"Pressure Switch is Closed with Inducer Off" - DoItYourself.com
https://www.doityourself.com/forum/gas-oil-home-heating-furnaces/443384-pressure-switch-closed-inducer-off.html
Feb 03, 2011 · What happens is the inducer comes on, the igniter lights, the gas valve stays closed, the igniter shuts off, then the LED starts blinking 3 times, the inducer shuts down for a few seconds. Then the process starts all over again. Based on what I'm reading in the manual, if it's the pressure switch the igniter should never become engaged.
DA: 59 PA: 98 MOZ Rank: 18