(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 2 of 2

Thread: wheems Powervent 2 pressure switch problem

  1. #1
    DIY Junior Member woodbury's Avatar
    Join Date
    Jan 2011
    Location
    Irvine, ca
    Posts
    1

    Unhappy 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 by woodbury; 01-01-2011 at 11:03 AM.

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,374

    Default

    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.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

Similar Threads

  1. Pressure Switch Problem ( I think )
    By frankap in forum Pumps and Tanks Well Forum & Blog
    Replies: 5
    Last Post: 05-01-2010, 04:28 PM
  2. Pressure switch problem or something else???
    By SergioMastro in forum Pumps and Tanks Well Forum & Blog
    Replies: 34
    Last Post: 08-05-2009, 07:48 AM
  3. Pressure Switch Problem
    By boryst05 in forum Pumps and Tanks Well Forum & Blog
    Replies: 1
    Last Post: 07-16-2007, 10:46 AM
  4. Pressure switch problem??
    By Marster in forum Pumps and Tanks Well Forum & Blog
    Replies: 2
    Last Post: 05-18-2006, 02:30 PM
  5. Pressure switch problem
    By 2cycle in forum Pumps and Tanks Well Forum & Blog
    Replies: 2
    Last Post: 04-26-2006, 08:43 AM

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •