What should I do if the wall-hung boiler does not ignite? ——Common causes and solutions
Wall-mounted boilers are commonly used heating equipment in modern households, but they may encounter problems of not igniting during use. This article will analyze the wall-hung boiler failure topics that have been hotly discussed on the Internet in the past 10 days and provide you with structured solutions.
1. Common reasons why wall-hung boilers do not ignite

| Cause of failure | Proportion (whole network data) | Typical symptoms |
|---|---|---|
| Gas supply issues | 32% | No response in ignition, gas valve does not open |
| Ignition electrode failure | 25% | There is a sound but no fire |
| Abnormal water pressure | 18% | The display shows the water pressure abnormal code |
| Air pressure switch failure | 15% | Fan runs but fails to ignite |
| circuit problem | 10% | No reaction at all |
2. Step-by-step troubleshooting guide
Step 1: Check the gas supply
1. Confirm whether the gas valve is open
2. Check whether the gas meter balance is sufficient
3. Smell for gas leakage
Step Two: Check Water Pressure
1. Observe the pressure gauge. The normal value should be between 1-1.5bar.
2. If the water pressure is too low, you can replenish water through the water replenishment valve.
3. If the water pressure is too high, drain the water through the drain valve.
Step Three: Check the Ignition System
1. Listen for a "click-click" ignition sound
2. Check whether the ignition electrode has carbon deposits
3. Gently wipe the electrode head with fine sandpaper
Step 4: Check the smoke exhaust system
1. Confirm that the exhaust pipe is not blocked
2. Check whether the fan is operating normally
3. Test whether the air pressure switch is working properly
3. Common fault codes of different brands
| brand | Common fault codes | meaning |
|---|---|---|
| power | F22/F28 | Ignition failure/gas supply problem |
| Bosch | EA/EE | Ignition failure/wind pressure failure |
| Rinnai | 11/12 | Abnormal ignition/gas valve failure |
| Ariston | E1/E4 | Ignition failure/abnormal water pressure |
4. Safety precautions
1. Never disassemble gas components by yourself
2. If you smell gas, immediately close the main valve and ventilate the air
3. For complex faults, it is recommended to contact professional after-sales service
4. Perform regular equipment maintenance (once a year is recommended)
5. When does it require professional maintenance?
1. Failed to ignite after multiple attempts
2. Abnormal noise or smell occurs in the equipment
3. The display keeps reporting errors and cannot be reset.
4. Gas-related components malfunction
Through the above structured troubleshooting methods, most wall-hung boiler non-ignition problems can be solved. If the problem is still not resolved, it is recommended to record the fault phenomenon and code, and contact the brand’s after-sales service for professional support.
Note: The data in this article comes from the statistics of major appliance forums, repair platforms and e-commerce after-sales evaluations in the past 10 days, which has high reference value. There may be differences in different models of wall-mounted boilers, please refer to the specific product instructions.
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