BoilerFaultCodesWhat the manual says
Manufacturer manualNo DHW Operation
Shared across the Logic Max HEAT2 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.
What causes this fault?
This fault occurs when the boiler's internal components stop responding to a request for hot water, even though the central heating continues to work. The most common reason is a failure in the communication between the flow turbine, which detects when you turn a tap on, and the diverter valve that directs heat to your water.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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All 84 fault codes on the Logic Max Heat 2
Seeing a different code? Every code this model can display, in one place.
4.24.34.44.54.64.74.84.94.104.114.134.144.154.16059.1.59.1.8121314151617181924252829303132363738435460657071758283113115116Blocked Flue/CondensateE4EAEdF9Fan FaultFdFlame LossFlame On Before Gas OnFlame on before gas valve onFlow Thermistor FaultFlow/Return ReversedFUSEGas Valve FaultH nH0Ignition LockoutL AL EL1LCDLow Mains VoltageNO CH OPERATIONNo Water FlowOutside Sensor FaultOverheat LockoutP1P4PCB FaultReturn ThermistorReturn Thermistor FaultRoom Thermostat FaultService DueService RequiredSpare PCB Not SetToo Many Restarts