To connect optional accessories (wired user interface, central user interface, etc.) ........... 42 9 Finishing the indoor unit installation To insulate the drain piping, refrigerant piping and interconnection cable..............43 Installer reference guide FTXJ-A(W)(S)(B) Daikin room air conditioner 4P518023-12K – 2022.05...
Page 3
13 Troubleshooting 13.1 Solving problems based on error codes ......................... 51 14 Disposal 15 Technical data 15.1 Wiring diagram................................55 15.1.1 Unified wiring diagram legend ........................55 16 Glossary FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
The original documentation is written in English. All other languages are translations. Technical engineering 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).
Symbols used in the documentation: Symbol Explanation Indicates a figure title or a reference to it. Example: " 1–3 Figure title" means "Figure 3 in chapter 1". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 6
About the documentation Symbol Explanation Indicates a table title or a reference to it. Example: " 1–3 Table title" means "Table 3 in chapter 1". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Improper installation or attachment of equipment or accessories could result in electrical shock, short-circuit, leaks, fire or other damage to the equipment. ONLY use accessories, optional equipment and spare parts made or approved by Daikin. WARNING Make sure installation, testing and applied materials comply with applicable legislation (on top of the instructions described in the Daikin documentation).
WARNING Make sure installation, servicing, maintenance and repair comply with instructions from Daikin and with applicable legislation and are executed ONLY by authorised persons. CAUTION Do NOT use potential sources of ignition in searching for or detection of refrigerant leaks.
Page 9
Keep the pipework installation to a minimum. To determine the minimum floor area 1 Determine the total refrigerant charge in the system (= factory refrigerant charge additional refrigerant amount charged). FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 10
9.55 m Total refrigerant charge in the system Minimum floor area (a) Ceiling-mounted unit (= Ceiling-mounted unit) (b) Wall-mounted unit (= Wall-mounted unit) (c) Floor-standing unit (= Floor-standing unit) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Make sure refrigerant piping installation complies with applicable legislation. In Europe, EN378 is the applicable standard. NOTICE Make sure the field piping and connections are NOT subjected to stress. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
If NOT factory installed, a main switch or other means for disconnection, having a contact separation in all poles providing full disconnection under overvoltage category III condition, MUST be installed in the fixed wiring. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 13
Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small head will damage the head and make proper tightening impossible. ▪ Over-tightening the terminal screws may break them. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 14
ON and OFF while the product is operating, attach a reversed phase protection circuit locally. Running the product in reversed phase can break the compressor and other parts. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
All wiring MUST be performed by an authorised electrician and MUST comply with the applicable legislation. ▪ Make electrical connections to the fixed wiring. ▪ All components procured on-site and all electrical construction MUST comply with the applicable legislation. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 16
Do NOT branch the power supply for the drain pump, etc. from the terminal block. This could result in electrical shock or fire. WARNING Keep the interconnection wiring away from copper pipes without thermal insulation as such pipes will be very hot. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
1× 2× 2× 2× 1× 1× 2× 1× a Installation manual b Operation manual c General safety precautions d Titanium apatite deodorising filter and silver particle filter (Ag-ion filter) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 18
Spare SSID sticker. Do NOT throw away the spare sticker. Keep it in a safe place in case it is needed in future (e.g. in case the front grille was replaced attach it to the new front grille). FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
A safety device might stop the operation of the system if the unit runs outside its operation range. Condensation and water dripping might occur if the unit runs outside its operation range. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
INFORMATION: Declaration of conformity ▪ Daikin Industries Czech Republic s.r.o. declares that the radio equipment type inside of this unit is in compliance with Directive 2014/53/EU and S.I. 2017/1206: Radio Equipment Regulations 2017. ▪...
Page 21
Result: The QR code will re-direct you to the App Store or Google Play. 5 Follow the directions on the screen to install. INFORMATION If the QR code is difficult to read, switch the displayed QR code using , then try again. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
INFORMATION The sound pressure level is less than 70 dBA. ▪ Air flow. Make sure nothing blocks the air flow. ▪ Drainage. Make sure condensation water can be evacuated properly. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 23
≥50 ≥50 (mm) Note: Make sure that there are no obstacles within 500 mm under the infrared signal receiver. They may influence reception performance of the wireless remote control. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
2 Open the panel locks on the back side of the panel (1 on each side). a Panel lock 3 Push the right arm lightly to the right to disconnect the shaft from the shaft slot on the right side. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
2 Pull out the service cover horizontally away from the unit. a Service cover b Service cover screw NOTICE When closing the service cover, make sure that the tightening torque does NOT exceed 1.4 (±0.2) N•m. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
7 Slide the flat screwdriver in the direction of triangle on the rib into the half- moon shaped dent on the grille. a Triangle symbol 8 Slightly press down the front grille and insert the screwdriver in slot next to the hooks. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
2 Level the mounting plate. 3 Mark the centres of the drilling points on the wall using a tape measure. Position the end of tape measure at symbol " ". FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
For walls containing a metal frame or a metal board, use a wall embedded pipe and wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
