Daikin RY71FJ7V1 Fault

[tonyh]

I was called out to an R22 Daikin unit with E3 high pressure fault compressor keeps tripping within a couple of seconds.
The unit was reinstalled by a company a couple of weeks ago they have told the customer its nothing to do with there installation work. when i put the gauges on there is no sign of any refrigerant on either the gas or liquid valves, i rang daikin and they were as baffled as me and said it must have a mager leak which that may be the case i will be going back with a bottle of OFN, but if this is the case why is it showing high pressure fault.

Also have a look at what I found when I went to the outdoor units 12" between the fans facing each other and insulation missing on some pipe work apparently all of these units have just been reinstalled.