View Full Version : Daikin 3mxs52lvma shutting down, ambient temp warm to hot

02-02-2017, 12:10 PM
Hi fellas,
Wondering if there is any daikin experts amongst you?

I'm looking at a multihead split, customer reports it shuts down about once a day when the ambient is up over around 27 degrees Celsius.

I haven't really had the time to sit about and watch it happen yet, the customer is t the easiest to understand either.
They reckon they need to flick off the breaker and back on again and it comes good for another good few hours / a day.

This thing has 2 heads, a 2kw and 5kw.

The next issue is, the max length for the line set is 25m a room, or 50m total.
The original installers ballsed it in my opinion, the length per room is up around 33 meters.

They didn't add refrigerant for length either. I reclaimed it and weighed it, smack bang on factory charge - 2kg.
I calculated the extra juice for 50m and weighed that in as a first step.
It's still no good, what would the fine people on this forum recommended?

It shows a UH fault too, can't really make heads or tails of that one...

Thanks in advance - I appreciate any input