Potterton Boiler E135 Fault Code
The Potterton fault code E135 gas supply interuption Q & A or require an engineer for an emergency boiler repair.
The Potterton Boiler Fault Code E135 Error Common Q & A
Just below, we have a list of common questions relating to the E135 fault code on the Potterton boiler.
- What does the E135 fault code mean on my Potterton boiler?
- Why does my Potterton boiler lockout when it displays a fault code?
- How do I reset my boiler to clear the E135 fault code?
- Is there a way to figure out if my boiler is dangerous?
- What can cause an internal gas supply fault in my Potterton boiler?
- What does the gas valve do on my boiler?
- How will my boiler engineer know if the gas valve is faulty?
- The valve isn’t sticking, what else can be tested?
- If I need a new gas valve, how much is it going to cost?
- What does the PCB do on my Potterton boiler?
- How can I determine if the PCB is faulty?
- Can a Gas Safe engineer check the PCB to see if it’s faulty?
- How much is a replacement PCB going to cost on my Potterton boiler?
- Why would have my PCB failed?
- Should I replace the PCB, or buy a new boiler?
What does the E135 fault code mean on my Potterton boiler
If the display panel on your Potterton boiler is showing the E135 fault code, there’s been an interruption in the gas supply. However, like most gas supply issues, this isn’t an error that’s external to the boiler.
Typically, when there’s an issue with the gas supply, your engineer would check pipework, and the meter. But in this case, it’s an error inside the boiler that’s causing the gas supply issue.
Why does my Potterton boiler lockout when it displays a fault code
All modern boilers have a fault code system built into the appliance. It makes diagnosing a problem much quicker, rather than having to fault find from scratch.
And, the lockout is a way for the boiler to isolate itself from danger. In some instances, the danger could be to people in the property. For instance, the boiler is letting too much gas into the burner.
In other instances, a boiler will lockout to protect internal components from being damaged, more so than they already are.
How do I reset my boiler to clear the E135 fault code
The reset isn’t a way to fix your boiler. It’s only to be used when the problem has been fixed by a qualified engineer. If you reset your boiler and it operates for even a few minutes, there’s a chance it could be causing damage to components or operating dangerously.
Is there a way to figure out if my boiler is dangerous
Gas appliances should only be worked on by Gas Safe engineers. In the case of the E135 fault code, there’s a good chance that if a reset was to trick the boiler into working, even temporarily, it could be dangerous.
So, don’t take any chances. Switch off your appliance and speak to a Gas Safe registered engineer. They’ll diagnose the fault, fix the problem, and reset your boiler for you.
What can cause an internal gas supply fault in my Potterton boiler
According to the fault code, this is a fault that is limited to gas supply in the boiler, rather than to the boiler.
Typically, your engineer will start with the most obvious components first, including the:
- Gas valve
- Printed circuit board (PCB)
What does the gas valve do on my boiler
The gas valve is what controls the supply of gas to the burner. It gives and receives signals to the PCB. It’s the PCB that tells the gas valve when to open, and by how much. For instance, if you turn down your heating, the PCB tells the valve to partially close.
How will my boiler engineer know if the gas valve is faulty
If the E135 fault code is being displayed, there’s a chance that the valve is stuck closed. Like all mechanical parts, gas valves can seize over time. When they do, that’s not going to allow sufficient gas into the burner.
To inspect the gas valve, your engineer will need to take apart your boiler, and remove the valve. They’ll want to check the operation from closed-open (and back again) is smooth. If it’s not and they can’t free it completely, they’ll need to replace it.
The valve isn’t sticking, what else can be tested
If the operation of the valve seems fine, the valve can be tested using a multi-meter. Your boiler repair engineer will be able to determine if the valve is getting enough power. If it’s not, they’ll need to determine if the problem is with the gas valve, or the connections/wiring to it.
If it’s the valve that’s the problem, a replacement is the only option. However, on some occasions, loose or damaged wires and/or connections can cause the problem. These can either be replaced or secured, to fix the valve and clear the E135 fault code on your Potterton boiler.
If I need a new gas valve, how much is it going to cost
A typical gas valve replacement is going to cost in the region of £300. That said, the price will vary depending on the exact model of boiler you own.
Parts will need to be ordered from a local plumbing merchant (usually delivered next day), and the job itself will take roughly 1 working day.
What does the PCB do on my Potterton boiler
The PCB is the heart of your boiler. It controls all electronic components and is even the source of fault codes that are displayed on the control panel when there’s a problem.
And, with every problem that occurs, the PCB needs to be ruled out as the root cause. After all, if the PCB is showing a fault code, but the component is faulty, there’s a chance that the fault code being displayed isn’t correct in the first place.
How can I determine if the PCB is faulty
You won’t be able to tell for sure whether the PCB is faulty without a Gas Safe boiler engineer. However, a faulty PCB will usually lead to a boiler that operates in an intermittent manner.
This might mean turning on and off randomly, LED lights flickering, and heating/hot water not getting up to temperature. Essentially, any sign of the boiler not working as it should, could be linked to the PCB.
Can a Gas Safe engineer check the PCB to see if it’s faulty
Like the gas valve on your boiler, your Gas Safe repair engineer will be able to check the PCB using a multi-meter. This determines if the unit has power. If the connections and wiring are secure, not damaged, and there’s no power to the PCB, it’s likely a replacement is going to be needed.
How much is a replacement PCB going to cost on my Potterton boiler
Boiler repair costs are rarely cheap. And, the PCB is one of the most expensive components to replace. For many Potterton boilers, the price could reach £500 or more for a replacement.
Why would have my PCB failed
Like most boilers, old age is a big killer. However, it’s worth having the engineer check that your boiler isn’t leaking.
Components like the heat exchanger and pump are prone to leaking. And when they do, they can cause damage to all components that are electrical. Leaking boilers can slowly but surely, damage all components in your boiler.
And, that’s going to mean that even if you do replace the PCB, many other of the important components are likely to fail soon too. A quick visual inspection from an engineer will highlight any leaks, as well as any burnt-out connections that have been caused by these leaks.
This problem here, is one that needs to be fixed before replacing the PCB (or any other component for that matter).
Should I replace the PCB, or buy a new boiler
Once repairs start heading towards £500 and beyond, it makes sense to get a handful of quotes for a new one to be installed. Many manufacturers offer a warranty on their boilers that are 5-years or more. And, that’s going to mean for that period, you’ll not be hit with expensive repair bills like this one.
Combined with additional energy efficiency and reduced fuel bills, you could end up saving money, rather than paying to keep your old boiler alive.
So, get your engineer to check the condition of all expensive boiler components. And, if they’re not in good condition, consider getting a few quotes.
Other Potterton boiler issues
For more boiler issues regarding the Potterton Boiler then please visit the Potterton Boiler Problems And Cures page.