What is a water heater ECO switch?

Asked By: Borisov Vanshenkin | Last Updated: 21st February, 2020
Category: home and garden home appliances
4.3/5 (413 Views . 40 Votes)
An energy cut off (ECO) switch is mounted inside the probe attached to the back of the gas valve and extends inside the water heater. The ECO functions as a high limit switch. If water temperature inside the tank reaches about 190°F, the ECO disables the water heater.

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Also know, what does eco mean on water heater?

Energy Cutoff Switch (ECO) Gas water heater safety device that shuts off the gas supply to the unit if water temperature exceeds 190°F. The ECO is a single-use switch and requires complete replacement of the entire thermostat if activated.

Subsequently, question is, where is the reset button on electric water heater? The water heater reset button is the red button located on the water heater itself (just above the thermostat). Some water heaters may have two reset buttons-one for each thermostat. To access the reset button, you may have to remove the metal plate covering the thermostat that's held in place by screws.

In this regard, what causes a water heater reset button to trip?

While a bad thermostat is the most common reason your water heater's reset button may trip, it's not the only one. Other common causes include: A shorted heating element—It may be that the thermostat is working just fine and shutting off the heating element.

What does a thermal switch do on a water heater?

A thermal switch is installed in newer gas water heaters as a safety device. Blocked vents at the top and bottom of the water heater can cause excessive heat buildup inside the chamber and trip the thermal switch, shutting off the gas supply to the burner assembly.

38 Related Question Answers Found

How does a gas water heater thermostat work?

Short answer/ Gas water heater thermostat: Gas valve control has a thermostat located on the back of valve inside a copper tube that protrudes into the tank. The current increases when water temperature increases, and drops when temperature drops. Changes in the electric current cause gas control to turn ON and OFF.

Why does my tankless water heater go cold?

Another problem that tankless water heaters can run into is that of a cold water sandwich—a plumbing term given to sudden temperature fluctuations, when your tankless water heater produces hot and cold water intermittently. This can be caused by: A dirty water filter on the cold water inlet.

Can a tankless water heater be installed upside down?

Next, the isolation valves, which enable the service company to flush and clean the tankless water heater, are installed upside down. Because the isolation valves are installed upside down, there is no way to isolate the fluid to the tank, and therefore, no way to clean the tank.

How hot can a tankless water heater get?

The three temperature options available on the map are 105°F, 120°F and 140°F. EcoSmart electric tankless water heaters cannot be set higher than 140°F. Outlet temperature setting can be anywhere from 80°F to 140°F.

How do I restart my water heater?

Part 2 Pressing the Reset Button
  1. Locate the red reset button. There should be a red button in the center of the control panel.
  2. Press the button firmly. The reset button can sometimes be sticky, especially if you haven't reset the heater in a while.
  3. Wait to hear the button click.

What trips the reset button on a hot water heater?

The reset button: a red button located on the water heater itself (just above the thermostat) that trips when the water temperature exceeds 180 F. The reset button is sometimes referred to as the “ECO” (emergency cut off) or “high limit switch”.

What causes water heater to turn off?

There are eight possible reasons why your gas water heater may be shutting off.
  • A dirty or clogged air inlet screen.
  • A faulty thermopile.
  • A faulty thermocouple.
  • A gas valve that has gone bad.
  • Leaking tank.
  • High humidity.
  • Blocked exhaust vent.
  • Failing FVIR system.

Is it dangerous if the pilot light goes out on water heater?

A device called a thermocouple is heated by the pilot light flame. As long as the thermocouple remains hot, gas is supplied to the pilot light. If the pilot light goes out, the gas is shut off and there is no danger of gas accumulating because the pilot light is out.

What is the reset button on a water heater for?

Your water heater reset button is a safety device that shuts off power to your water heater when the water temperature inside it exceeds 180 degrees Fahrenheit. Side note: the reset button is also sometimes referred to as the ECO (emergency cut off) switch or “high limit safety thermostat switch”.

How do I reset my Rheem water heater?

Turn the water heater's gas valve switch to the "OFF" position, wait for a few seconds and then flip the switch to the "ON" position to reset the system.

Why is my electric hot water not working?

A water heater that produces no hot water may not be getting power, or it may have a tripped limit switch or one or more failed heating elements. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. If the breaker has tripped, switch it off, then switch it back on again.

How do I reset my heater?

Turn the power back on and then the main gas supply. Locate the reset button. It is labeled, sometimes in red. Press and hold the reset button for 30 seconds.

Why is my electric hot water heater not working?

When there's no hot water, the problem can stem from lack of power, a faulty electric thermostat or a faulty upper electric heating element. When the water's not hot enough, the problem can be an undersized water heater, crossed hot and cold connections, or a faulty heating element or thermostat.

How do you reset the pilot light on a electric water heater?

How to Light a Water Heater Pilot Light
  1. Open the door/cover over the pilot light access.
  2. Use a flashlight or a headlamp to find the burner inside.
  3. Turn the gas knob to “Pilot,” press and hold it down.
  4. While still holding the gas down, light that pilot.
  5. When the flame ignites, continue to hold the gas knob or button down for a full minute.

Why is my electric water heater tripping the breaker?

Reasons Your Water Heater Is Tripping the Breaker
The problem could be: The breaker may be worn out and trip. A wire also may be loose in the electrical panel, causing a short circuit. Your thermostat – If your thermostat goes bad, it can draw more electricity than the circuit can handle, causing the breaker to trip.

What are the signs your hot water heater is going out?

If you start to see water gathering on the floor, it is a pretty sure sign that your water heater is not doing its job. A leaking water heater should be replaced, but be sure to look into the problem before wrongly placing the blame. For example, check the surrounding pipes for leaks. Noise, noise, noise!