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E44 FAULT CODE
Keston

Return Sensor Open Circuit (C55)

Medium Severity Engineer Required

The return temperature sensor circuit is open on the C55 boiler.

Step-by-Step Fix Guide

  1. Step 1

    Check the return sensor cable

  2. Step 2 Engineer only

    Call a Gas Safe engineer

Gas Safe Reminder

Work on gas appliances must be carried out by a Gas Safe registered engineer. The steps above cover safe checks a homeowner can perform - any internal component replacement requires a qualified professional. If in doubt, always call an engineer.

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