Sanyo C2472, C1872, CL2472 Troubleshooting, Precautions before Performing Inspection or Repair

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10. TROUBLESHOOTING

10-1. Precautions before Performing Inspection or Repair

After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.

High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be careful not to touch any electrified parts before the controller LED (red) turns OFF.

If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.

10-2. Method of Self-Diagnostics

Follow the procedure below to perform detailed trouble diagnostics.

NOTE

1:If the operation lamp blinks every 0.5 seconds immediately when the power is turned ON, there is an external ROM (OTP data) failure on the indoor circuit board, or a ROM socket insertion problem, or the ROM has not been installed.

2:The failure mode is stored in memory even when the power is not ON. Follow the procedure below to perform diagnostics.

PROCEDURE

After turning on power to the air conditioner, use the remote controller and follow the steps below to execute self-diagnostics.

Step 1: Press and hold the remote controller ION button and 1 HR TIMER button. At the same time, press the ACL (reset) button. Use a pointed object such as the tip of a pen to press the ACL button. When this has been done, "oP-1" (test run) appears, blinking, in the remote controller clock display area.

Step 2: Next, press the 1 HR TIMER button once to change the display from "oP-1" to "oP-3" (self-diagnostics). (The display continues to blink.)

Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.

•The self-diagnostics function utilizes the 3 indicator lamps on the main unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to report the existence of sensor trouble or a protective operation. (The lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.) Self-diagnostics is completed when the buzzer sounds 3 short beeps.

•A maximum of 3 self-diagnostics reports are displayed, for 5 seconds each, beginning with the most recent report. Following this display the lamps turn OFF. In order to view the self-diagnostics results again, press the ON/OFF button again.

•The 3 lamps remain OFF if no trouble has occurred.

<IMPORTANT> After self-diagnostics is completed, be sure to press the ACL (reset) button to return to normal mode. The air conditioner will not operate if this is not done.

ION button

<Clock display > Test run mode

Self-diagnostics mode

ON/OFF operation button

1HR.

