Biasi Boiler ER01 Fault Code
The Biasi fault code ER01 related to the ignition which we include Q & A or require an engineer for an emergency boiler repair.
The Biasi Fault Code ER01 Error Common Q & A
Just below, we have a list of common questions relating to the ER01 fault code on the Biasi Boiler.
- What does the ER01 fault code mean on my Biasi boiler?
- If I reset my boiler, will this clear the fault code from the display panel?
- What could have caused the ER01 fault code to be displayed on my Biasi boiler?
- What does the gas pressure have to do with the ER01 fault code on my Biasi boiler?
- How could the flue cause a problem with the ignition?
- How could the condensate pipe cause issues with the ignition on my Biasi boiler?
- If the gas valve is the problem with my Biasi boiler, how will my engineer know?
- My boiler engineer thinks I need a new gas valve, how much is this going to cost?
- What would the fan have to do with the ER01 fault code on my Biasi boiler?
- My boiler engineer suspects the fan needs replacing, how much is this going to cost?
- My boiler engineer thinks there is a problem with the burner, what is the most likely fault?
- If the burner on my boiler needs replacing, how much should I expect to pay?
What does the ER01 fault code mean on my Biasi boiler
If your Biasi boiler develops a problem, it will show a fault code on the display panel. When you call a Gas Safe boiler repair engineer, the fault code helps them to quickly narrow down the fault. This makes fixing the fault much quicker and easier than it would be otherwise, saving you money on repair bills.
In the case of the ER01 fault code, the problem is with the ignition. Your boiler can’t ignite, meaning your boiler engineer will need to inspect everything from gas pressure, through to blockages in airways and the supply of gas from the gas valve.
If I reset my boiler, will this clear the fault code from the display panel
The ER01 fault code is likely to lead to a boiler lockout. A lockout is when your appliance no longer works.
Boilers are controlled by the printed circuit board (PCB). Not only does the PCB tell other components when they should be operating (or not), it also monitors a range of sensors in your boiler. Sensors monitor air pressure, flame signal, water pressure and more. If your PCB receives readings that your boiler isn’t working within correct tolerances, it will lockout.
The lockout can occur for several reasons. In some instances, it’s to protect internal components from being damaged further, saving you money on repair bills. On other occasions, the lockout ensures that the boiler isn’t operating dangerously.
As the ER01 fault code is ignition related, the boiler could be dangerous. Therefore, you shouldn’t keep trying to reset your boiler to fix the problem. Instead, call a Gas Safe engineer to find and fix the fault on your boiler. Once fixed, they’ll use the reset function to clear the ER01 fault code and get your boiler working again.
What could have caused the ER01 fault code to be displayed on my Biasi boiler
Although fault codes on boilers might seem specific, they only narrow down potential problems, they don’t highlight the exact issue.
For instance, with the ER01 fault code, the issue is anything that affects the ignition on your boiler. This could include:
- Gas pressure
- Flue or condensate blockage
- Gas valve problems
- Fan
- Debris build-up in the burner
What does the gas pressure have to do with the ER01 fault code on my Biasi boiler
Like water and air pressure, your boiler’s PCB uses sensors to monitor gas pressure. If gas pressure isn’t high enough, the flame could go out, meaning the gas valve will be letting-by gas. So, if the PCB notices that the gas pressure is below working tolerance, it’s going to lockout the boiler and display a fault code.
Your boiler engineer will need to test the gas pressure into the boiler. If the gas pressure into the boiler isn’t high enough, the problem could be at the meter.
Meters have regulators which help to control the flow of gas. If this is blocked or frozen, that’s going to mean that the flow of gas is restricted, and the pressure into the boiler isn’t going to be high enough. The quick fix here is to shut off the gas supply and the switch the old regulator for a new one.
How could the flue cause a problem with the ignition
The flue on your boiler helps to vent gases from your boiler, out of your property. If there’s any obstruction or blockage in the flue, your boiler will lockout. And, that’s because the air pressure switch notices that air pressure isn’t what it should be for a safe boiler.
