)

Check connection on printed circuit board or actuator.

01/02/03

Temperature sensor malfunction

(R7T)-A1P (X30A)

Check connection on printed circuit board or actuator.

01/02/03

Temperature sensor malfunction

(R6T)-A1P (X30A)

Check connection on printed circuit board or actuator.

06/07/08

Temperature sensor malfunction

(R8T)-A1P (X29A)

Check connection on printed circuit board or actuator.

18/19/20

Temperature sensor malfunction

(R11T)-A1P (X18A)

Check connection on printed circuit board or actuator.

01/02/03

Temperature sensor malfunction

(R5T)-A1P (X30A)

Check connection on printed circuit board or actuator.

17/18/19

Temperature sensor malfunction

(R2T)-A4P (X12A)

Check connection on printed circuit board or actuator.

01/02/03

High pressure sensor malfunction

(S1NPH)-A1P (X32A)

Check connection on printed circuit board or actuator.

01/02/03

Low pressure sensor malfunction

(S1NPL)-A1P (X31A)

Check connection on printed circuit board or actuator.

01/06/08

Transmission trouble.

A3P (X6A)-A1P (X28A)

Check connection.

01/02/03

Unbalanced power supply voltage.

Check if power supply is within the range.

01/05/07

No power supplied to outside unit or indoor unit

(Reverse phase/open phase).

Check if the power supply wiring for the outside unit

or indoor unit is correctly connected, and correct if

necessary.

01_EN_4P602454-1C.indd 47

2020/07/29 16:16:54

Содержание RWEQ96TAYD Series

Страница 1: ...these instructions carefully before installation Keep this manual in a handy place for future reference This manual should be left with the equipment owner Please visit http www daikinac com com resou...

Страница 2: ...frigerant piping General guidelines 24 5 4 3 Checking refrigerant piping Setup 24 5 4 4 Air tight test and vacuum drying 25 5 5 To insulate the refrigerant piping 25 5 6 Charging refrigerant 26 5 6 1...

Страница 3: ...stallation could result in water leakage electric shock or fire When installing the unit in a small room take measures to keep the refrigerant concentration from exceeding allowable safety limits Exce...

Страница 4: ...disturb the operation of the control system and cause the unit to malfunction d Where flammable gas may leak where there is carbon fiber or ignitable dust suspension in the air or where volatile flamm...

Страница 5: ...amage the unit when removing the shrink foil with a cutter Remove the 4 bolts fixing the unit to its pallet WARNING Tear apart and throw away plastic packaging bags so that nobody especially children...

Страница 6: ...0 21 1 80 26 7 90 32 2 100 37 8 110 43 3 120 48 9 60 15 6 50 10 70 21 1 80 26 7 90 32 2 In case of antifreeze usage Cooling Heating 20 6 7 60 15 6 70 21 1 80 26 7 90 32 2 100 37 8 110 43 3 120 48 9 10...

Страница 7: ...tion Certain features have exclusive model rights These units are intended for indoor installation and aimed for heat pump applications including water to air The normal operating water inlet temperat...

Страница 8: ...ple outside units Type Max connection ratio Types of connected indoor units When using only FXDQ FXMQ P FXAQ FXSQ07 54T When using at least one FXFQ07 09 FXZQ05T FXSQ05T All other models Single outsid...

Страница 9: ...uter interface For this option 999482P3 is required which is a dedicated cable to communicate with the outside unit 4 Preparation 4 1 Overview Preparation This chapter describes what you have to do an...

Страница 10: ...About safety against refrigerant leaks The installer and system specialist shall secure safety against leakage according to local regulations or standards The following standards may be applicable if...

Страница 11: ...age the refrigerant oil Use only pipes which are clean inside and outside and which do not accumulate harmful sulfur oxidants dirt cutting oils moisture or other contamination Foreign materials inside...

Страница 12: ...30 x 300 1 3 8 34 9 3 4 19 1 300 1 5 8 41 3 In case of heat recovery mode Unit inch mm Indoor unit capacity index Piping outer diameter size Suction gas pipe High pressure low pressure gas pipe Liquid...

Страница 13: ...standard outside unit combinations Definitions Term Definition Actual piping length Pipe length between outside a and indoor units Equivalent piping length Pipe length between outside a and indoor uni...

Страница 14: ...indoor units where difference from the indoor unit nearest to the outside unit is more than 130 ft 40 m please size up according to 4 3 7 Piping length requirements on page 15 c In the case of an outs...

