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Boiler Faults
Common boiler issues you can remedy
One of the most commonly searched problems is boiler pressure. so what can you do to fix this issue?
What Should the Pressure Be?
Most boilers operate best when the pressure gauge reads between 1.0 and 1.5 bar when the system is cold. When your heating is on, the pressure may rise slightly, typically sitting between 1.5 and 2.0 bar.
If the pressure falls below 1.0 bar, it’s considered low and may require topping up.
How to Check and Top Up Your Boiler Pressure
Low boiler pressure is one of the most common issues homeowners face — and it can stop your central heating or hot water from working efficiently. Thankfully, checking and topping up your boiler pressure is a simple task you can do yourself, as long as you follow the steps carefully.
How to Check Your Boiler Pressure
Locate the pressure gauge
This is usually found on the front of your boiler’s control panel. It will either be a physical dial or a digital reading.Read the current pressure
The dial will likely be colour-coded:Green zone: Normal
Red zone (low): Pressure too low
Red zone (high): Pressure too high
No heating or hot water.
No Heating or Hot Water? Simple Checks Before You Call a Boiler Engineer in Wigan
One of the most common boiler issues searched by homeowners in the UK is: “Why do I have no heating or hot water?” This can be frustrating, especially in colder months. At JJK Gas Services, our Gas Safe registered engineers in Wigan are often called out to deal with this exact issue — but before you book a callout, here are a few safe steps you can take yourself.
These tips apply to combi boilers, system boilers, and regular boilers across homes in Wigan, Leigh, Tyldesley, Atherton, and surrounding areas.
1. Check Your Thermostat Is Set Correctly
Make sure your thermostat:
Has working batteries (if wireless)
Is turned up above the current room temperature
Is set to “heating” or “hot water” mode
Old thermostats or recent power cuts can reset your heating schedule, causing boiler downtime.
2. Review Your Heating Timer or Programmer
Whether digital or mechanical, ensure:
The time and date are correct
Heating and hot water schedules are set properly
The system isn’t accidentally set to “off” or “holiday” mode
Incorrect programming is a common reason for boiler faults in Wigan homes.
3. Check the Boiler Display for Error Codes
If your boiler has an LCD screen or status lights, note any fault codes or flashing indicators. Common error messages like F22 (Vaillant) or E119 (Ideal) often relate to low pressure or system faults.
Take a photo of the display — it can help us diagnose faster when we arrive.
4. Ensure the Boiler Has Power
Basic but vital:
Check the fused spur switch is turned on
Look for any tripped switches on your fuse board
Has the boiler been turned off by accident?
Power interruptions are a top cause of boiler shutdowns — especially during stormy weather.
5. Check Your Boiler’s Water Pressure (View Only)
Low pressure is one of the most searched combi boiler faults in the UK.
Look at the pressure gauge (should be between 1.0 and 1.5 bar)
If it’s below 1.0 bar, the system may need topping up
Only top up the pressure if you feel confident — otherwise, call a professional
Don’t attempt this if you’re unsure — contact a Gas Safe engineer in Wigan.
6. Radiators Cold at the Top? Bleed Them
Cold radiators could indicate trapped air in the system. Bleeding the radiators can restore proper heating, but be aware this can also lower boiler pressure — so again, proceed with caution.
Still No Heating or Hot Water?
If you’ve checked all of the above and the problem persists, your system likely needs expert attention. Common boiler issues we fix include:
Faulty diverter valves (hot water not prioritised)
Broken thermostats or sensors
Airlocks in the system
Low water pressure
PCB and pump faults
Book a Local Gas Safe Engineer in Wigan
At JJK Gas Services, we provide fast-response boiler repair, boiler servicing, and emergency plumbing across Wigan and Greater Manchester. We’re trusted by landlords, homeowners, and businesses for honest advice and top-rated heating services.
Frozen Condensate Pipe – Common Winter Boiler Issue
What Is a Frozen Condensate Pipe?
During freezing weather, the external condensate pipe connected to your boiler can freeze, causing blockages and forcing the boiler to shut down for safety. This is one of the most searched winter boiler faults in the UK and often affects combi boilers with external pipework.
Signs Your Condensate Pipe Is Frozen
If your boiler stops working suddenly during cold weather and displays a fault code (like F1, F28, or EA), it could indicate a frozen pipe. You might also hear gurgling sounds or see water dripping from a joint in the pipe.
How to Fix It Yourself Safely
If safe to do so, pour warm (not boiling) water over the external pipe to thaw the blockage. Start at the top and work your way down. You can also apply a warm cloth or hot water bottle to help melt the ice.
Preventing Future Freezing
Insulating the condensate pipe with foam pipe lagging is a simple and effective way to prevent future freezes. A boiler engineer can also reroute or upgrade the pipework for improved protection.
Need Professional Help?
If you’re still having issues, contact JJK Gas Services, your trusted local boiler specialists in Wigan. We provide fast, reliable repairs and winter-ready boiler servicing. Call: 01942 466 486 if your still having problems.
Wigan’s Trusted Boiler Repair & Heating Experts
Why Choose JJK Gas Services for Your Heating Needs?
At JJK Gas Services, we pride ourselves on delivering fast, affordable, and professional boiler repair and plumbing solutions throughout Wigan and the surrounding areas. Whether you're dealing with a frozen condensate pipe, low boiler pressure, or no heating or hot water, our Gas Safe registered engineers are just a call away.
Fast Response – Reliable Service – Local Experts
From boiler breakdowns to annual servicing and emergency plumbing, our team ensures you stay warm, safe, and energy-efficient all year round. We work with all major boiler brands and provide honest advice with no hidden fees.
Need Help With Your Boiler or Heating?
If you’re experiencing issues or have questions about your heating system, don’t hesitate to reach out. You can contact us via phone, email, our website, or social media. At JJK Gas Services, we’re always ready to help keep your home running efficiently and comfortably. call: 01942 466 486 or visit facebook for our messaging service or book a callback through the website at