2 Remove any burrs along the cut section using a half round needle file. NOTICE Do NOT use nippers to remove the pipe port cover, as this would damage the front grille. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Drain socket with nominal Ø13 mm (field supply) c Ridgid polyvinyl chloride pipe (field supply) ▪ Condensation. Take measures against condensation. Insulate the complete drain piping in the building. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Do NOT apply lubricating oil (refrigerant oil) to the drain plug when inserting it. The drain plug may deteriorate and cause drain leakage from the plug. a 4 mm hexagonal wrench FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Remove the pipe port cover here for left-bottom piping 6.4.4 To check for water leaks 1 Remove the air filters. 2 Gradually pour approximately 1 l of water in the drain pan, and check for water leaks. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
12.7 mm (1/2") Depending on the applicable legislation and the maximum working pressure of the unit (see "PS High" on the unit name plate), larger piping thickness might be required. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
7.2.2 Precautions when connecting the refrigerant piping INFORMATION Also read the precautions and requirements in the following chapters: ▪ "2 General safety precautions" [ 7] ▪ "7.1 Preparing refrigerant piping" [ 33] DANGER: RISK OF BURNING/SCALDING FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Take the following guidelines into account when connecting pipes: ▪ Coat the flare inner surface with ether oil or ester oil when connecting a flare nut. Tighten 3 or 4 turns by hand, before tightening firmly. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
3 Remove the flare nut from the stop valve and put the flare nut on the pipe. 4 Flare the pipe. Set exactly at the position as shown in the following figure. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
See "9.1 To insulate the drain piping, refrigerant piping and interconnection cable" [ 43]. NOTICE Make sure to insulate all refrigerant piping. Any exposed piping might cause condensation. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
ALWAYS use multicore cable for power supply cables. INFORMATION Also read the precautions and requirements in the "2 General safety precautions" [ 7]. INFORMATION Also read "8.1.3 Specifications of standard wiring components" [ 40]. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Place the round crimp-style terminal on the wire up to the covered part and fasten the terminal with the appropriate tool. a Stranded conductor wire b Round crimp-style terminal ▪ Use the following methods for installing wires: FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
1 Set the indoor unit on the mounting plate hooks. Use the " " marks as a guide. a Mounting plate (accessory) b Piece of packing material FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 41
9 Pull the wires to make sure that they are securely attached, then retain the wires with the wire retainer. 10 Shape the wires so that the service cover fits securely, then close the service cover. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
S21 connector 3 Put the electrical wiring box cover back and pull the wire harness around it as shown in the figure above. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
1 Shape the refrigerant pipes along the pipe path marking on the mounting plate. a Drain hose b Caulk this hole with putty or caulking material c Adhesive vinyl tape d Insulation tape e Mounting plate (accessory) FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
4 Insert the wire harness back into the connector and secure it with the wire clamp. 5 Close the front panel. Refer to "9.4.4 To close the front panel" [ 45]. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
1 Open the front panel and turn the flap up. 2 Install both screw covers (1 on each side). 2× 3 Return flap to its original position and close the front panel. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
10 Commissioning NOTICE General commissioning checklist. Next to the 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 commissioning and hand-over to the user.
6 Change status to ON by 7 Press to confirm the selection. Result: The indoor unit enter test run mode, during which normal operation is not possible. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 48
The test run is only completed if the indoor unit does not report any error code. ▪ See the service manual for the complete list of error codes and a detailed troubleshooting guideline for each error. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
“Documentation”. ▪ Indoor unit setting: brightness of the Daikin eye, open the front panel, wireless LAN connection, vertical airflow function, indoor unit installation position, keep dry function ▪ Wireless remote control setting: LCD contrast, LCD brightness, LCD turn off time,...
Explain the user how to properly operate the system and what to do in case of problems. ▪ Show the user what to do for the maintenance of the unit. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
A more detailed troubleshooting guideline for each error Position Error Description code Normal Outdoor unit: High pressure peak cut / freeze protection problem Outdoor unit: Malfunction of outdoor unit fan motor FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 52
Outdoor unit: Defect of power supply voltage Outdoor unit: Cool/heat switchover problem Indoor unit: Streamer unit abnormality Outdoor unit: Abnormal high pressure actuation of high pressure switch Outdoor unit: Actuation of high pressure switch FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Page 53
Description code Outdoor unit: Malfunction of high pressure switch System shutdown due to compressor internal temperature abnormality Outdoor unit: Power input overvoltage Outdoor unit: Automatic refrigerant charge operation completed FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Do NOT try to dismantle the system yourself: dismantling of the system, treatment of the refrigerant, oil and other parts MUST comply with applicable legislation. Units MUST be treated at a specialised treatment facility for reuse, recycling and recovery. FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Technical data 15 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). 15.1 Wiring diagram The wiring diagram is delivered with the unit, located on the inner right side of the indoor unit front grille.
Page 56
N=* Number of passes through ferrite core Pulse-amplitude modulation PCB* Printed circuit board Power module Switching power supply PTC* PTC thermistor Insulated gate bipolar transistor (IGBT) Circuit breaker FTXJ-A(W)(S)(B) Installer reference guide Daikin room air conditioner 4P518023-12K – 2022.05...
Optional equipment Equipment made or approved by Daikin that can be combined with the product according to the instructions in the accompanying documentation. Field supply Equipment NOT made by Daikin that can be combined with the product according to the instructions in the accompanying documentation.
Page 60
4P518023-12K 2022.05 Verantwortung für Energie und Umwelt...