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Fujitsu Trouble Shooting Guide
Current Models
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
Wall Mounted Single Systems ASY, ASYA & ASYB
Includes AWYZ Nokria Models
Red Light
Green Light
Current Models
Operation
Timer
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
Red
Green
Meaning
2 Flashes
Blinks
ID Sensor Failure
2 Flashes
Blinks
ID Sensor Failure
4 Flashes
Blinks
ID Control Error
4 Flashes
Blinks
ID Control Error
5 Flashes
Blinks
Comms Failure
5 Flashes
Blinks
Comms Failure
6 Flashes
Blinks
ID Fan Failure
6 Flashes
Blinks
ID Fan Failure
Blinks
2 Flashes
OD Thermistor Fail
Blinks
2 Flashes
OD Thermistor Fail
Blinks
2 Flashes
OD Thermistor Fail
Blinks
2 Flashes
OD Thermistor Fail
Blinks
2 Flashes
OD Thermistor Fail
Blinks
2 Flashes
OD Thermistor Fail
Blinks
3 Flashes
Pressure Switch
Blinks
4 Flashes
ID Units Incorrect
Blinks
5 Flashes
Inverter Failure
Blinks
5 Flashes
Inverter Failure
All Other Wireless Indoor Units AUY, ABY & AWY
Models. Including Multi Systems (Not J Series or VRF)
Red Light
Green
Yellow
Operation
Light Timer
Light Swing
On
On
Slow Blink
Slow Blink
Blinks
Blinks
Off
Blinks
Blinks
Blinks
Blinks
2 Pulses
Off
Blinks
3 Pulses
Off
Blinks
4 Pulses
Off
Blinks
4 Pulses
Blinks
Blinks
5 Pulses
Off
Blinks
5 Pulses
Blinks
Blinks
6 Pulses
Off
Blinks
7 Pulses
Off
Blinks
9 Pulses
Off
Blinks
10 Pulses
Off
Blinks
11 Pulses
Off
Blinks
12 Pulses
Off
Blinks
13 Pulses
Off
Blinks
14 Pulses
Off
2 Pulses
Blinks
Off
2 Pulses
Blinks
Blinks
3 Pulses
Blinks
Off
3 Pulses
Blinks
Blinks
4 Pulses
Blinks
Off
5 Pulses
Blinks
Off
5 Pulses
Blinks
Blinks
6 Pulses
Blinks
Off
Further Interrogation by Pressing Test Button on Infra Red RC
Red
Green
Meaning
Blinks
2 Flashes
ID Air Sensor
Blinks
3 Flashes
ID Pipe Sensor
Blinks
2 Flashes
Manual Auto Button Error
Blinks
4 Flashes
Power Source Failure
Blinks
2 Flashes
Reverse Comms Failure
Blinks
3 Flashes
Forward Comms Failure
Blinks
2 Flashes
Motor locked
Blinks
3 Flashes
Motor RPM Incorrect
2 Flashes
Blinks
OD Discharge Sensor Fail
4 Flashes
Blinks
OD Pipe Sensor Fail
6 Flashes
Blinks
OD Air Sensor Fail
8 Flashes
Blinks
Compressor Temp Sensor Fail
9 Flashes
Blinks
2 Way Valve Sensor Fail
10 Flashes
Blinks
3 Way Valve Sensor Fail
2 Flashes
Blinks
Pressure Switch
2 Flashes
Blinks
Incorrect Indoor Unit Index
2 Flashes
Blinks
IPM Failure
5 Flashes
Blinks
Compressor Failure
Normal
Test
ID PCB Fail
OD PCB Fail
OD Power Connection Failure
OD Unit Pipe Sensor Fail
OD Unit Air Sensor Fail
OD Unit Air Sensor Short
OD Unit Disch Sensor Fail
OD Unit Disch Sensor Short
High Pressure
High Discharge or Compressor Temp
OD Unit Compressor Temp Sensor
IPM Error
CT Error
AFM Filter Error
Compressor Error
OD Fan Motor Fail
Air Sensor Open
Air Sensor Closed
Pipe Sensor Open
Pipe Sensor Closed
Drain Problem
Communication Error
OD PCB or Wiring Error
Indoor Fan Failure
Related Manuals for Fujitsu ASY7-12A
Summary of Contents for Fujitsu ASY7-12A
- Page 1 Fujitsu Trouble Shooting Guide Current Models 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 Wall Mounted Single Systems ASY, ASYA & ASYB All Other Wireless Indoor Units AUY, ABY &...
- Page 2 Fujitsu Trouble Shooting Guide Current Models Wired Remote Control Models PFC circuit error Indoor signal error Code Consists of Indoor Unit Address Followed by the Fault Code Indoor signal error Below. No E denotes No Fault. Indoor heat exchanger temperature error...
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Page 3: Outdoor Unit
Fujitsu Trouble Shooting Guide A General Guide Pipework Outdoor Unit • Discharge temperature should be • Pipe sizes and lengths should be as the between 50 & 70°C relevant Technical Guide • Suction temperature should be • Both lines should be insulated between -3 & 4°C • No line accessories or oil traps should • If fan switches off check for high be fitted discharge temperature •... - Page 4 Fujitsu Trouble Shooting Guide Current Models Wired Controllers – Fault diagnostics Code Fault Diagnosis I/U - R/C Comms Check R/C wiring. Interference? A Fault Condition is signalled by EE:EE appearing on the E:01 I/U - O/U Comms Check intercon. wiring. Interference LCD panel.