Found chewed low volt wire . After fixing this I was still getting a lockout for high pressure . After omhing the hp switch I found it to be oL indicating bad pressure switch. I jumped the pressure switch to make sure the system was running properly and didnt really have a high head pressure . After verifying all this I called trane to place a warranty part order and they currently do not have a date for me due to it being on backorder . I got consent from the homeowner to bypass the hp switch until the part comes in . The po for the warranty part is 36642536