Fujitsu AOYR12LCC User Manual (English)

Other manuals for Fujitsu AOYR12LCC

Questions and Answers:

N
Nancy YoungAug 21, 2025
Why my Fujitsu AOYR12LCC Air Conditioner does not operate at all?
- J
  Julia FergusonAug 21, 2025
  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.
A
Amanda HernandezAug 22, 2025
What to do if my Fujitsu AOYR12LCC Air Conditioner shows excessive high pressure protection on cooling?
- B
  ballisonAug 22, 2025
  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.
G
gailjohnsonAug 25, 2025
What causes IPM protection in my Fujitsu AOYR12LCC Air Conditioner?
- R
  Roger DixonAug 25, 2025
  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.
A
alisonbarrettAug 26, 2025
What to do if my Fujitsu AOYR12LCC Air Conditioner has indoor fan lock error?
- J
  John JordanAug 26, 2025
  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.
J
Jared MccoyAug 27, 2025
What to do if my Fujitsu Air Conditioner has indoor fan speed error?
- D
  David MillerAug 28, 2025
  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.
T
Timothy DrakeAug 29, 2025
What causes a room temperature thermistor defective in Fujitsu AOYR12LCC Air Conditioner?
- A
  Austin PattersonAug 29, 2025
  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.
J
James AndersonAug 31, 2025
What does main relay error mean on Fujitsu Air Conditioner?
- S
  stewartjonathanAug 31, 2025
  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.
K
Kimberly BryantSep 2, 2025
Why Fujitsu AOYR12LCC Air Conditioner shows serial reverse transfer error at starting up operation?
- L
  lewisanthonySep 2, 2025
  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.
C
Christopher HansenSep 4, 2025
What does serial reverse transfer error during the operation mean for Fujitsu AOYR12LCC?
- P
  Peter WolfSep 4, 2025
  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.
D
Deborah MichaelSep 5, 2025
Why Fujitsu Air Conditioner shows serial forward transfer error at starting up operation?
- C
  Catherine JosephSep 6, 2025
  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.

Fujitsu AOYR12LCC Specifications

General

Brand	Fujitsu
Model	AOYR12LCC
Category	Air Conditioner
Language	English

Summary

Specifications

Dimensions

Refrigerant System Diagram

Circuit Diagram

Description of Each Control Operation

Cooling Operation

Details compressor frequency control based on room and outdoor temperature.

Heating Operation

Explains compressor frequency control during heating based on room and outdoor temperature.

Dry Operation

Describes compressor frequency and indoor fan control during dry mode.

Auto Changeover Operation

Details automatic switching between modes based on temperature zones.

Indoor Fan Control

Explains fan speed settings and operation modes for the indoor fan.

Outdoor Fan Control

Describes outdoor fan motor types and speed control based on conditions.

Louver Control

Details vertical louver adjustment and swing operation for airflow direction.

Compressor Control

Explains compressor operation frequency ranges and startup control.

Timer Operation Control

Describes ON/OFF timers, program timer, and sleep timer functions.

Electronic Expansion Valve Control

Explains how the electronic expansion valve opening is calculated and controlled.

Test Operation Control

Details how to enter and conduct test operation mode for troubleshooting.

Prevent to Restart for 3 Minutes (3 Minutes ST)

Specifies the delay before the compressor can restart after stopping.

Four-Way Valve Extension Select

Describes the switching of the four-way valve between cooling and heating modes.

Auto Restart

Explains how operation contents are memorized and restored after a power failure.

Manual Auto Operation

Details the operation controlled by the MANUAL AUTO button without a remote.

Forced Cooling Operation

Explains how to initiate forced cooling operation using the manual button.

Compressor Preheating

Describes the preheating process for the compressor in heating mode.

Coil Dry Operation Control

Details the coil-dry operation cycles and fan operation.

Defrost Operation Control

Explains the conditions for starting and completing defrost operation.

Off Defrost Operation Control

Describes automatic defrosting when operation stops in heating mode.

Various Protections

Covers protections like discharge gas temperature, current release, and anti-freezing.

Refrigerant Caution -R410A

R410A Tools

Lists and describes specialized tools required for R410A systems.

Precaution for Installation

Provides essential precautions for installing units with R410A refrigerant.

Precaution for Servicing

Outlines precautions for servicing, focusing on refrigerant oil and pressure differences.

New Refrigerant R410A

Discusses R410A as a new refrigerant and its phase-out schedule.

Differences from Conventional Model (R22) and Precautions

Compares R410A with R22, highlighting differences in oil, compressor, and parts.

Trouble Shooting

Unit Does Not Operate (No Lights)

Provides troubleshooting steps for a unit that shows no power indication.

Self-Diagnosis Function

Explains how to use the self-diagnosis function and interpret error indications.

Serial Signal Receiving Error

Details troubleshooting for errors related to indoor/outdoor unit communication.

IPM Protection Troubleshooting

Provides steps to diagnose and resolve IPM protection issues in the outdoor unit.

Refrigerant Cycle Troubleshooting

Offers a diagnostic table and methods for refrigerant cycle related problems.

Appending Data

Jumper Setting

Details indoor and outdoor unit jumper settings for various functions.

Outdoor Unit Pressure and Current Curves (Cooling)

Presents cooling curves for outdoor unit low pressure and total electric current.

Outdoor Unit Pressure and Current Curves (Heating)

Presents heating curves for outdoor unit high pressure and total electric current.

Outdoor Unit Pressure and Current Curves (Cooling) - ASYB Models

Shows cooling curves for ASYB models' outdoor unit pressure and current.

Outdoor Unit Pressure and Current Curves (Heating) - ASYB Models

Shows heating curves for ASYB models' outdoor unit pressure and current.

Outdoor Unit Pressure and Current Curves (Cooling) - ASYA14/18LCC

Presents cooling curves for ASYA14/18LCC outdoor unit pressure and current.

Outdoor Unit Pressure and Current Curves (Heating) - ASYA14/18LCC

Shows heating curves for ASYA14/18LCC outdoor unit pressure and current.

Thermistor Resistance Values

Provides tables and charts of resistance values for various thermistors.

Capacity/Input Data (ASYA09LCC Heating)

Shows heating capacity and input data graphs for ASYA09LCC.

Capacity/Input Data (ASYA09LCC Cooling)

Shows cooling capacity and input data graphs for ASYA09LCC.

Capacity/Input Data (ASYA12LCC Heating)

Shows heating capacity and input data graphs for ASYA12LCC.

Capacity/Input Data (ASYA12LCC Cooling)

Shows cooling capacity and input data graphs for ASYA12LCC.

Capacity/Input Data (ASYA18LCC Heating)

Shows heating capacity and input data graphs for ASYA18LCC.

Capacity/Input Data (ASYA18LCC Cooling)

Shows cooling capacity and input data graphs for ASYA18LCC.

Capacity/Input Data (ASYB09LDC Heating)

Shows heating capacity and input data graphs for ASYB09LDC.

Capacity/Input Data (ASYB09LDC Cooling)

Shows cooling capacity and input data graphs for ASYB09LDC.

Capacity/Input Data (ASYB12LDC Heating)

Shows heating capacity and input data graphs for ASYB12LDC.

Capacity/Input Data (ASYB12LDC Cooling)

Shows cooling capacity and input data graphs for ASYB12LDC.

Replacement Parts

Installation Manual

Selecting the Mounting Position

Guides on choosing optimal locations for indoor and outdoor units.

Indoor Unit Piping Direction

Explains the five possible directions for connecting indoor unit piping.

Installation Diagram of Indoor and Outdoor Units

Illustrates the required clearances and placement for unit installation.

Front Panel and Intake Grille Removal/Installation

Instructions for removing and installing the indoor unit's front panel and intake grille.

Pump Down Operation (Forced Cooling)

Procedure for recovering refrigerant before unit relocation or disposal.

Air Purge Process

Steps for purging air from the refrigerant circuit using a vacuum pump.

Connecting the Piping

Details on flaring, connecting pipes, and tightening flare nuts.

Test Running Procedure

Steps for performing a test run to verify proper operation after installation.

Related product manuals

Fujitsu AOYR12LCC User Manual

Table of Contents

Other manuals for Fujitsu AOYR12LCC

Questions and Answers:

Fujitsu AOYR12LCC Specifications

Summary

Specifications

Dimensions

Refrigerant System Diagram

Circuit Diagram

Description of Each Control Operation

Cooling Operation

Heating Operation

Dry Operation

Auto Changeover Operation

Indoor Fan Control

Outdoor Fan Control

Louver Control

Compressor Control

Timer Operation Control

Electronic Expansion Valve Control

Test Operation Control

Prevent to Restart for 3 Minutes (3 Minutes ST)

Four-Way Valve Extension Select

Auto Restart

Manual Auto Operation

Forced Cooling Operation

Compressor Preheating

Coil Dry Operation Control

Defrost Operation Control

Off Defrost Operation Control

Various Protections

Refrigerant Caution -R410A

R410A Tools

Precaution for Installation

Precaution for Servicing

New Refrigerant R410A

Differences from Conventional Model (R22) and Precautions

Trouble Shooting

Unit Does Not Operate (No Lights)

Self-Diagnosis Function

Serial Signal Receiving Error

IPM Protection Troubleshooting

Refrigerant Cycle Troubleshooting

Appending Data

Jumper Setting

Outdoor Unit Pressure and Current Curves (Cooling)

Outdoor Unit Pressure and Current Curves (Heating)

Outdoor Unit Pressure and Current Curves (Cooling) - ASYB Models

Outdoor Unit Pressure and Current Curves (Heating) - ASYB Models

Outdoor Unit Pressure and Current Curves (Cooling) - ASYA14/18LCC

Outdoor Unit Pressure and Current Curves (Heating) - ASYA14/18LCC

Thermistor Resistance Values

Capacity/Input Data (ASYA09LCC Heating)

Capacity/Input Data (ASYA09LCC Cooling)

Capacity/Input Data (ASYA12LCC Heating)

Capacity/Input Data (ASYA12LCC Cooling)

Capacity/Input Data (ASYA18LCC Heating)

Capacity/Input Data (ASYA18LCC Cooling)

Capacity/Input Data (ASYB09LDC Heating)

Capacity/Input Data (ASYB09LDC Cooling)

Capacity/Input Data (ASYB12LDC Heating)

Capacity/Input Data (ASYB12LDC Cooling)

Replacement Parts

Installation Manual

Selecting the Mounting Position

Indoor Unit Piping Direction

Installation Diagram of Indoor and Outdoor Units

Front Panel and Intake Grille Removal/Installation

Pump Down Operation (Forced Cooling)

Air Purge Process

Connecting the Piping

Test Running Procedure

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