What does serial reverse transfer error during the operation mean for Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner displays a serial reverse transfer error during operation, it means the indoor unit isn't receiving a signal for 10 seconds. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.
Why Fujitsu Air Conditioner has power supply frequency detection error?
If your Fujitsu Air Conditioner displays a power supply frequency detection error, it means the power supply frequency cannot be recognized after 4 seconds of power ON. The Controller PCB might be defective.
What does forced auto switch error mean on Fujitsu AOYS12LDC?
If your Fujitsu Air Conditioner displays a forced auto switch error, it means the forced auto switch has been ON for 30 consecutive seconds. Check if the forced auto switch is kept pressed. The forced auto switch might be defective or the Controller PCB might be defective.
What to do if my Fujitsu Air Conditioner shows outdoor temperature thermistor error?
If your Fujitsu Air Conditioner displays an outdoor temperature thermistor error, it means the detection value of the outdoor temperature thermistor is either open or shorted. Check the thermistor resistance value. The controller PCB might be defective.
What does outdoor heat exchanger thermistor error mean for Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner displays an outdoor heat exchanger thermistor error, it means the detection value of the outdoor heat exchanger thermistor is either open or shorted. Check the thermistor resistance value. The controller PCB might be defective.
What to do if my Fujitsu AOYS12LDC Air Conditioner shows discharge thermistor error?
If your Fujitsu Air Conditioner displays a discharge thermistor error, it means the detection value of the discharge thermistor is either open or shorted. Check the thermistor resistance value. The controller PCB might be defective.
What causes Indoor heat exchanger thermistor error in Fujitsu AOYS12LDC?
If your Fujitsu Air Conditioner shows an indoor heat exchanger thermistor error, it means the detection value of the indoor heat exchanger thermistor is either open or shorted when the power is ON. Check the thermistor resistance value. The controller PCB might be defective.
What does serial forward transfer error during the operation mean for Fujitsu Air Conditioner?
If your Fujitsu Air Conditioner displays a serial forward transfer error during operation, it means the outdoor unit isn't receiving a signal for 10 seconds. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.
Why Fujitsu AOYS12LDC Air Conditioner shows serial forward transfer error at starting up operation?
If your Fujitsu Air Conditioner displays a serial forward transfer error at startup, it means the outdoor unit isn't receiving a signal for 10 seconds after the power relay turns on. Check the indoor/outdoor cable connection. If the wiring is normal, measure the voltage of the outdoor unit terminals and diagnose the defective location.
Why my Fujitsu AOYS12LDC Air Conditioner does not operate at all?
If your Fujitsu Air Conditioner isn't operating, and the Operation Lamp and Timer Lamp aren't lit, you should check a few things: * Ensure the input power voltage from the exclusive circuit AC outlet is normal. * Make sure the AC plug is securely inserted into the AC outlet and isn't loose. * Verify that any connected cables are wired correctly. * Confirm that each connector is securely inserted.
General| Type | Split System |
|---|---|
| Cooling Capacity | 3.4 kW |
| Heating Capacity | 4.0 kW |
| Refrigerant | R410A |
| Noise Level (Outdoor) | 50 dB(A) |
| Power Supply | 220-240V, 50Hz |
| Indoor Unit Weight | 9 kg |
Troubleshooting steps for units that do not operate at all.
Explains the self-diagnosis function and memory reading.
Troubleshooting steps for serial signal receiving errors between units.
Checks and causes for IPM protection errors in the outdoor unit.
Diagnosis table and methods for refrigerant cycle issues.
Explains indoor and outdoor unit jumper settings for custom codes and auto restart.
Presents cooling performance curves for low pressure and current.
Presents heating performance curves for high pressure and current.
Lists resistance values for various thermistors at different temperatures.
Resistance values for room temperature thermistors.
Resistance values for indoor heat exchanger thermistors.
Resistance values for discharge thermistors.
Resistance values for outdoor heat exchanger thermistors.
Resistance values for outdoor temperature thermistors.
Cooling and heating capacity/input graphs for ASYA09LCC.
Cooling and heating capacity/input graphs for ASYA12LCC.
Cooling and heating capacity/input graphs for ASYA18LCC.
Cooling and heating capacity/input graphs for ASYB09LDC.
Cooling and heating capacity/input graphs for ASYB12LDC.
Instructions for wiring lead wires for the inverter assembly.
Shows how to connect leads to the inverter assembly.
Illustrates shaping of leads for the inverter assembly.
Details the process of attaching the inverter assembly.
Shows how leads are connected to the inverter assembly with labels.
Illustrates fixing of thermistor and motor leads.
Lists standard installation accessories supplied with the product.
Specifies requirements for the air conditioner's power supply.
Provides guidelines for choosing indoor and outdoor unit mounting locations.
Guidelines for selecting the indoor unit mounting position.
Guidelines for selecting the outdoor unit mounting position.
Illustrates the installation layout of indoor and outdoor units.
Instructions for removing and installing the front panel and intake grille.
Steps to remove the air cleaning unit from the indoor unit.
Steps to install the air cleaning unit into the indoor unit.
Advice on explaining operation and maintenance to the customer.
Procedure for recovering refrigerant before unit relocation or disposal.
Instructions for insulating pipes and sealing gaps.
Specific installation steps for the indoor unit.
Details on cutting the wall hole for piping.
Guidelines for securely installing the wall hook bracket.
Instructions for forming and routing the drain hose and piping.
Steps for connecting the indoor unit wiring.
Specific installation steps for the outdoor unit.
General installation guidelines for the outdoor unit.
Procedure for purging air from the refrigerant circuit.
Steps for connecting the outdoor unit wiring.
General connection steps for piping.
Instructions for flaring refrigerant pipes.
Steps for connecting the refrigerant piping.
Procedures for performing test operation after installation.
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