What does the Glow-worm S.41 fault code mean?

Your boiler has detected that the water pressure inside your heating system is currently too high for it to operate safely.

How much does it cost to fix Glow-worm error code S.41?

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

Glow-worm S.41 Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

The system pressure is too high.

From this model's manual

Verified against the Glow Worm/Glow Worm Flexicom 24c 28c installation & service manual, page 46.

DIY fix possible

Locate a radiator in your home with a bleed valve.Use a radiator key to slightly open the valve and release air while catching the escaping water in a cloth or container.Monitor the pressure gauge on the front of the boiler until the needle drops back into the green 'normal' zone (usually between 1.0 and 1.5 bar).Close the radiator bleed valve tightly once the correct pressure is achieved.

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Related fault codes

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All 141 fault codes on the Flexicom 24c / 28c

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

d.00 d.01 d.02 d.05 d.06 d.08 d.09 d.10 d.11 d.13 d.14 d.15 d.16 d.17 d.18 d.20 d.21 d.22 d.23 d.27 d.28 d.33 d.34 d.35 d.36 d.39 d.40 d.41 d.43 d.45 d.47 d.50 d.51 d.58 d.60 d.61 d.62 d.64 d.65 d.67 d.68 d.69 d.71 d.80 d.81 d.82 d.83 d.85 d.88 d.90 d.93 d.94 d.96 F.00 F.01 F.10 F.11 F.13 F.20 F.22 F.23 F.24 F.25 F.27 F.28 F.29 F.32 F.33 F.46 F.49 F.61 F.62 F.63 F.64 F.65 F.67 F.68 F.70 F.71 F.72 F.73 F.74 F.76 F.77 F.78 F.83 F.84 F.85 F.86 F.87 F.88 F.89 F.97 F01 F10 F11 F13 F17 F20 F22 F25 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.39 S.42 S.46 S.53 S.54 S.58 S.76 S.88 S.91 S.96 S.98

Your boiler has detected that the water pressure inside your heating system is currently too high for it to operate safely.

What the manual says

DIY fix possible

Avoid the next call-out bill

Related fault codes

All 141 fault codes on the Flexicom 24c / 28c

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