furnace problem

[letony]

I have a 8 year old furnace. It is Amana 80 SV
After My furnace is flood with water , the central air still works fine , but when I turn on the heat , it is not working , no flame ....

The led trouble code is 3 blinks = "Pressure switch stuck "

is Pressure switch is bad ? do I need to replace it ? I take out the end of the hose and blow it , I hear click from pressure switch , the hose is not clogged .
Please advice me . Thanks.

 

[Jimm Two]

check this thread in may help; follow the peoples tips they worked for me
Trane XE 90 pressure switch. good luck