What does the Glow-worm S.34 fault code mean?

Your boiler has automatically switched on its internal protection mode because it has detected very cold temperatures, aiming to prevent its pipes from freezing.

How much does it cost to fix Glow-worm error code S.34?

Cost varies. Contact a Gas Safe registered engineer for a quote.

Glow-worm S.34 Fault Code: What It Means & How to Fix It

What the manual says

Manufacturer manual

The frost protection function is activated.

Shared across the Flexicom 24c / 28c range

This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.

DIY fix possible

Check if your heating is set to an 'Off' or 'Frost' settingEnsure your boiler is left switched on at the power supply so the system can protect itselfWait for the boiler to return to normal operation once the ambient temperature increases

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Boiler cover options

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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.39 S.41 S.42 S.46 S.53 S.54 S.58 S.76 S.88 S.91 S.96 S.98

Your boiler has automatically switched on its internal protection mode because it has detected very cold temperatures, aiming to prevent its pipes from freezing.

What the manual says

DIY fix possible

Avoid the next call-out bill

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

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