Emergency
16-17 on Remeha Quinta 85

Your boiler has detected that dangerous exhaust fumes are being pushed back into the appliance instead of flowing out through the flue.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

Down draught thermostat

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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