Low
Switched Live on Potterton Ultra 2 50 DV

This indicator light confirms that your boiler is receiving an electrical signal from your thermostat or timer to turn on and heat your home.

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.

What the manual says

Manufacturer manual

Indicator lamp 'On' - aids electrical commissioning

From this model's manual
Verified against the Potterton Ultra 2 50 Dv installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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