hi everyone,

i live in manchester and have done a lot of installing a/c equipment for the past ten years and some maintenance and service.

i am now getting into the service side and was after some additional training, stuff like fault finding, checking superheat and subcooling, electrics and any extra stuff that would help me.
Anyone know off courses i could attend at night or maybe in the day as long as the boss would ok it,or where i could get some help from.
I am currently doing nightschool for NVQ Level 2 at mancat but its just gathereing evidence to build a portfolio nothing that is going to teach me anything new.

If not is there any good online courses that i could do which are good or even a nice book which is not too complicated or mind boggling!