I had my Geo installed in the summer of 2013 in our new shop. our shop is 72 by 120 with 18' side walls. winter of 13 and 14 everything went great! now after our recent cold spell my system wont run. it keeps throwing an alarm saying "Lockout! Prs2" and sometimes "Lockout! Prs1" Can anyone point me in the right direction as to what to check or do?