wheems Powervent 2 pressure switch problem

Discussion in 'Water Heater Forum, Tanks' started by woodbury, Jan 1, 2011.

  1. woodbury

    woodbury New Member

    Jan 1, 2011
    Irvine, ca
    Rheems Powervent 2 pressure switch problem

    LED blinks 4 times and it says it means "pressure switch open".
    I have to unplug and plug in it back to make it work.
    It works for a while and it blinks 4 times again for same problem.
    I think pressure stitch prevent water heater from automatically power-on.
    What should I do? Oh.. typo. Rheems, not wheems.
    Last edited: Jan 1, 2011
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    If this is a power vented unit, it is likely there is either a blockage in the intake or exhaust line, or a broken piece. When the burner comes on, the exhaust fan comes on to move the exhaust. There is a pressure switch safety circuit that detects the fan is on. If that switch doesn't close, it will shut the system down. It could be a bad switch, bad fan, or an obstruction or broken pipe somewhere, preventing the pressure to build up as a result of the fan motor running. It could even be the fan blades may have broken, and can't move enough air to close the switch. Checking the switch should be easy if you have and understand how to use a multimeter.
  3. Sponsor

    Sponsor Paid Advertisement

Similar Threads: wheems Powervent
Forum Title Date
Water Heater Forum, Tanks GE Powervent GG50S06RVK Water Heater help? Sep 14, 2015
Water Heater Forum, Tanks Rheem PowerVent Issues - Help! Jan 1, 2014
Water Heater Forum, Tanks Rheem PowerVent w/ Robertshaw 'ECO Failure' Dec 2, 2012
Water Heater Forum, Tanks Ruud PowerVent 2 not wanting to run long enough to heat water up to temp Dec 27, 2011
Water Heater Forum, Tanks AO Smith FPS 50 Powervent Water Heater: Burner won't stay lit, blower keeps running Nov 26, 2011

Share This Page