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    bmorris35's Avatar
    bmorris35 Posts: 1, Reputation: 1
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    #1

    Jan 18, 2009, 12:36 PM
    Water heater pressure switch.
    I have a Rheem powervent 84 gallon tank. The control valve on the unit has an LED indicator light that is flashing 4 times. The code says that if it is flashing 4 times then the pressure switch is open. What does this mean, and how do I fix this. I have no hot water.
    rwinterton's Avatar
    rwinterton Posts: 289, Reputation: 15
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    #2

    Jan 19, 2009, 07:45 AM

    A switch can be open or closed. If closed, current flows through the switch to whatever it's supposed to go to. In your case, the pressure switch is open -- probably failed open. That means that you need to replace it with a new pressure switch.
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