The wall-hung boiler showing E7 usually indicates that some problem was found during the inspection of the machine. This can involve a variety of possibilities, such as low water pressure, pump problems, freeze failure and so on. These possible causes are analyzed in detail below and how to deal with them accordingly.
1. Check the water pressure.
The proper working of a wall-hung boiler requires a suitable water pressure. Low water pressure may cause the wall-hung boiler to not work properly, showing an E7 fault**. Here's how to deal with this:
Open the water supply valve of the wall-hung boiler and check whether the water pressure gauge shows that it is at 1-15bar. If the water pressure is too low, you need to rehydrate.
Close the water supply valve of the wall-hung boiler, open the faucet and release the water until the water pressure returns to normal. Note that during the replenishment process, observe the changes in the water pressure gauge to avoid excessive water pressure.
2. Check the water pump.
The water pump is an important part of the wall-hung boiler and is responsible for feeding cold water into the water heater for heating. If the pump fails, it may cause the wall-hung boiler to show an E7 fault**. Here's how to deal with the pump problem:
Open the panel of the wall-hung boiler, find the water pump, and check if its power supply is connected properly. If the power connection is poor, it needs to be reconnected.
Check the pump for blockages or damage. If the pump is clogged, you can try to clean it; If the pump is damaged, it needs to be replaced.
Check the rotor of the water pump for damage. If the rotor is damaged, it needs to be replaced.
When dealing with water pump issues, safety needs to be taken into account. Do not disassemble the panel of the wall-hung boiler or touch the hot water at will, so as to avoid scalding or other safety problems.
3. Check for antifreeze failures.
When the wall-hung boiler shows an E7 fault**, it may also be caused by an antifreeze failure. This usually happens in winter, when the machine detects that the temperature of the water channel is below 3°C, the freeze protection is automatically activated. Here's how to deal with antifreeze failures:
Check that the water in the pipes and radiators is not frozen. If the waterway is frozen, you can use a tool such as a hair dryer or a small sun to blow dry the frozen pipes and radiators.
If the lines and radiators are not frozen, but the wall-hung boiler still shows an E7 fault**, it may be due to a faulty freeze sensor. At this time, you need to contact professional maintenance personnel for maintenance.
4. Check the thermostat and waterway.
In addition to the above reasons, the wall-hung boiler showing an E7 fault** may also be related to the thermostat or water circuit. The thermostat is an important part of the wall-hung boiler, which is responsible for controlling the heating temperature of the wall-hung boiler. If the thermostat fails, it may cause the wall-hung boiler to not work properly. Here's how to deal with thermostat and waterway problems:
Confirm if there is a problem with the temperature switch. If the thermoswitch is damaged, it needs to be replaced.
Check that the waterway is in good condition. If there is a problem such as a leak or blockage in the waterway, the relevant parts need to be repaired or replaced.
When dealing with thermostats and waterways, safety is also important. Do not disassemble the panel of the wall-hung boiler or touch the hot water at will, so as to avoid scalding or other safety problems.
5. Contact a professional.
If none of the above methods can solve the E7 fault**, it is recommended to contact a professional maintenance personnel for processing. Professional maintenance personnel have a wealth of experience and skills to diagnose and resolve faults quickly and accurately. At the same time, they can also provide security guarantees to avoid security issues during processing.
It should be noted that when dealing with wall-hung boiler failures, it is important to follow the principle of safety first. Do not disassemble the panel of the wall-hung boiler or touch the hot water at will, so as to avoid scalding or other safety problems. At the same time, it is necessary to stay calm and do not operate blindly, so as not to aggravate the failure or cause unnecessary losses.
6. Preventive measures.
In order to avoid E7 failure in the wall-hung boiler**, the following precautions can be taken:
Regularly check the water pressure and water quality of the wall-hung boiler to ensure that the water pressure is within the normal range and the water quality is clean and free of impurities.
Clean the water pump and filter of the wall-hung boiler regularly to prevent clogging and damage.
When using a wall-hung boiler in winter, it is necessary to pay attention to anti-freezing protection to avoid freezing of pipes and radiators.
Regularly check the working status of thermostats and waterways and other components, and find and deal with faults in time.
Through the implementation of the above preventive measures, the possibility of E7 failure of the wall-hung boiler can be effectively reduced, the service life of the wall-hung boiler can be prolonged, and the use effect can be improved.
In short, dealing with the E7 fault of the wall-hung boiler shows that it is necessary to consider a variety of possible causes and take corresponding treatment methods. In the process of processing, it is necessary to pay attention to safety and follow the principle of safety first. At the same time, it is necessary to strengthen the implementation of preventive measures to reduce the occurrence of failures. Through the scientific and reasonable use and maintenance of wall-hung boilers, it can better serve us and bring more convenience and comfort to our lives.