Low
204 on Worcester Bosch Greenstar 4000

Your boiler has temporarily paused heating because the water inside it is already hotter than the temperature you have requested.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Current prim. water temp. higher than set val. - System waiting. The actual boiler water temperature is higher than the target boiler water temperature. The boiler heat demand is switched off.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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