Johnson & Starley Main Ignition and Control - 1000-0523395

This part must be installed by a certified Gas Safe engineer due to safety regulations concerning gas appliances.

It is designed for Johnson & Starley RENO System, RENO Heat, RENO Combi, and RENO Xtra boilers.

Some fault codes may clear after a power cycle (turning the boiler off and on at the main switch), but persistent faults require diagnosis by a Gas Safe engineer. Consult your boiler's manual for specific reset procedures.

Yes, the exterior can be cleaned with a soft, dry or slightly damp cloth. Avoid harsh chemicals or abrasive materials.

The digital display typically shows the current operating status, system temperature, and fault codes if an issue is detected.

Warranty information typically depends on the installer and manufacturer's policies. Please refer to your installation documentation or contact the supplier for details.

While the control unit displays fault codes that can aid diagnosis, unusual noises might originate from other components like the pump or fan. A Gas Safe engineer will use the control unit's information alongside other checks to diagnose the root cause.

Verify that the unit is receiving power and that all connections are secure. Consult the boiler's manual for specific fault codes displayed on the unit, and contact a Gas Safe engineer for diagnosis and repair.

Check the main power supply to the boiler. If power is confirmed, the unit itself may be faulty, requiring inspection and potential replacement by a Gas Safe engineer.

Ensure the boiler is operating within its expected parameters. If persistent or illogical codes appear, contact a Gas Safe engineer for a full system diagnostic, as this may indicate a fault with the control unit or another component.

Gently check if the knobs are seated correctly. If they remain unresponsive, the internal mechanism may be damaged. A Gas Safe engineer should be consulted for repair or replacement.