Biasi Boiler ER06 Fault Code
The Biasi fault code ER01 related to the central heating NTC temperature probe which we include Q & A or require an engineer for an emergency boiler repair.
The Biasi Fault Code ER06 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 ER06 fault code mean on my Biasi boiler?
- If I reset my boiler, will it clear the ER06 fault code from the display panel?
- Why does my boiler lockout in the first place?
- What’s the most likely cause of the ER06 fault code?
- The temperature probe is in good condition, what else could be the problem?
- How could the pump cause the ER06 fault code to be displayed?
- How can my boiler repair company check the condition of the heating pump?
- The pump seems to be the problem, how much is it going to cost to fix?
- What kind of blockages should my engineer look out for in the boiler?
- How could airlocks affect my boiler’s ability to operate?
- My boiler engineer thinks the PCB is the problem, is this possible?
- If my PCB needs replacing, how much should I expect to pay?
What does the ER06 fault code mean on my Biasi boiler
If you’ve noticed some problems with your Biasi boiler, it’s likely you’ll see a fault code on the display panel. In the case of the ER06 fault code, there is a problem that relates to the central heating NTC temperature probe.
If I reset my boiler, will it clear the ER06 fault code from the display panel
The reset function on your Biasi boiler isn’t designed to be used to fix problems. Instead, it’s to be used after a problem is fixed. Currently, your boiler is likely to have locked out. And, that means it’s not going to work until the fault related to the central heating temperature probe has been found and fixed.
Why does my boiler lockout in the first place
Your boiler’s heart is the printed circuit board (PCB). This monitors a range of sensors, including the central heating temperature probe. Alongside this, it gives and receives signals to all electrical components, telling them when to work, and telling them when to stop.
If it notices that the temperature probe for central heating has dropped below the correct temperature, or that it’s overheating, the boiler will lockout. It won’t work again until the problem is fixed, and the boiler is reset.
One reason it does this, is to ensure that any damage caused to internal components due to the fault, doesn’t get any worse; it’s saving you money on repair bills.
More importantly, lockouts can isolate boilers from being dangerous, keeping everyone in your property safe. So, don’t keep trying to reset your boiler. Call a Gas Safe repair company to help you find and fix the problem.
What’s the most likely cause of the ER06 fault code
It goes without saying that the first place your boiler repair company needs to look, is the central heating temperature probe. The PCB is relying on accurate temperature readings from the probe. If they’re even a little off 100% correct, the PCB will see the boiler is working outside of recommended tolerances and lock out the appliance.
Your Gas Safe boiler repair company will be able to test the temperature probe using a multi-meter. This device can help determine if the probe and/or the wires and connections to it are the issue, or whether the issue lies elsewhere.
If wiring and connections are in good condition, but the temperature probe still isn’t getting power, it’s likely the central heating temperature probe is going to need to be replaced.
The temperature probe is in good condition, what else could be the problem
With the most obvious cause of the fault eliminated, your boiler engineer is going to need to investigate the problem further. They’ll want to check the:
- Pump
- Heating system for blockages
- Heating system for airlocks
- PCB
How could the pump cause the ER06 fault code to be displayed
The pump is one of the most overworked parts in a boiler, so they do wear out over time. Your boiler engineer will need to check that the pump isn’t just operational but is on the correct speed setting.
If the pump isn’t moving freely, is blocked, incorrectly installed or has electrical issues, it’s not going to provide the circulation the boiler needs to heat your property. The PCB will notice this due to monitoring the central heating temperature probe, and lockout the boiler.
How can my boiler repair company check the condition of the heating pump
The first thing your boiler repair company needs to check, is that the pump is installed horizontally. If it’s not, that’s going to mean circulation is limited. More importantly, it’s going to mean that the pump’s shaft and bearings wear out long before their time.
With those checks complete, they’ll want to ensure that the pump operates freely, isn’t clogged with heating sludge and is free from airlocks. Any form of blockage is going to restrict flow and cause water to exit the boiler at a higher temperature than it should. Eventually, that’s going to lead to a lockout.
Another thing worth looking out for, is any sign of water damage. Heating pumps are prone to leaking via their seals. These can degrade over time, be put under excess pressure by the pump being on too high a speed setting, or the pump being blocked.
If the pump’s seals are leaking, it’s essential to get them replaced as soon as possible. Not only will it protect the integrity of the pump, it’s going to protect other parts too.
If the pump was to leak on electrical parts in the boiler, it could cause hundreds of pounds worth of damage. In some instances, the damage can be so expensive, that it makes more sense to simply replace the appliance.
The pump seems to be the problem, how much is it going to cost to fix
It’s not uncommon to recondition boilers by replacing the central heating pump. We’d advise going for a high quality brand such as Grundfos. Depending on the exact pump you need for your boiler, the cost could be in the region of £225-300, and the job is likely to take around one day to complete.
What kind of blockages should my engineer look out for in the boiler
Your boiler repair company is going to be looking for blockages in important components such as the pump, and the heat exchanger.
The pump is prone to blockages from heating sludge (rust from the heating system’s internals), which is going to restrict circulation.
The heat exchanger is more prone to getting clogged up with limescale (minerals in heating water). This can cause water to burn hotter than it should, triggering an overheat on the temperature probe. It can also weaken and crack the heat exchanger, meaning a replacement is likely to be needed.
Your boiler repair company will want to run hot flush using specifically designed heating chemicals. This will clear most of the heating sludge and limescale.
They’ll then fit a magnetic system filter (designed to catch heating sludge), and a limescale filter (designed to catch limescale). This will help to reduce the risk of these kind of blockages occurring again.
How could airlocks affect my boiler’s ability to operate
Airlocks are much like limescale and heating sludge blockages; they reduce the boiler’s ability to circulate water and can cause an overheat.
Your boiler repair company will want to bleed all radiators and towel rails. Moving onto the boiler, they’ll also want to ensure that the pump is bled, via the specifically designed bleed screw.
If this is the problem, after bleeding all parts of the central heating system, a reset will clear the ER06 fault code.
My boiler engineer thinks the PCB is the problem, is this possible
With the most obvious potential faults checked, it makes sense to check the PCB. The PCB monitors a range of sensors, ensuring the boiler is working within tolerances. When it’s not working within tolerances, it’s going to lead to the boiler locking out.
But, if it’s the PCB that’s faulty, and not the temperature probe, there’s a good chance it’s receiving the wrong signals from the probe.
As with all electrical components, your boiler repair company can check the PCB using a multi-meter. It might be something as simple as a loose connection that’s causing the problem. But, in extreme cases, it could have been damaged by water, possibly from blown pump seals; that’s going to mean a replacement is needed.
If my PCB needs replacing, how much should I expect to pay
Unfortunately, the PCB on your boiler is the most expensive part to replace. Expect to pay around £400-500, depending on the exact Biasi boiler that you own.
Other Biasi boiler issues
For more boiler issues regarding the Biasi Boiler then please visit the Biasi Boiler Problems And Cures page.