Medium
NO DHW BUT CH ON on Johnson Starley J32 System ET

Your boiler is successfully heating your radiators, but it is failing to send heat to your hot water tank.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

No domestic hot water but central heating on

DIY fix possible

Check if the hot water is turned on at your external programmer or timerEnsure the cylinder thermostat (usually strapped to the water tank) is turned up to at least 60°CLocate the motorised valve near your tank and check if the manual lever is stuck

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