Страница 15: ...outside units exceeds 6 5 ft 2 m create a rise of 8 inch 200 mm or more in the suction gas and high low pressure gas line within a length of 6 5 ft 2 m from the kit For the gas piping both discharge...

Страница 16: ...00 m If size exceeds the main pipe size due to size increase please also size up main pipe according to 4 3 2 To select the piping size on page 11 4 4 Preparing water piping 4 4 1 Water quality requir...

Страница 17: ...1 4 11 5NPT Tighten securely the connection of water piping and socket with tightening torque of 220 ft lbf 300 N m or less If a large torque is applied the unit may be damaged Example 3 15 inch 80 m...

Страница 18: ...flow rate through the unit To activate the variable flow system change field setting 2 24 to the applicable value See 7 2 Making field settings on page 36 NOTE Make sure that all field supplied equip...

Страница 19: ...5 36 5 A 45 45 45 A RWEQ384TATJ 36 5 36 5 44 6 A 45 45 50 A RWEQ408TATJ 36 5 44 6 44 6 A 45 50 50 A RWEQ432TATJ 44 6 44 6 44 6 A 50 50 50 A RWEQ96TAYD 13 A 15 A RWEQ120TAYD 16 5 A 20 A RWEQ144TAYD 20...

Страница 20: ...rigerant 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 may be produced if...

Страница 21: ...he responsibility of the installer field piping 5 3 5 Multi connection piping kit connection NOTE Improper installation may lead to malfunction of the outside unit Install the joints horizontally so t...

Страница 22: ...break equipment Do NOT use flux when brazing copper to copper refrigerant piping Use phosphor copper brazing filler alloy BCuP which does not require flux Flux has an extremely harmful influence on r...

Страница 23: ...ARNING Any gas or oil remaining inside the stop valve may blow off the pinched piping Failure to observe the instructions in procedure below properly may result in property damage or personal injury w...

Страница 24: ...ing 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 refr...

Страница 25: ...to 550 psi 3 8 MPa do not pressurize more than 550 psi 3 8 MPa If the pressure does not drop within 24 hours the system passes the test If there is a pressure drop check for leaks make repairs and per...

Страница 26: ...the following stages 1 Determining how much you have to charge additionally 2 Charging additional refrigerant pre charging and or charging 5 6 3 To determine the additional refrigerant amount NOTE The...

Страница 27: ...NFORMATION Piping length is considered by the distance from the outside unit to the farthest indoor unit Parameter C Indoor unit capacity type FXMQ type 07 09 12 15 18 24 30 36 48 54 Refrigerant amoun...

Страница 28: ...5 ft Total capacity of indoor unit 104 5 Branch Selector units BS4Q54T 1 BSQ60T 1 BSQ96T 1 Indoor units FXMQ type 18 1 24 2 36 1 54 1 FXFQ type 36 2 Other 48 1 Liquid piping a 3 4 60 ft e 1 4 15 ft i...

Страница 29: ...dditional refrigerant charge label provided with the unit and attach it on the back side of the front panel Perform the test procedure as described in 8 Commissioning on page 42 Charging refrigerant 5...

Страница 30: ...verage subcooling 4 9 2 7 7 2 4 0 9 9 5 5 4 9 2 7 6 1 3 4 7 2 4 0 8 6 4 8 Capacity index 288 312 336 360 384 408 432 Average subcooling 9 9 5 5 7 6 4 2 6 5 3 6 7 2 4 0 8 3 4 6 9 2 5 1 9 9 5 5 a If ave...

Страница 31: ...ower supply shared by another appliance Make sure to install the required fuses or circuit breakers Install power cables at least 10 ft 3 m away from televisions or radios to prevent interference Depe...

Страница 32: ...be routed in conduit Be sure to follow the limits below If the unit to unit cables are beyond these limits it may result in malfunction of transmission Description Limitation Maximum wiring length 32...

Страница 33: ...anch selector unit i Indoor unit j Cooling only VRV indoor unit In case of heat pump mode F1 F1 F2 F2 Q1 Q2 TO IN D UNIT TO OUT D UNIT TO MULTI UNIT F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 Q1Q...

Страница 34: ...b Fuse or circuit breaker c Ground wire d Power supply terminal block e Connect each power wire RED to L1 WHT to L2 and BLK to L3 f Ground wire GRN YLW When connecting the ground wire it is recommende...

Страница 35: ...lay accordingly Failure to do so will result in unintended forced thermo off conditions NOTE In case of two or more flow switches installed with field setting 2 24 3 activated see 7 2 8 Mode 2 Field s...

Страница 36: ...figure You can see the three push buttons and the three 7 segment displays and DIP switches a b c a Switch box cover b Main PCB with 3 7 segment displays and 3 push buttons c Access cover Operate the...

Страница 37: ...g in mode 2 Once mode 2 is selected push BS1 for more than 5 seconds you can select the desired setting It is done by pushing BS2 Accessing the selected setting s value is done by pushing BS3 1 time T...

Страница 38: ...error codes on page 46 where most relevant malfunction codes are explained Detailed information about malfunction codes can be consulted in the service manual of this unit 7 2 8 Mode 2 Field settings...

Страница 39: ...nits remain ON when secondary units are OFF 2 Water pump valve control is OFF or one pump valve per system 3 One pump valve per module pump valve on secondary units are OFF when secondary units are OF...

Страница 40: ...perature during heat recovery operation 2 47 Te target 0 default Auto 1 37 4 F 3 C 2 42 8 F 6 C 3 44 6 F 7 C 4 46 4 F 8 C 5 48 2 F 9 C 6 50 F 10 C 7 51 8 F 11 C 2 50 Antifreeze type setting By changin...

Страница 41: ...2 3 2 74 Heat rejection cancellation setting temperature If the unit internal temperature is higher than the zero energy dissipation setting temperature the zero energy dissipation control will start...

Страница 42: ...verter PCB abnormality L3 Reactor temperature rise abnormality L4 Inverter radiation fin temperature rise abnormality L5 Inverter compressor instantaneous overcurrent L8 Inverter compressor overcurren...

Страница 43: ...id and gas side Damaged equipment Check the inside of the unit on damaged components or squeezed pipes Refrigerant leak Check the inside of the unit on refrigerant leakage If there is a refrigerant le...

Страница 44: ...est run on page 44 to take actions for correcting the abnormality When the test operation is fully completed normal operation will be possible after 5 minutes 8 6 Correcting after abnormal completion...

Страница 45: ...n 3 Steps to be taken if a freeze protection device is activated If the freeze protection device is activated during operation be sure to remove the cause before restarting the operation If the freeze...

Страница 46: ...y 9 4 1 To use vacuum mode 1 When the unit is at standstill set the unit in 2 21 1 Result When confirmed the indoor and outside unit expansion valves will fully open At that moment the 7 segment displ...

Страница 47: ...perature sensor malfunction R1T A4P X11A Check connection on printed circuit board or actuator HJ 01 02 03 Water system malfunction Check water pump and waterflow Check flow switch interlock connectio...

Страница 48: ...U9 01 System mismatch Wrong type of indoor units combined R407C Mini split etc Indoor unit malfunction Check if other indoor units have malfunction and confirm indoor unit mix is allowed UA 18 Connec...

Страница 49: ...dequate for servicing and the minimum space for ventilation is available refer to the figure below a a b b b b 1 c c b b F d 2 a 19 11 16 inch 500 mm b 13 16 inch 20 mm c 35 7 16 inch 900 mm d 11 13 1...

Страница 50: ...vice port 0 32 inch flare connection C Cooling water inlet D Cooling water outlet Charge port Service port Filter Check valve Pressure relief valve Solenoid valve Capillary tube Electronic expansion v...

Страница 51: ...1 2 t PS K3R M2F M1F M3F DS1 DS2 E1HC 7 8 9 10 4 2 3 1 X1M Note 2 X1A C B A X2M Note 2 X20A X37A 2 1 2 1 PS Q1DI 1 2 3 4 5 6 7 8 9 10 Z1F Y9S t A B C Power supply water control output Power supply 12...

Страница 52: ...4 2 3 1 X1A X1M Note 2 C B A A B C t t t Z1F PS Z1F X3A X1A 1 2 F1S K1R X2A X3M MS 3 V1R Y9S X15A DS1 DS2 U U U E U Cool Heat Air control Cool heat selector Control box Fan Power supply water control...

Страница 53: ...4P602454 1C 2020 08 Daikin Texas Technology Park 19001 Kermier Road Waller TX 77484 U S A 00_CV_4P602454 1C indd 2 2020 07 30 14 32 15...

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