literally as i put the HEVAC panel back in from its LED conversion the book symbol came on. All the servos work, I can hear them and checked them with my Lynx device. Soon realised neither blower motor is running. Wired 12 volts across their heavy black and red cables and they both turn. Checked relays 6 & 7 both OK. Fuses 43 and 34 both OK. I have two HEVACs both tested and checked. Same error message comes up with either.
Then on the Lynx I saw this;
followed by this.
So I'm assuming the blower controllers have gone, but both at once? Could there be a unifying explanation?