Your boiler engineer will need to inspect the flue. For those with a vertical flue, it’s likely that it’s been fitted without a flue guard and debris has found its way into the flue. This obstruction needs to be removed and the flue needs to be refitted with a flue guard.
How could the condensate pipe cause issues with the ignition on my Biasi boiler
Like the flue, the condensate pipe helps ensure that your boiler is safe.
Unlike the flue, the condensate pipe vents condensed gases from your boiler. The problem with condensate pipes is that they can be extremely small. If they’re not routed correctly, or the conditions outside go well below freezing, it’s likely that these condensed gases freeze.
Just like the flue, the frozen gases are going to mean that there’s a blockage in an important airway.
And, just like a small obstruction in your flue, the boiler is going to lockout due to it being dangerous for the boiler to continuing operating.
The quick fix is easy; thaw out the pipe. However, you might consider asking your engineer to fit a larger condensate pipe, lagging it, and routing it as close to vertical as possible. All these things are going to contribute to a condensate pipe that’s much less likely to freeze.
If the gas valve is the problem with my Biasi boiler, how will my engineer know
After checking things like the gas pressure, flue and condensate pipe, your boiler repair company will want to check the gas valve. This is the component that helps to regulate the flow of gas directly into the burner.
They’ll first ensure that it’s correctly adjusted. If it is, they’ll look for signs that it’s sticking. Gas valves are known for wearing and when they do, they can stick partially open or closed. This is going to lead to gas not being allowed into the burner, or gas being allowed into the burner when there’s no demand for it.
Finally, your boiler engineer will want to test the wiring harness of the gas valve. If this is faulty, the valve won’t be able to effectively communicate with the PCB, and that’s going to mean that ignition is intermittent at best.
My boiler engineer thinks I need a new gas valve, how much is this going to cost
Alongside various other tests, your boiler engineer is going to test the valve for power. If the gas valve is not showing signs of power and is beyond repair, a replacement is going to be needed.
Typically, we’d expect the price of a new gas valve to be in the region of £300 including parts and labour.
What would the fan have to do with the ER01 fault code on my Biasi boiler
The fan on your Biasi boiler is incredibly important, especially from a safety perspective. It works in conjunction with the flue to vent harmful flue gases from your property. In fact, the fan is so important, that the boiler won’t fire up until the PCB receives a signal to say that the fan is operating; it wants to know that gases can be vented from the boiler instantly.
If your fan is set to the wrong speed setting, is partially seized and therefore not working at its optimum, or is completely faulty, the boiler is going to lockout as a safety precaution.
My boiler engineer suspects the fan needs replacing, how much is this going to cost
Your boiler repair company will be able to test the fan using a multi-meter to determine if it has power. If it doesn’t have power and is beyond repair, it’s likely they’ll suggest a replacement.
Typically, you should expect to pay around £250 to replace the fan on your Biasi boiler, including parts and labour.
My boiler engineer thinks there is a problem with the burner, what is the most likely fault
If your boiler’s burner isn’t getting a steady flow of gas, it’s not going to be able to ignite, or to keep a solid flame. And, whilst things like gas pressure, airway blockages and the fan can all be to blame, so can the burner.
Burners can get blocked up with debris over time, and that causes them not only to be inefficient, but can stop them working completely. In most cases, we find that the jet supplying gas to the burner is the problem. These jets are incredibly small, so even the smallest piece of carbon could block the jet enough to stop the flow of gas.
Your boiler engineer will need to remove the jet and clear the blockage. Refitting it and resetting your boiler should clear the fault code from the display panel and get your boiler up and running again.
If the burner on my boiler needs replacing, how much should I expect to pay
Not all boiler problems can be resolved with a quick and inexpensive fix. If your boiler engineer thinks your burner is beyond repair and causing the ER01 fault code to be displayed, it’s going to need to be replaced.
Burners aren’t cheap. Typical replacement costs will be in the region of £300.
Other Biasi boiler issues
For more boiler issues regarding the Biasi Boiler then please visit the Biasi Boiler Problems And Cures page.