Testing the old blend door actuator, I noticed it didn't work so I replaced it hoping this would solve my no heat issue. It didn't. I still have no heat in 2005 Ford F-250 Super Duty. I've checked fuses 5 and 24 after reading some other posts, those are all good. All hoses are hot to the touch. Any suggestions would be much appreciated.

 

Please be more specific - it only blows cold air no matter what settings you use? Or something else? Blows no air at all?

 

When trying to use heater, no matter what setting, it blows lukewarm air. When using the AC in the summer, its cool but not cold air.

 

Working on brother-in-laws 2009 F150, only hot air on passenger side-no cooling even when control turn to max cool (60). Clicking noise heard when starting truck. Ordered new blend door actuator for passenger side, replaced, pulled fuse, waited, reinstalled fuse, turn key on (not starting truck) for 30 seconds. Seemed to go through calibration and started truck-now have cooling. Next day he tells me he still had clicking sound when starting truck, but still had cooling. Two weeks later, now he says it is back to all heat-no cool on passenger side. Now wondering if there is a control board/wiring issue. Opened old actuator, looked good inside-no broken gears, but did not test motor. This is a dual heat auto control system. Thoughts-ideas??