Posts by WvdH

    Step 1: Turn on switch 1 and wait 10 minutes.

    Step 2: Turn off switch 1 and turn on switch 2.

    Step 3: Open the door. If the light is turned on switch 2 was te correct switch, otherwise take step 4.

    Step 4: Touch the bulb! If the bulb is cold, switch 3 is the correct one, otherwise (bulb is hot) switch 1 is the correct one.

    WvdH - COM01 - STeam boiler