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Table of Contents
Troubleshooting
Related Manuals for Daikin VRV IV+ RXYTQ8U5/U7YF
Summary of Contents for Daikin VRV IV+ RXYTQ8U5/U7YF
- Page 1 Installation and operation manual VRV IV+ heat pump for high ambient temperatures RXYTQ8U5/U7YF RXYTQ10U5/U7YF RXYTQ12U5/U7YF Installation and operation manual RXYTQ14U5/U7YF English VRV IV+ heat pump for high ambient temperatures RXYTQ16U5/U7YF...
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Page 2: Table Of Contents
Table of contents 8.2.15 Symptom: The display shows "88"....... 12 Table of contents 8.2.16 Symptom: The compressor in the outdoor unit does not stop after a short heating operation ....... 12 8.2.17 Symptom: The inside of an outdoor unit is warm even when the unit has stopped ........ - Page 3 About making field settings ......... 28 Daikin website (publicly accessible). 16.1.2 Field setting components ..........29 ▪ The full set of latest technical data is available on the Daikin 16.1.3 To access the field setting components...... 29 Business Portal (authentication required).
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Page 4: For The User
3 User safety instructions WARNING WARNING Any gas or oil remaining inside the stop valve may blow off ▪ All wiring MUST be performed by an authorised the spun piping. electrician and MUST comply with the applicable legislation. If these instructions are NOT followed correctly it may result in property damage or personal injury, which may be ▪... -
Page 5: Instructions For Safe Operation
3 User safety instructions concerning use of the appliance in a Instructions for safe operation safe way and understand the hazards CAUTION involved. ▪ NEVER touch the internal parts of the Children SHALL NOT play with the controller. appliance. ▪ Do NOT remove the front panel. Cleaning and user maintenance Some parts inside are dangerous to SHALL NOT be made by children... -
Page 6: About The System
4 About the system CAUTION: Pay attention to the fan! WARNING It is dangerous to inspect the unit while The refrigerant in the system is safe the fan is running. and normally does not leak. If the refrigerant leaks in the room, contact Make sure to turn OFF the main switch with a fire of a burner, a heater or a before executing any maintenance... -
Page 7: Operating The System
6 Operation 6.2.4 To operate the system (WITHOUT cool/ Cooling Heating heat changeover remote control switch) Outdoor temperature –5~52°C DB –20~21°C DB –20~15.5°C WB 1 Press the operation mode selector button on the user interface several times and select the operation mode of your choice. Indoor temperature 21~32°C DB 15~27°C DB... -
Page 8: Using The Dry Program
6 Operation Using the dry program NOTICE Do not turn off power immediately after the unit stops, but wait for at least 5 minutes. 6.3.1 About the dry program ▪ The function of this program is to decrease the humidity in your Adjusting the air flow direction room with minimal temperature decrease (minimal room cooling). -
Page 9: Maintenance And Service
7 Maintenance and service 7.2.2 Recommended maintenance and Maintenance and service inspection NOTICE Since dust collects when using the unit for several years, NEVER inspect or service the unit by yourself. Ask a performance of the unit will deteriorate to some extent. As taking qualified service person to perform this work. -
Page 10: Error Codes: Overview
8 Troubleshooting Malfunction Measure Main code Contents If the system does not ▪ Check if there is no power failure. Wait Transmission malfunction between main PCB and sub operate at all. until power is restored. If power failure PCB (indoor) occurs during operation, the system Heat exchanger thermistor malfunction (indoor;... - Page 11 8 Troubleshooting 8.2.5 Symptom: The fan direction does not Main code Contents correspond to the setting Abnormal user interface - indoor communication Faulty wiring to outdoor/outdoor The fan direction does not correspond with the user interface Abnormal main-sub user interface communication display.
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Page 12: Symptom: Dust Comes Out Of The Unit
About Gas pipe 25.4 19.1 22.2 ▪ Front connection is part of Daikin's wider commitment to reduce our ID Øa 28.6 environmental footprint. With we want to create a circular ID Øb economy for refrigerants. One of the actions to achieve this, is the reuse of reclaimed refrigerant in VRV units produced and sold in Europe. -
Page 13: 12 About The Units And Options
12 About the units and options NOTICE If the unit is operated with the transportation stay attached, abnormal vibration or noise may be generated. The transportation stay installed over the compressor leg for protecting the unit during transport must be removed. Proceed as shown in the figure and procedure below. -
Page 14: Mounting The Outdoor Unit
14 Piping installation 8 HP ≥AB 2× (mm) 10~16 HP Minimum foundation Anchor point (4×) 10~16 1076 1302 6× ▪ Fasten the unit in place using four foundation bolts M12. It is best to screw in the foundation bolts until their length remains 20 mm above the foundation surface. -
Page 15: To Select The Piping Size
14 Piping installation E: Piping between refrigerant branch kit and Pipe Ø Temper grade of piping material indoor unit ≤15.9 mm O (annealed) ≥19.1 mm 1/2H (half hard) Pipe size for direct connection to indoor unit must be the same as the connection size of the indoor unit (in case indoor unit is VRV DX ▪... -
Page 16: To Select Refrigerant Branch Kits
14 Piping installation ▪ In case the required pipe sizes (inch sizes) are not available, it is Pattern 1 Pattern 2 also allowed to use other diameters (mm sizes), taken the following into account: ▪ Select the pipe size nearest to the required size. ▪... -
Page 17: Connecting The Refrigerant Piping
14 Piping installation Then NOTICE >2 m >2 m >2 m Precautions when making knockout holes: ▪ Avoid damaging the casing. ▪ After making the knockout holes, we recommend you remove the burrs and paint the edges and areas around the edges using repair paint to prevent rusting. ≤2 m ≤2 m ▪... -
Page 18: To Protect Against Contamination
14 Piping installation ▪ Mount the refnet joint so that it branches either horizontally or NOTICE vertically. Pay attention that mentioned torque range is applicable for ▪ Mount the refnet header so that it branches horizontally. opening Ø19.1~Ø25.4 mm stop valves only. To close the stop valve 1 Remove the stop valve cover. -
Page 19: To Remove The Spun Pipes
14 Piping installation 14.2.7 To remove the spun pipes WARNING WARNING Any gas or oil remaining inside the stop valve may blow off the spun piping. If these instructions are NOT followed correctly it may result in property damage or personal injury, which may be NEVER remove the spun piping by brazing. -
Page 20: Checking Refrigerant Piping: General Guidelines
14 Piping installation ▪ Performing vacuum drying to remove all moisture, air or nitrogen NOTICE in the refrigerant piping. The connections to the indoor units and all indoor units If there is a possibility of moisture being present in the refrigerant should also be leak and vacuum tested. -
Page 21: Charging Refrigerant
14 Piping installation ▪ Make sure to insulate the connection piping and refrigerant branch NOTICE kits entirely. Before starting charging procedures, check ▪ Be sure to insulate the liquid and gas piping (for all units). 7‑segment display indication of the outdoor unit A1P PCB 2" ... - Page 22 14 Piping installation Piping length 8 HP 10+12 HP 14+16 HP >30 m 50%≤CR≤70% 0 kg 1 kg 70%<CR≤85% 0.3 kg 0.5 kg 1.5 kg 85%<CR≤105% 0.7 kg 1 kg 2 kg 105%<CR≤130% 1.2 kg 1.5 kg Piping length is considered the distance from the outdoor unit to the farthest indoor unit. Total CR = Total indoor unit capacity connection ratio In case of a multi-outdoor-unit system, add the sum of the individual outdoor unit charge factors.
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Page 23: To Charge Refrigerant: Flow Chart
14 Piping installation 14.4.4 To charge refrigerant: Flow chart refrigerant" [ 4 24]. For more information, see "14.4.5 To charge Pre-charging refrigerant Step 1 p < p > Calculate additional refrigerant charge amount: R (kg) Step 2 R410A • Open valves C and B to the liquid line •... -
Page 24: To Charge Refrigerant
14 Piping installation Charging refrigerant << Continuation of previous page R>Q Step 4 p < p > • Connect valve A to the refrigerant charge port (d) • Open all outdoor unit stop valves R410A Step 5 Proceed with manual charge Step 6 Activate field setting [2-20]=1 Unit will start manual refrigerant charging operation. -
Page 25: Step 6: To Manually Charge Refrigerant
14 Piping installation INFORMATION INFORMATION If the total additional refrigerant amount was reached in ▪ When a malfunction is detected during the procedure step 3 (by pre-charging only), record the amount of (e.g., in case of closed stop valve), a malfunction code refrigerant that was added on the additional refrigerant will be displayed. -
Page 26: 15 Electrical Installation
15 Electrical installation ▪ DIII transmission wiring between communication box and outdoor Electrical installation unit, ▪ RS‑485 transmission wiring between communication box and DANGER: RISK OF ELECTROCUTION monitoring system. Example: WARNING ALWAYS use multicore cable for power supply cables. NOTICE This is a class A product. -
