If you turn the hot water tap and cold water runs out, then the upper thermostat is damaged. But if the water is hot that becomes later becomes cold, then you have a damaged lower thermostat.
In this manner, do you have to drain a hot water heater to change the thermostat?
Always disconnect the power or shut off the breaker before doing any work on a water heater. To change thermostats, you will need to remove the access panel and safety cover (do this for both upper and lower access panels on dual element units).
Similarly one may ask, how do I reset the thermostat on my Rheem water heater?
Rheem Gas Water Heater Reset Button
- Raise the thermostat temperature to 80 degrees Fahrenheit.
- Find the red rubber boot covering the left button on the back of the air conditioner.
- Press the reset button once with your finger.
How do I test a Rheem water heater thermostat?
How do you change a thermostat on a Rheem water heater?
How do you check a water heater thermostat?
Test the lower portion of the thermostat, by touching one lead to the common terminal (next to the temperature setting) and the second lead to the left heating element terminal. If the water in the tank is below the thermostat’s set temperature, the multimeter should read close to zero ohms of resistance.
How do you set the thermostat on a Rheem water heater?
Pull the insulation from the cavity behind the covers to expose the thermostats. Insert a small flat-head screwdriver into the slot on the thermostat dial. Rotate the thermostat to your desired temperature. Make sure to adjust both thermostats if your Rheem water heater has two access covers.
How much does it cost to replace a water heater thermostat?
The average thermostat replacement cost is between $100 and $300. Most other repairs are equally affordable. There are two main types: gas and electric. A gas unit works by way of a gas flame while an electric one works using electric elements, or coils.
What is the most common problem with water heaters?
Water leaks are perhaps the most common type of water heater issue you’ll face. Any water heater will start to leak eventually, as by nature water will eventually corrode your tank and create microscopic cracks or fractures.
Where is the thermostat on my Rheem gas water heater?
Locate the gas control valve on the lower front of the water heater. The gas control valve has a red button on top and three lines connecting at the bottom. The thermostat dial is on the face of the gas control valve.
Why does my Rheem water heater keep shutting off?
The power vent water heater keeps shutting off
If your power vent water heater keeps shutting off, the thermocouple could be damaged, dirty or bent. Inspect the thermocouple. If it is damaged, replace it. If dirty, let it down for cooling and then clean.
Why is my Rheem water heater not turning on?
Check the power supply to the water heater. Check to see if a fuse has blown or a circuit breaker is tripped. Replace the fuse or reset the breaker. Ensure that the disconnect switch, if used, is in the on position.
Why is my water heater not getting hot?
If an electric water heater is not producing hot water, it could be a simple problem like a blown fuse or tripped circuit breaker. Additionally, some electric water heaters have a circuit-style safety switch located near or on the thermostat.