본식영상 본식dvd - 라이프타임

• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

When a hot water tap drips or the heater just won’t kick on, the culprit is often a faulty thermocouple. This small, metal device sits on the pilot flame of a gas water heater and keeps the gas valve open only when the pilot is lit. If it fails, your heater can go cold or even pose a safety hazard. Being aware of the warning signs can help you identify issues before they become expensive repairs.

1. Pilot Flame Keeps Going Out
The most obvious symptom is that the pilot flame keeps going out. A healthy thermocouple generates a small electric current when exposed to heat. That current keeps the gas valve open. If the thermocouple is stuck in a "cold" state, the valve will close, and the pilot will extinguish. You may find yourself having to relight the flame over and over.

2. Heater Turns Off Despite Hot Water
Once the pilot is lit, the heater should remain on, warming water for the following 20‑30 minutes. A defective thermocouple will cause the gas valve to close early, despite the water remaining hot. You'll see the temperature fall suddenly, and the heater will need relighting every time.

3. Odd Odors or Loss of Heat
A malfunctioning thermocouple can trigger the safety shut‑off, ending gas flow. This may result in a faint chemical odor from the gas or, worse, no heat at all. If you notice a gas smell or the thermostat reads well below the set temperature, examine the thermocouple.

4. Pilot Flame Flickers or Looks Dim
If the thermocouple is marginal, the pilot flame may appear weak or flicker. The reason is that the gas valve opens and closes intermittently. The pilot may seem steady, 名古屋市東区 エコキュート 交換 but the control is actually unstable.

5. Inconsistent Water Temperature
Should the water temperature fluctuate wildly—from hot to lukewarm—the thermocouple may be out of calibration. A minor misalignment can make the gas valve open at incorrect times.

6. Physical Damage or Corrosion
Look for visible signs of wear on the thermocouple. Corrosion, cracks, or a broken stem indicates it can’t produce sufficient voltage. Long-term, the metal may degrade, particularly in damp or humid environments.

7. Pilot Flame Lags Behind Thermocouple Response
If you manually turn the pilot flame on and the thermocouple does not respond quickly, it may be stuck. A delayed response usually means the sensor isn’t detecting heat correctly.

8. Error Codes and Warning Lights
Contemporary gas water heaters will often show error codes if the thermocouple fails. A flashing LED or panel code may indicate a "pilot light" or "sensor" problem.

9. Odd Noises When Heater Starts
A rattling or clicking sound that occurs when the heater turns on can be a sign that the gas valve is flicking in and out—another symptom of a failing thermocouple.

10. Plumber Re‑lighting Pilot Frequently
If a plumber has to relight the pilot repeatedly over a short period, it’s a clear indicator that the thermocouple isn’t functioning properly.

Steps to Replace a Faulty Thermocouple
Shut off the gas supply and allow the heater to cool
Remove the old thermocouple using a wrench or pliers
Look for corrosion or damage; if present, replace it
Wipe down the connection points and pilot flame area
Install the new thermocouple, aligning the stem with the pilot flame
Reopen the gas, relight the pilot, and verify the heater stays on

If you’re uneasy working with gas appliances, contact a licensed plumber
Replacing it promptly can stop gas waste, restore hot water, and keep your home safe