What does the Heatline S.41 fault code mean?

Your boiler has detected that the water pressure inside the system is too high, which can put unnecessary stress on the internal components.

How much does it cost to fix Heatline error code S.41?

Typical repair cost for the Heatline S.41 fault is £0-120 including labour.

Heatline S.41 Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

High pressure value

Community-sourced, unverified

We could not tie this code to a specific manual. Treat it as indicative only.

DIY fix possible

Check that the filling loop valves (under the boiler) are tightly closed.Locate a radiator bleed valve and use a key to release water into a container until the pressure gauge returns to 1.5 bar.Restart the boiler to clear the code.

Find a Gas Safe engineer

Search the official register →

Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like S.41: no call-out fees, no surprise bills.

Approved partner

Domestic Appliance Guard

Unlimited call-outs, 24/7 helpline, no price-hike promise

Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

F.22View →F.75View →S.42View →

All 111 fault codes on the CaprizPlus 24a

Seeing a different code? Every code this model can display, in one place.

d.00 d.01 d.02 d.08 d.09 d.10 d.16 d.17 d.18 d.20 d.22 d.23 d.33 d.34 d.35 d.36 d.40 d.41 d.44 d.67 d.68 d.69 d.71 d.80 d.81 d.82 d.83 d.85 d.93 d.94 d.96 Err F00 F01 F10 F11 F20 F22 F23 F24 F26 F27 F28 F29 F32 F49 F61 F62 F63 F64 F65 F67 F68 F70 F71 F72 F73 F74 F76 F77 F83 F84 F85 F86 P.01 P.02 P.03 P.05 P.06 P.07 S.00 S.01 S.02 S.03 S.04 S.05 S.06 S.07 S.08 S.10 S.11 S.13 S.14 S.15 S.16 S.17 S.20 S.21 S.23 S.24 S.25 S.26 S.27 S.28 S.30 S.31 S.32 S.34 S.35 S.36 S.37 S.53 S.54 S.58 S.90 S.92 S.95 S.96 S.97 S.98

Related guides you might find useful

Boiler keeps losing pressure

Six most common causes of dropping pressure.

Read →

Low pressure — repressurise guide

Step-by-step using the filling loop.

Read →

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Your boiler has detected that the water pressure inside the system is too high, which can put unnecessary stress on the internal components.

What the manual says

DIY fix possible

Avoid the next call-out bill

Related fault codes

All 111 fault codes on the CaprizPlus 24a

Related guides you might find useful

Boiler keeps losing pressure

Low pressure — repressurise guide

Yellow or orange flame — CO safety

Recently viewed