The top chilling pipes in the freezer close to the door seem to be defrosting the other levels of pipes are ok.
I have found myself getting headaches the last couple of days and thought maybe its from the freezer gas leaking because i get the headaches a while after ive been at the freezer for 2-3 minutes.
not heard of getting headaches from freezer but learn all sort of things in this game anyway would check thermostat is running fine 1st then see if has gas leak anywhere