9 Common Eccotemp Mini Tank Water Heater Problems Troubleshooting

common Eccotemp Mini Tank Water Heater problems troubleshooting
common Eccotemp Mini Tank Water Heater problems troubleshooting

Need help with your Eccotemp Mini Tank Water Heater? If this describes you, know that you are not alone.

Many people have reported having difficulties with their Eccotemp Mini Tank Water Heater, which may vary from mildly annoying to very problematic, necessitating the assistance of a trained technician.

Here, we will discuss the top 9 most common problems with the Eccotemp Mini Tank Water Heater and provide troubleshooting tips for resolving them on your own. If you want to learn more, keep reading.

Common Eccotemp Mini Tank Water Heater Problems Troubleshooting

  1. Not Enough Hot Water

If you’re experiencing a low-hot-water output from your Eccotemp Mini Tank Water Heater, there could be several factors at play. The most common causes of insufficient hot water are:


  • The flow rate of your faucet is too high for the heater to handle. The Eccotemp Mini Tank is designed for a maximum flow rate of 2 GPM (gallons per minute). If you’re using a higher flow rate, it can reduce the output temperature of the water.
  • The Eccotemp Mini Tank might be undersized for your home’s needs. If you have multiple faucets running at the same time, or if you have large fixtures that need a lot of hot water, the Mini Tank may not be able to keep up. Consider a larger water heater that can provide more hot water.
  • The Mini Tank might not be getting enough electricity. Check the power cord and make sure it’s securely plugged into an outlet. If it is, then check the breaker box to make sure it’s receiving enough power.
  1. Unit Is Too Loud

If your Eccotemp Mini Tank Water Heater is too loud, there are several possible causes. First, it could be due to a faulty or worn-out fan motor.

In this case, you should consider replacing the fan motor. You can also check if any of the exhaust tubes have become clogged.

If so, they should be cleaned and replaced as needed. Another cause of loud noises could be a buildup of sediment in the tank. Sediment can reduce efficiency and also cause extra noise.

loud noise

To avoid this issue, you should flush the tank every three to six months. Additionally, make sure that the mounting brackets on the tank are tightened correctly and that the tank is not sitting unevenly.

If none of these solutions work, you may need to contact a professional for further assistance.

  1. Leaking Water

If your Eccotemp Mini Tank Water Heater is leaking, it may be due to a few different issues. First, check the fittings of the pipes that connect the water heater to your plumbing system.

Make sure they are secure and there are no loose connections. You may also want to check the tank itself for any cracks or damage that could be causing a leak. If you find any, replace the part as soon as possible.

If the fittings and the tank are in good condition, the next step is to check the pressure relief valve. This valve is responsible for regulating the pressure in your water heater and should not be leaking.

leaking water

If it is leaking, it means the valve is faulty and needs to be replaced.

Finally, if none of these solutions solve the problem, you may need to contact an Eccotemp technician for assistance. They will be able to diagnose and repair the issue quickly and effectively.

  1. The Unit Is Not Heating the Water

If your Eccotemp Mini Tank Water Heater isn’t heating water, the first thing you should do is check the power source. Make sure that the unit is plugged in and has power.

If it is, then there are a few other potential causes why your heater may not be heating up. One possible cause is that the thermostat or temperature control is set too low.

Check the settings to make sure that it’s set to a higher temperature and then try turning it up a few degrees at a time until it starts heating up.


Another potential cause is that there may be mineral buildup blocking the heating element. If this is the case, you’ll need to descale the unit by draining the water and flushing it with a vinegar-water solution.

Be sure to follow all safety precautions when dealing with the inside of the unit. But, if these solutions don’t work, you may need to replace the heating element entirely.

This process will require professional help, so contact an authorized service technician if your Eccotemp Mini Tank Water Heater still isn’t working properly.

  1. Unit Is Not Compatible With Low Water Pressure

The Eccotemp Mini Tank Water Heater is designed to work with water pressure from 20-80 psi. If you have lower water pressure, then it is likely that the unit will not work correctly.

This is because the water pressure needs to be high enough for the heater to create hot water.

hot water

Fortunately, there are a few solutions that can help you overcome this issue. First, you can try using an adjustable pressure regulator to increase the water pressure going into the unit.

This will help the unit function correctly and provide enough hot water. You can also look into getting a booster pump, which will increase the water pressure in your home.

This may be more expensive than an adjustable regulator, but it is a more permanent solution and will help keep your Eccotemp Mini Tank Water Heater functioning properly.

Finally, if you still have problems with low water pressure, then you may need to get a larger water heater that can handle lower water pressure.

  1. The Unit Is Not Turning On

If your Eccotemp Mini Tank Water Heater is not turning on, there are several potential causes.

The most common issue is a lack of power. Check to ensure that the unit is plugged in and receiving power from a working outlet.

If this does not fix the issue, then you may need to check the circuit breaker, fuse box, or wiring to make sure everything is in working order.

If the power source is functioning properly and the unit is still not turning on, the problem could be a faulty temperature thermostat.

To check, locate the thermostat on the back side of the unit and turn the dial to test for resistance. If there is no resistance, then the thermostat needs to be replaced.

You can also check the heating element to make sure it is not burned out or loose. If the element is loose or not functioning, then it needs to be replaced.

  1. Overheating

One common issue with the Eccotemp Mini Tank Water Heater is that it can overheat. This can be caused by a few different things, such as having a blocked exhaust vent or incorrect settings on the thermostat. If your unit is overheating, here are some solutions you can try:


  • Make sure your exhaust vent is not blocked or obstructed in any way.
  • Check the thermostat and make sure it is set at the correct temperature.
  • Make sure the water heater is installed in a well-ventilated area.
  • If you have an older model, make sure to check the heating element for any buildup or debris. Clean if necessary.
  • Check the temperature and pressure relief valve to make sure it is functioning properly.
  • Contact Eccotemp customer service for further assistance if none of these solutions resolve your problem.
  1. Flames Coming Out Of The Unit

If you’re seeing flames coming out of the Eccotemp Mini Tank Water Heater, it could be due to a few different causes.

The first cause could be because of an obstructed vent pipe, which can cause flames to shoot out of the unit. This can be easily fixed by cleaning out the vent pipe and making sure that it’s clear of any blockages.

Another cause could be the air intake and exhaust being blocked, which can also cause flames to come out of the unit. To fix this issue, make sure that the air intake and exhaust are both clear and unobstructed.


The last potential cause could be a gas leak in the unit, which can be very dangerous and should be addressed immediately. If you suspect a gas leak, contact a professional plumber or electrician right away.

They can inspect the unit and repair any gas leaks that may be present.

  1. Pilot Light Keeps Going Out

If the pilot light on your Eccotemp Mini Tank Water Heater keeps going out, the most likely cause is a faulty thermocouple.

The thermocouple is a safety device that will shut off the gas if the pilot light goes out. To fix this, you’ll need to replace the thermocouple.

First, turn off the gas supply and disconnect the power to the unit. Next, remove the burner assembly and locate the thermocouple near the pilot light.

gas supply

You’ll need to unscrew the thermocouple from its bracket and unplug the wire from the gas valve.

Once disconnected, you can now replace the old thermocouple with a new one. Be sure to attach the wire to the gas valve before securing the thermocouple back into its bracket.

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