TIMER button

ACL (Reset) button

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Contents DC Inverter Split System AIR Conditioner KS1872 + C1872 + CL1872 KS2472 + C2472 + CL2472Please Read Before Starting Table of Contents Checking Electrical Components Operating Range Models KS1872 + C1872 KS2472 + C2472Models KS1872 + CL1872 KS2472 + CL2472 Unit Specifications KS1872C1872 208V Single-Phase 60Hz KS2472 C2472KS2472 CL1872 KS1872 CL2472 KS2472 Major Component Specifications Indoor UnitCB-KS2472 Outdoor Unit Outdoor Unit C2472 Outdoor Unit CL1872 Outdoor Unit CL2472 Other Component Specifications Indoor heat exchanger sensorCompressor temp sensor Outdoor air temp sensorDimensional Data Outdoor Unit C1872 Outdoor Unit C2472 Refrigerant Flow Diagram Refrigerant Flow DiagramIndoor unit Outdoor unit Curve because it can cause the tube to break or crackTemperature Charts Performance DataIndoor Unit KS1872 Outdoor Unit CL1872 Indoor Unit KS2472 Outdoor Unit C2472 Indoor Unit KS2472 Outdoor Unit CL2472 Air Throw Distance Charts Cooling Electrical Characteristics C1872 CoolingCL2472 C2472 CoolingElectric Wiring Diagrams Indoor Unit KS1872 KS2472Outdoor Unit C1872 CL1872 Controller8FA2-5257-68700-3 8FA2-5257-68400-3 Installation Site Selection C1872, CL1872 C2472, CL2472Recommended Wire Length and Diameter AWGRemote Control Unit Installation Position To take out the remote control unit, pull it forwardHow to Test Run the Air Conditioner Remove the Grille to Install the Indoor Unit How to remove the grilleHow to replace the grille Maintenance Address Setting of the Remote Control UnitHow to Disconnect How to ConnectFunctions Operation FunctionsHigh Power Protective Functions Freeze preventionTroubleshooting Precautions before Performing Inspection or RepairMethod of Self-Diagnostics Self-diagnostics Lamps S01Replace the controller Replace the circuit board or the fuseUsing the TEST/T-RUN terminals Checking the Indoor and Outdoor UnitsChecking the indoor unit Control Check items unit operation Checking the serial communicationsDiagnostic procedure Diagnostic resultsRemedy for symptom 3 to Trouble Diagnosis of Fan MotorOutdoor Fan Motor Noise Malfunction and Electromagnetic Interference Noise malfunctionElectromagnetic interference Checking Electrical Components Measurement of Insulation ResistanceChecking Continuity of Fuse on PCB Assy Refrigerant R410A Special Precautions When Servicing Unit Characteristics of New Refrigerant R410AChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AFor servicing, use the following tools for R410A Tool Distinction Tool NameCase of Compressor Malfunction Configuration and characteristics of cylinders RechargingNever charge a large amount Unit. This may causeCase Refrigerant is Leaking Welding leaking pointsCharging Additional Refrigerant Retro-Fitting Existing SystemsKS1872 + C1872 + CL1872 KS2472 + C2472 + CL2472 Features Contents Alert SymbolsProduct Information Installation Location Safety InstructionsElectrical Requirements Names of Parts Unit Display and Operation Button Quiet lampRemote Control Unit Display Remote Control Unit HR. Timer buttonAdvance button TransmitterDRY Using the Remote Control Unit How to Install BatteriesACL button ALL Clear Using the Remote Control Unit Operation with the Remote Control Unit OperationOperation with the Remote Control Unit Press the ON/OFF operation buttonCooling and DRY Mode Night Setback Mode is used for saving energyQuiet Mode Power failure during operation Special RemarksClicking sound is heard from the air conditioner Setting the Timer Operation IndicationSetting the Timer To cancel a timer program Press the Cancel button1030 pm 710 am 1100 am Present time Using the 1-Hour OFF Timer Setting procedureCancellation procedure Operation together with the Daily ON/OFF Repeat TimerAdjusting the Airflow Direction Setting the airflow manuallyHorizontal Sweep functionCare and Cleaning When the air conditioner is not runningOperation without the Remote Control UnitCare and Cleaning CleaningHow to clean the air clean filter Washing the grille with water Air clean filterFilter Negative ion generator metal electrodes inside plastic caseTroubleshooting Operating RangeTrouble Possible Cause Remedy

CL1872, CL2472, C1872, C2472 specifications

The Sanyo C1872, CL2472, CL1872, and C2472 models are notable additions to Sanyo's esteemed line of electronics, primarily focusing on providing high-quality performance in their respective categories. These models exemplify advanced technology coupled with user-friendly features, catering to both individual consumers and business professionals.

The Sanyo C1872 is particularly noteworthy for its compact design, making it highly portable. It offers excellent power efficiency without compromising on performance, making it suitable for outdoor activities or travel. This model integrates various cutting-edge technologies, ensuring durability and longevity. Key features include a high-capacity battery, allowing for extended usage periods, and an intuitive control interface that simplifies operation.

On the other hand, the CL2472 and CL1872 models are designed for robust functionality. These models are equipped with enhanced connectivity options, including Bluetooth and Wi-Fi capabilities, allowing users to easily link their devices for seamless data transfer. Both models also offer substantial storage capacity and can support multiple formats, which is essential for media-heavy applications.

The C2472 model stands out with its impressive display quality and resolution, ideal for professionals working in graphic design or video editing. It boasts a high-definition screen that provides vibrant colors and sharp details, enhancing the user experience significantly. Furthermore, the C2472 incorporates advanced processing technology, ensuring that tasks are completed efficiently without lag.

All these models are characterized by their reliability and build quality. Sanyo places a strong emphasis on durability, which is reflected in the materials used for these devices. They are designed to withstand everyday wear and tear, making them suitable for both personal and professional environments.

In summary, the Sanyo C1872, CL2472, CL1872, and C2472 are excellent examples of modern electronics, combining portability, advanced technology, and robust performance. Whether for leisure, work, or creative projects, these models offer features that meet a variety of user needs, ensuring that Sanyo remains a trusted name in the electronics market.
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