175 Low

Sime 175 Fault Code

The Sime 175 fault code means: your boiler's internal digital clock settings are currently corrupted or have been reset, preventing the unit from following your programmed heating schedule.. It appears on 1 Sime model in our database.

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: remmargorp emit latigiD

DIY fix possible

Locate the digital control panel on your boiler.Access the clock or timer settings menu.Re-program the current time and your desired heating schedule.

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Avoid the next call-out bill

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Sime models that show the 175 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Sime 175 fault code information on this page is sourced and cross-checked against the official Sime service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026