Page 27: To Connect The Transmission Wiring
15 Electrical installation Knockout hole has to be removed. Close the hole to avoid In case of multi outdoor unit installation small animals or dirt from entering. 8 HP 10~16 HP F1 F2 F1 F2 Q1 Q2 Q1 Q2 Q1 Q2 Unit A (master outdoor unit) Unit B (slave outdoor unit) Unit C (slave outdoor unit) -
Page 28: To Connect The Power Supply
16 Configuration 8 HP 10~16 HP When connecting the earth wire, it is recommended to perform curling. Multiple outdoor units To connect the power supply for multiple outdoor units to each other, ring tongues have to be used. No bare cable can be used. In that case, the ring washer that is installed by default should be removed. -
Page 29: Field Setting Components
16 Configuration Mode 1 and 2 Front plate Main PCB with 3 7‑segment displays and 3 push buttons Mode Description Electrical component box service cover Mode 1 Mode 1 can be used to monitor the current Operate the switches and push buttons with an insulated stick (such situation of the outdoor unit. -
Page 30: To Use Mode 1
16 Configuration Access Action [1‑0] Description Mode 2 Push BS1 for at least 5 seconds. No indication Undefined situation. Outdoor unit is master unit. 7‑segment display indication changes to: Outdoor unit is slave 1 unit. Outdoor unit is slave 2 unit. Push BS1 one more time (shortly) to return to [1‑1] the default situation. -
Page 31: To Connect The Pc Configurator To The Outdoor Unit
General commissioning checklist. Next target temperature during cooling operation. commissioning instructions in this chapter, a general commissioning checklist is also available on the Daikin [2‑8] target (°C) Business Portal (authentication required). 0 (default) Auto The general commissioning checklist is complementary to... -
Page 32: About The Test Run
17 Commissioning Fuses, circuit breakers, or protection devices INFORMATION Check that the fuses, circuit breakers, or the locally ▪ It may take 10 minutes to achieve a uniform refrigerant installed protection devices are of the size and type state before the compressor starts. specified chapter "15.1 ... -
Page 33: Correcting After Abnormal Completion Of The Test Run
18 Hand-over to the user 17.5 Correcting after abnormal Troubleshooting completion of the test run 19.1 Solving problems based on error The test operation is only completed if there is no malfunction code displayed on the user interface or outdoor unit 7‑segment display. In codes case of a displayed malfunction code, perform correcting actions as explained in the malfunction code table. - Page 34 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Discharge temperature too high ▪ Open stop valves. (R21T/R22T): ▪ Check refrigerant amount+recharge ▪ Stop valve closed unit. ▪ Refrigerant shortage Compressor casing temperature too ▪ Open stop valves. high (R8T/R9T): ▪...
- Page 35 19 Troubleshooting Main code Sub code Cause Solution Master Slave 1 Slave 2 Transmission outdoor unit - inverter: Check connection. INV1 transmission trouble - A1P (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection. FAN1 transmission trouble - A1P (X20A, X28A, X40A) Transmission outdoor unit - inverter: Check connection.
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Page 36: 20 Technical Data
Technical data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin Business Portal (authentication required). 20.1 Service space: Outdoor unit... - Page 37 20 Technical data Layout A+B+C+D Possibility 1 Possibility 2 a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm a≥10 mm a≥50 mm a≥200 mm b≥300 mm b≥100 mm b≥300 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm e≥20 mm e≥100 mm e≥400 mm a≥10 mm a≥50 mm — b≥300 mm b≥100 mm c≥10 mm c≥50 mm d≥500 mm d≥500 mm e≥20 mm e≥100 mm...
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Page 38: Piping Diagram: Outdoor Unit
20 Technical data Compressor Solenoid valve, 20.2 Piping diagram: Outdoor unit (M2C) oil1 (Y3S) Heat exchanger Solenoid valve, Piping diagram: RXYTQ8 oil2 (Y4S) 4‑way valve, main (Y1S) Fan motor (M1F, 4‑way valve, sub M2F) (Y5S) Accumulator Electrical component box Expansion valve, Service port, main (Y1E) refrigerant charge... - Page 39 20 Technical data F101U Fuse INFORMATION (A4P) The wiring diagram on the outdoor unit is only for the F401U, Fuse outdoor unit. For the indoor unit or optional electrical F403U components, refer to the wiring diagram of the indoor unit. (A2P) This wiring diagram applies only to the outdoor unit.
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Page 40: 21 Disposal
21 Disposal Connectors for optional accessories: R8T, R9T Thermistor (M1C, M2C body) X10A Connector (drainpan heater) R21T, R22T Thermistor (M1C, M2C discharge) X37A Connector (power adapter) S1NPH Pressure sensor (high) X66A Connector (remote switching COOL/HEAT selector) S1NPL Pressure sensor (low) S1PH, Pressure switch (discharge) Legend for wiring diagram 14~20 HP:... - Page 44 4P546223-1 C 0000000. 4P546223-1C 2021.11 Verantwortung für Energie und Umwelt...