stat instructions replacement replace temperature fitted faulty knob replaced heating installed tank previous electrician install boiler cable

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  • Honeywell ST9400C 7 day programmer + T6360B Room Thermostat + L641A Thermostat

    Honeywell L641A1039 Cylinder Thermostat

    SKU: HW-13-8a
    EXCL. TAX £9.15 INCL. TAX £10.98     Out of Stock