1. Standard Water Temperature in the Water Heater
The Ariston An2 15r ei water heater requires a temperature of 80°C for optimal performance. If your household appliance fails to reach this temperature or doesn't produce hot water at all, it's crucial to inspect the components of the heater to identify and rectify any issues.
2. Causes of Your Ariston An2 15r ei Water Heater Not Producing Hot Water
Why isn't your Ariston An2 15r ei water heater delivering hot water? There are numerous factors contributing to this issue. Let's delve into them below:
2.1. Water Faucet Blockage
The lack of hot water supply from the water heater is mainly due to a blocked water faucet or obstructed water supply line from the heater. Additionally, it could be caused by blockage in the large water supply line leading to the small faucet, deformed temperature sensing tube, continuous operation of the heater leading to overload, etc.

When the water supply line encounters issues, even if other parts of the heater function properly, consumers still cannot access hot water.
2.2. Turning On the Heater When It's Empty
Turning on the heater when there's no water inside can be extremely dangerous, potentially leading to heater combustion. Therefore, when you notice the absence of hot water in the heater, check if the input water supply is sufficient.
2.3. Air Bubbles Accumulation in Ariston An2 15r ei Water Heater
This phenomenon occurs when the household water heater is too old. Additionally, leaving the heater on 24/7 can lead to excessive air bubbles and water displacement. Therefore, it's essential to turn off the heater when not in use and perform regular maintenance.

2.4. Dirty Water Filtration Equipment
After prolonged use, water filtration components are prone to dirt accumulation if not cleaned properly. This can obstruct the water supply to the heater due to the layer of dirt, resulting in a loss of heat retention.
2.5. Malfunctioning Temperature Sensor or Resistor
If the temperature sensor or resistor encounters issues, it can also prevent the water heater from producing hot water. Over time, these sensor components are susceptible to damage, leading to the heater's inability to automatically turn on and heat the water.
2.6. Weak Water Supply
If the input water pressure is too weak, the water heater will produce a very weak flow of water, resulting in insufficiently strong or warm water. This can disrupt bathing, washing, or daily activities.
3. Handling the Issue of Ariston An2 15r ei Water Heater Not Producing Hot Water
When encountering issues like the above, it's necessary to turn off the power and inspect areas such as water faucets, input water sources, or water pipes,... If the faucets and water pipes are deformed, they must be replaced. If the faucet is blocked, it needs to be cleaned and unclogged.

If users have tried all the above methods and still haven't found the issue, they need to contact service providers for assistance. For serious issues, refrain from attempting repairs at home to avoid further complications.
Above are the common causes and solutions for Ariston An2 15r ei water heater not producing hot water. We hope this information will be helpful in using your household water heater! Thank you for your continuous interest and support.