hitachi g5 twin slpit

[tait71]

hi people it has been some time but here goes, i have been working on an 6 year old hitachi g5 twin system 2 evaps and 1 outdoor, the problem is that the slave wont run but the marster and outdoor both run ok, it has had a new indoor pcb set up to slave settings the controller knows there are 2 indoor units but i still get an 03 fault comms error, checked all fuses the interlinking cable looks ok (not checked with meter yet!) any idears out there:confused:

[The Viking]

On the same subject....

Has anyone got a manual for these, or at least a list of all the fault codes (and their meanings).

One of my engineers had problems with one of these yesterday and we both phoned Hitachi's Tech support (I even emailed them) and they haven't bothered to get back to us yet (by phone or email)...Not much of support there, luckily the fault was found and repaired without their help!