High
2.08 on Johnson Starley Aquair S 10

Your boiler's internal computer has identified a significant fault within the control system that is preventing the unit from operating safely.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

34

From this model's manual
Verified against the Johnson Starley/Johnson Starley Aquair S 10 installation & service manual, page 12.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

2.05View →2.06View →

All 93 fault codes on the Aquair S 10

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

0.450.460.470.480.490.500.510.530.540.550.560.580.590.600.630.650.660.680.700.710.730.750.760.780.800.820.840.860.880.900.920.950.970.991.021.041.071.091.121.151.171.201.231.261.291.321.351.391.421.451.491.521.561.591.631.671.711.751.791.831.871.911.951.992.042.132.172.222.262.312.362.402.452.502.552.602.652.702.752.792.842.892.942.993.043.093.143.193.24Faulty fanFaulty PCBFaulty sensor

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