Xarios 600

[mattym]

I was called to a Xarios600 thaat was cooling below its setpoint, when i arrived at the unit it was at 2 which is what it was set for so i put it on def and it ran to 2 again so i placed it on engine and again it was no bother now i have been called back to it and it not missed a beat any ideas

[djbe]

What is the customer saying it is cooling to?

[clivemtk]

lock the stat to zero

[djbe]

lock the stat to zero

How will that help?

[clivemtk]

stop the driver changing it

[djbe]

But mattym said when he got to it it was already set at 2. Most drivers that fiddle in the hope that setting to -29 means it will cool quicker never bother resetting to required temp.

[mattym]

i know this will sound silly but the micro couldnt be faulty could it because we have had them in the past where the unit has been switched off and the evap fans have kept running because apparently somtimes they get a back feed through the fans.

[cadwaladr]

if it aint broke dont fix it,if the fan kept running it should not drop in temperature was this fault reported on electric or engine cycle.

[djbe]

Normally when the micro is faulty the fault is there all of the time, not intermittently.

How much below set point does the customer say it goes to?

[mattym]

the customer wsnt on site to ask i got a print off the transcan and it was down to -5 i ran the unit on electric and on engine i did speak to the driver on the phone and the lowest he seen it was at minus 3 but its never cme back in so presume its behavin itself.