What the manual says
Manufacturer manualStandby
Shared across the 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 that your room thermostat or smart controller is set to a temperature higher than the current room temperatureEnsure your boiler's timer or programmer is set to 'On' for heating or hot waterIf the boiler remains in standby but you have no heating or hot water, turn the boiler off at the fused spur for 30 seconds and switch it back on to reset it
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Related fault codes
All 104 fault codes on the 825 Combi
Seeing a different code? Every code this model can display, in one place.
1.01.0.01.0.21.11.21.31.3.11.41.4.11.4.21.4.32.12.22.2.12.2.22.2.32.2.42.32.3.12.42.4.12.4.22.4.32.53.13.23.2.23.2.43.2.53.2.63.2.84.14.24.2.14.2.24.2.34.2.44.2.54.2.64.2.74.34.44.4.15.16.16.1.66.26.2.16.2.26.2.56.2.66.36.3.17.17.27.2.17.2.27.37.3.17.47.4.17.4.27.57.5.18.18.28.2.58.39.19.29.2.19.39.3.19.3.29.3.39.3.49.49.4.29.510.111.1152840110118125130133134135321384E15E20E28E110E118E125E128E130E133E160