Why Fujitsu AOYS12LDC shows serial reverse transfer error at starting up operation?
If your Fujitsu Air Conditioner displays a serial reverse transfer error at startup, it means the indoor 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.
What does main relay error mean on Fujitsu AOYS12LDC Air Conditioner?
If your Fujitsu Air Conditioner displays a main relay error, it means that after 2 minutes 20 seconds of stopping operation, the signal from the outdoor unit is received even though the main relay is OFF. The main relay might be defective or the Controller PCB might be defective.
What causes a room temperature thermistor defective in Fujitsu AOYS12LDC?
If your Fujitsu Air Conditioner shows a room temperature thermistor defect, it means the thermistor detected an abnormal temperature when the power was turned on. Check the thermistor resistance value. The controller PCB might be defective.
What to do if my Fujitsu Air Conditioner has indoor fan speed error?
If your Fujitsu Air Conditioner displays an indoor fan speed error, it means the indoor fan speed is 1/3 of the target frequency after 56 seconds from starting or changing the fan mode. Here’s what to check: * Check the fan motor connector for looseness or defective contact. * The fan motor might be defective. * The controller PCB might be defective.
What to do if my Fujitsu Air Conditioner has indoor fan lock error?
If your Fujitsu Air Conditioner displays an indoor fan lock error, it means the indoor fan speed is 0 rpm after 56 seconds from starting or changing the fan mode. Here’s what to check: * Check the fan motor connector for looseness or defective contact. * The fan motor might be defective. * The controller PCB might be defective.
What causes IPM protection in my Fujitsu AOYS12LDC Air Conditioner?
If your Fujitsu Air Conditioner is showing IPM protection, it indicates that an abnormal current value has been detected. Here's what you should check: * Ensure that heat radiation is not blocked at the inlet or outlet. * Verify that the outdoor fan is functioning correctly and rotating. * The controller PCB might be defective.
What to do if my Fujitsu Air Conditioner shows excessive high pressure protection on cooling?
If your Fujitsu Air Conditioner is showing an excessive high pressure protection error during cooling, check the following: * Ensure that heat radiation is not blocked at the inlet or outlet. * Verify that the outdoor fan is functioning correctly and rotating. * Check for any issues with the refrigeration cycle.
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.
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 |
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