วิธีหาค่า C , S , R Common , Start , Run Ep 3

Introduction

This tutorial will guide you through the process of checking the C, S, and R values of a fan coil meter. With rising temperatures and tight budgets, learning to troubleshoot these issues yourself can save time and money. This guide is based on the insights shared in the video "วิธีหาค่า C , S , R Common , Start , Run Ep 3" by Chaiyathat Service.

Step 1: Gather Necessary Tools

Before you start checking the fan coil meter, ensure you have the following tools ready:

• Multimeter for measuring electrical values
• Screwdriver set for accessing the meter panel
• Safety gloves and goggles for personal protection
• Notepad for recording your findings

Practical Tips

• Always ensure the power is turned off before working on electrical components.
• Familiarize yourself with the multimeter's functions if you're not already.

Step 2: Access the Fan Coil Meter

Follow these steps to safely access the fan coil meter:

1. Turn off the power supply to the unit.
2. Use a screwdriver to remove the panel covering the fan coil meter.
3. Carefully inspect the area to ensure there is no visible damage.

Common Pitfalls to Avoid

• Forgetting to turn off the power can lead to electric shock.
• Misplacing screws during disassembly can complicate reassembly.

Step 3: Measure the C Value

To find the C value, follow these steps:

1. Set the multimeter to measure capacitance.
2. Connect the multimeter leads to the C terminals on the fan coil meter.
3. Record the reading displayed on the multimeter.

Practical Advice

• Consult the fan coil specifications to understand the acceptable C value range.

Step 4: Measure the S Value

Next, measure the S value:

1. Change the multimeter setting to measure resistance.
2. Connect the multimeter leads to the S terminals.
3. Note the resistance reading.

Understanding S Value

• The S value indicates the starting resistance; a significantly low or high reading may indicate a problem.

Step 5: Measure the R Value

Finally, check the R value:

1. Keep the multimeter on the resistance setting.
2. Connect the leads to the R terminals.
3. Write down the reading.

Importance of the R Value

• The R value is crucial for determining the running performance of the fan coil.

Conclusion

After completing these steps, you should have all the necessary readings (C, S, R) from your fan coil meter. If any of the values are outside the acceptable range, consult a professional for further diagnosis. By performing these checks yourself, you can potentially avoid costly repairs and ensure your cooling system operates efficiently. Keep this guide handy for future reference as you maintain your home cooling systems.