Low
Outside Sensor Fault on Ideal Logic Max System 2

Your boiler has lost communication with the sensor that monitors the temperature outside, which may cause your heating to be less efficient or run at the wrong temperature.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Outside temperature sensor fault

From this model's manual
Verified against the Ideal/Ideal Logic Max System 2 installation & service manual, page 72.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

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All 20 fault codes on the Logic Max System 2

Seeing a different code? Every code this model can display, in one place.

Blocked Flue/CondensateFan FaultFlame LossFlame On Before Gas OnFlow Thermistor FaultGas Valve FaultIgnition LockoutLow Mains VoltageLow Water PressureNo Water FlowOverheat LockoutPCB FaultPump Dry RunPump FaultPump Rotor BlockedReturn Thermistor FaultRoom Thermostat FaultSpare PCB Not SetToo Many Restarts

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