High
T1/T2 on Ideal Falcon Gte

Your boiler's internal thermostat or control wiring has lost connection, preventing the heating from firing up.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Dry contact of the stage 1 boiler thermostat / Insert in the control circuit of boiler stage 1

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.

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