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.