Daikin FTXS35CVMB8 User Manual

C-Series
[Applied Models]
zInverter Multi : Cooling Only
zInverter Multi : Heat Pump
Si12 - 411A

Daikin FTXS35CVMB8 Specifications

General

Brand	Daikin
Model	FTXS35CVMB8
Category	Air Conditioner
Language	English

Summary

Part 1 List of Functions

1.1 Cooling Only Models

Lists functions available for cooling-only air conditioner models.

1.2 Heat Pump Models

Lists functions specific to heat pump air conditioner models.

Part 2 Specifications

1. Specifications

Details technical specifications for various unit types.

1.1 Indoor Units - Cooling Only

Details specifications for indoor units in cooling-only mode.

1.2 Outdoor Units - Cooling Only

Details specifications for outdoor units in cooling-only mode.

1.3 Indoor Units - Heat Pump

Details specifications for indoor units in heat pump mode.

1.4 Outdoor Units - Heat Pump

Details specifications for outdoor units in heat pump mode.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

Illustrates the layout and connections of PCBs.

1.1 Wall Mounted Type 20/25/35 Class

Wiring diagram for wall-mounted indoor units of 20/25/35 class.

1.2 Wall Mounted Type 50/60/71 Class

Wiring diagram for wall-mounted indoor units of 50/60/71 class.

1.3 Duct Connected Type

Wiring diagram for duct-connected indoor units.

1.4 Floor / Ceiling Suspended Dual Type

Wiring diagram for floor/ceiling suspended dual type indoor units.

1.5 Floor Standing Type

Wiring diagram for floor standing type indoor units.

1.6 Outdoor Units

Wiring diagram for outdoor units.

Part 5 System Configuration

2.2 Safety Precautions

Outlines critical safety warnings and cautions for installation and operation.

2.7 POWERFUL Operation

2.9 HOME LEAVE Operation

2.10 INTELLIGENT EYE Operation

2.14 Troubleshooting

Part 6 Service Diagnosis

1. Caution for Diagnosis

1.1 Troubleshooting with the Operation Lamp

2. Problem Symptoms and Measures

Lists common operational problems and their corresponding checks/measures.

3. Service Check Function

4. Code Indication on the Remote Controller

Lists error codes displayed on the remote controller and their meanings.

4.1 Error Codes and Description of Fault

Details error codes and their corresponding fault descriptions.

5. Troubleshooting

Detailed troubleshooting steps for various system malfunctions.

5.1 Indoor Units

Troubleshooting specific to indoor unit faults.

5.2 Outdoor Units

Troubleshooting specific to outdoor unit faults.

5.3 Indoor Unit PCB Abnormality

5.4 Freeze-up Protection Control or High Pressure Control

Troubleshooting related to freeze-up protection and high pressure control.

5.5 Fan Motor or Related Abnormality

Troubleshooting fan motor and associated component issues.

5.5.1 AC Motor

5.6 Thermistor or Related Abnormality (Indoor Unit)

Diagnosing problems related to indoor unit thermistors.

5.7 Shutter Drive Motor / Shutter Limit Switch Abnormality

5.8 Signal Transmission Error (between Indoor and Outdoor Units)

Diagnosing communication errors between indoor and outdoor units.

5.9 Unspecified Voltage (between Indoor and Outdoor Units)

5.10 Freeze-up Protection Control

Details troubleshooting for the indoor unit's freeze-up protection.

5.11 OL Activation (Compressor Overload)

Troubleshooting compressor overload issues.

5.12 Compressor Lock

Diagnosing and resolving compressor lock issues.

5.13 DC Fan Lock

5.14 Input Over Current Detection

Diagnosing and addressing over current detection faults.

5.15 Four Way Valve Abnormality

Troubleshooting issues with the four-way valve.

5.16 Discharge Pipe Temperature Control

5.17 Position Sensor Abnormality

5.18 CT or Related Abnormality

5.19 Thermistor or Related Abnormality (Outdoor Unit)

Diagnosing problems with outdoor unit thermistors.

5.20 Electrical Box Temperature Rise

5.21 Radiation Fin Temperature Rise

5.22 Output Over Current Detection

Troubleshooting over current detection in the inverter DC section.

5.23 Insufficient Gas

Diagnosing and resolving refrigerant shortage or insufficient gas conditions.

5.24 Low-voltage Detection

5.25 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units)

6. Check

6.1 How to Check

6.1.1 Fan Motor Connector Output Check

6.1.2 Limit Switch Continuity Check

6.1.3 Electronic Expansion Valve Check

Procedures for checking the electronic expansion valve.

6.1.4 Four Way Valve Performance Check

Checks the performance and continuity of the four-way valve.

6.1.5 Thermistor Resistance Check

Measures thermistor resistance against standard values.

6.1.6 Installation Condition Check

6.1.7 Discharge Pressure Check

6.1.8 Outdoor Unit Fan System Check (With DC Motor)

6.1.9 Power Supply Waveforms Check

6.1.10 Inverter Units Refrigerant System Check

6.1.11 Capacitor Voltage Check

6.1.12 Power Transistor Check

6.1.13 Main Circuit Electrolytic Capacitor Check

6.1.14 Turning Speed Pulse Input on the Outdoor Unit PCB Check

6.1.15 Hall IC Check

Part 7 Removal Procedure

1. Outdoor Unit (80 / 90 Class)

1.4 Removal of PCB

1.6 Removal of Electronic Expansion Valve and Thermistor

1.9 Removal of Solenoid Valve and Four Way Valve

1.10 Removal of Compressor

Procedure for safely removing the compressor unit.

2. Outdoor Unit (50 / 52 / 58 / 68 / 75 Class)

2.3 Removal of PCB

2.6 Removal of Four Way Valve Coil, Solenoid Valve Coil, Electronic Expansion Valve Coil and Thermistor

2.7 Removal of Four Way Valve, Solenoid Valve and Shunt

2.9 Removal of Compressor

Steps for safely removing the compressor unit.