Leo A Vista , CA October 26, 2015 Appliance: Model PXRQ15RBL My reserve tank was not filling up I removed the shut-off valve cover and delivered air threw the openings and notice that one was clogged, must have gotten clogged with calcium build up. Anyway ordered the Sh-Off Cover & Chk Ba, it took about 1-2 minutes to replace and problem was fixed. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes