What the manual says
Manufacturer manualObserve display. Press [O/1] button.
From this model's manual
Verified against the Ideal Concord Cxdi installation & service manual.
DIY fix possible
Locate the [O/1] button on the boiler control panel.Press the button to toggle the system out of standby mode.Wait a few moments for the boiler to cycle through its startup sequence.
Find a Gas Safe engineer
Search the official register →
Boiler cover options
Avoid the next call-out bill
A cover plan would handle faults like STANDBY: no call-out fees, no surprise bills.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.