What the manual says
Manufacturer manualLow pressure in heating circuit
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Avoid the next call-out bill
A cover plan would handle faults like A.02.06: no call-out fees, no surprise bills.
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Related fault codes
All 57 fault codes on the 600 Combi 2
Seeing a different code? Every code this model can display, in one place.
Related guides you might find useful
Boiler keeps losing pressure
Six most common causes of dropping pressure.
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On a combi it is usually the diverter valve. On a system boiler, the motorised valve.
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Turn it off first. Where the water comes from tells you which part has gone.
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