Low
4 (Flashing) on Ferroli Tempra

Your boiler is currently in standby mode for the central heating and is not actually reporting a fault.

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

Central heating standby

From this model's manual
Verified against the Ferroli Boiler Tempra 30 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.

DIY fix possible

Check that your room thermostat is turned up high enough to call for heat.Ensure your programmer or timer is set to an 'On' period.Verify that the boiler mode is set to 'Winter' (Heating and Hot Water) rather than 'Summer' only.

Find a Gas Safe engineer
Search the official register →

Avoid the next call-out bill

A cover plan would handle faults like 4 (Flashing): no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related guides you might find useful