BoilerFaultCodesWhat the manual says
Manufacturer manualPCB is not seeing sensor. Confirm by measuring sensor resistance. Replace sensor if resistance is greater then 28K.
From this model's manual
Verified against the Johnson Starley/Johnson Starley Aquair S 10 installation & service manual.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 93 fault codes on the Aquair S 10
Seeing a different code? Every code this model can display, in one place.
0.450.460.470.480.490.500.510.530.540.550.560.580.590.600.630.650.660.680.700.710.730.750.760.780.800.820.840.860.880.900.920.950.970.991.021.041.071.091.121.151.171.201.231.261.291.321.351.391.421.451.491.521.561.591.631.671.711.751.791.831.871.911.951.992.042.082.132.172.222.262.312.362.402.452.502.552.602.652.702.752.792.842.892.942.993.043.093.143.193.24Faulty fanFaulty PCB