Fujitsu ASY7-12A - User Manual

Trouble Shooting
These pages cover the current Inverter product range.
They also cover the ARY60U, ARY54U Single and AOY19/24F/U Multi Systems.
Models with Wireless Controllers Trouble Shooting from the Indoor Unit
Fujitsu Trouble Shooting Guide
Current Models
Wall Mounted Single Systems ASY, ASYA & ASYB
Includes AWYZ Nokria Models
Red Light
Operation
Green Light
Timer
Current Models
Off 2 Flashes Reverse Comms Fail at Startup
Off 3 Flashes Reverse Comms Fail In Use
Off 4 Flashes Forward Comms Fail at Startup
Off 5 Flashes Forward Comms Fail In Use
Off 8 Flashes Wired Remote Control Failure
2 Flashes 2 Flashes Indoor Air Sensor Fail
2 Flashes 3 Flashes Indoor Pipe Sensor Fail
2 Flashes 4 Flashes Indoor heat exchanger sensor error
2 Flashes 6 Flashes Float switch operated
3 Flashes 2 Flashes OD Disch Sensor Fail
3 Flashes 3 Flashes OD Pipe Sensor Fail
3 Flashes 4 Flashes OD Air Sensor Fail
3 Flashes 7 Flashes Heatsink Sensor Error
3 Flashes 8 Flashes Compressor Temp Sensor Fail
4 Flashes 2 Flashes Forced Auto Switch Welded
4 Flashes 3 Flashes Main Relay Welded
4 Flashes 4 Flashes Power Failure
4 Flashes 7 Flashes VDD Permament Stop Protection
4 Flashes 8 Flashes Reverse VDD Permament Stop
5 Flashes 2 Flashes IPM Protection
5 Flashes 3 Flashes CT Abnormal
5 Flashes 5 Flashes Compressor Failure
5 Flashes 6 Flashes Outdoor Fan Failure
6 Flashes 2 Flashes ID Fan Motor Locked
6 Flashes 3 Flashes ID Fan Motor Rotation Error
7 Flashes 2 Flashes High Discharge Temperature
7 Flashes 3 Flashes High Pressure
7 Flashes 4 Flashes 4-Way valve abnormal
7 Flashes 5 Flashes Pressure Switch Fail
7 Flashes 6 Flashes Compressor Temperature error
8 Flashes 2 Flashes Active Filter AFM Fail 1st Time
8 Flashes 3 Flashes Active Filter AFM Fail 2nd Time
8 Flashes 4 Flashes PFC Circuit Error
Blinking Blinking PCB Failure
Wall Mounted Multi Models
Initial Display Further Interrogation by Pressing Test Button on Infra Red RC
Red Green Meaning Red Green Meaning
2 Flashes Blinks ID Sensor Failure Blinks 2 Flashes ID Air Sensor
2 Flashes Blinks ID Sensor Failure Blinks 3 Flashes ID Pipe Sensor
4 Flashes Blinks ID Control Error Blinks 2 Flashes Manual Auto Button Error
4 Flashes Blinks ID Control Error Blinks 4 Flashes Power Source Failure
5 Flashes Blinks Comms Failure Blinks 2 Flashes Reverse Comms Failure
5 Flashes Blinks Comms Failure Blinks 3 Flashes Forward Comms Failure
6 Flashes Blinks ID Fan Failure Blinks 2 Flashes Motor locked
6 Flashes Blinks ID Fan Failure Blinks 3 Flashes Motor RPM Incorrect
Blinks 2 Flashes OD Thermistor Fail 2 Flashes Blinks OD Discharge Sensor Fail
Blinks 2 Flashes OD Thermistor Fail 4 Flashes Blinks OD Pipe Sensor Fail
Blinks 2 Flashes OD Thermistor Fail 6 Flashes Blinks OD Air Sensor Fail
Blinks 2 Flashes OD Thermistor Fail 8 Flashes Blinks Compressor Temp Sensor Fail
Blinks 2 Flashes OD Thermistor Fail 9 Flashes Blinks 2 Way Valve Sensor Fail
Blinks 2 Flashes OD Thermistor Fail 10 Flashes Blinks 3 Way Valve Sensor Fail
Blinks 3 Flashes Pressure Switch 2 Flashes Blinks Pressure Switch
Blinks 4 Flashes ID Units Incorrect 2 Flashes Blinks Incorrect Indoor Unit Index
Blinks 5 Flashes Inverter Failure 2 Flashes Blinks IPM Failure
Blinks 5 Flashes Inverter Failure 5 Flashes Blinks Compressor Failure
All Other Wireless Indoor Units AUY, ABY & AWY
Models. Including Multi Systems (Not J Series or VRF)
Red Light
Operation
Green
Light Timer
Yellow
Light Swing
On Normal
On Slow Blink Slow Blink Test
Blinks Blinks Off ID PCB Fail
Blinks Blinks Blinks OD PCB Fail
Blinks 2 Pulses Off OD Power Connection Failure
Blinks 3 Pulses Off OD Unit Pipe Sensor Fail
Blinks 4 Pulses Off OD Unit Air Sensor Fail
Blinks 4 Pulses Blinks OD Unit Air Sensor Short
Blinks 5 Pulses Off OD Unit Disch Sensor Fail
Blinks 5 Pulses Blinks OD Unit Disch Sensor Short
Blinks 6 Pulses Off High Pressure
Blinks 7 Pulses Off
High Discharge or Compressor Temp
Blinks 9 Pulses Off OD Unit Compressor Temp Sensor
Blinks 10 Pulses Off IPM Error
Blinks 11 Pulses Off CT Error
Blinks 12 Pulses Off AFM Filter Error
Blinks 13 Pulses Off Compressor Error
Blinks 14 Pulses Off OD Fan Motor Fail
2 Pulses Blinks Off Air Sensor Open
2 Pulses Blinks Blinks Air Sensor Closed
3 Pulses Blinks Off Pipe Sensor Open
3 Pulses Blinks Blinks Pipe Sensor Closed
4 Pulses Blinks Off Drain Problem
5 Pulses Blinks Off Communication Error
5 Pulses Blinks Blinks OD PCB or Wiring Error
6 Pulses Blinks Off Indoor Fan Failure

Fujitsu ASY7-12A Specifications

General

Brand	Fujitsu
Model	ASY7-12A
Category	Air Conditioner
Language	English

Summary

Wireless Controllers Trouble Shooting

Wall Mounted Single Systems

Trouble shooting for wall-mounted single systems including AWYZ Nokria models.

Other Wireless Indoor Units

Trouble shooting for other wireless indoor units, including multi systems.

Wall Mounted Multi Models

Initial Display Meanings

Meaning of initial display codes for wall-mounted multi models.

Further Interrogation by Test Button

Diagnostic steps using the test button on the infrared remote control.

Wired Remote Control Models

Fault Code Diagnostics

Codes and diagnoses for wired remote control models.

Outdoor PCB Fault Codes

Inverter OD Unit PCBs (1 red LED)

Fault codes for outdoor unit PCBs with one red LED.

Non Inverter OD PCBs (2 red LEDs)

Fault codes for outdoor unit PCBs with two red LEDs.

Sensor Resistances

Check Thermistors

Resistance values for checking thermistors at different temperatures.

Pipework Guidelines

Indoor Unit Checks

Outdoor Unit Checks

Controller Operation

Wiring and Interconnecting Cables

Wired Controllers Fault Diagnostics

Wireless Remote Control Models Diagnostics