BoilerFaultCodesWhat the manual says
Manufacturer manualFlow NTC fault
What causes this fault?
This fault occurs when the internal sensor responsible for monitoring the heat of the water leaving the boiler fails to send a reliable signal to the main control board. The most common reason is that the sensor has physically degraded or developed an electrical short, meaning the boiler shuts down as a safety precaution because it no longer knows if the water is at a safe temperature.
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 F00: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Related fault codes
All 52 fault codes on the Flexicom hx
Seeing a different code? Every code this model can display, in one place.