electronic controller inside

[christhefridge]

worked on a split unit today, elliwell controller internal with nothing running out the switch compressor on and off, evaporater comes down to 1 deg then rises to 4 deg then back down to 1deg, compressor never cut out the hole time i was there, as i saiid theres nothing linking the compresor electric with the internal stat, there are presure switches inalong side compressor are these knocking compressor on/off, i was there fitting a new contacter which had burnt up my concerns being it has never switched off can any one advise please?

[Brian_UK]

A little more description of the unit may help.

What sort of split is it?

[Kp3]

if its a pump down system which it sounds like. I would suggest you look at the pressure switch sounds like its not knocking off hence contactor burnt out

[goshen]

HI it sounds like a pump down unit with low pressure control that cuts the compressor out.
the thermostat controles the liquid solonoied.
if your contactor burned out check contacts make sure no loose ones
and verify amperage fits the load

[Eeram]

Sounds like the solenoid valve is closing by the controller, but the LP control is not properly set. Maybe compressor is running in a vacuum when in pumpdown.

What is the suction pressure when the controller shows 1 deg. C?