Re: Actron pressure problems
Hi Kesa.
So the pressure temps are +8 an 58c. So HP is high.
Are the condenser fans running in the correct direction?
In no particular order.
Overcharged, Air in system, choked liquid strainer ( temp diff across), Lack of condenser air flow (Which way is it flowing), Moisture in the system, Faulty Exp. Valve (closed),
If you have high discharge s/heat then suspect Air in System.
Check the subcooling temp.
If that is excessive (6-say 10c is normal) TEv, overcharged, air in system, choked liquid strainer,( exp. Valve closed -assumed irrelevant in your case?)
If you cannot isolate the particular issue then your
Quote:
Or should it be reclaimed and tested for non-condensable or overcharged?
Option may be the best course of action.
What stage do the condenser fans come on at?
It may be relavant.
Also does this unit have a defrost cycle? only some don't bring the evap fans back online until the evap coil temp is low enough.
If the probe controlling this is not sited correctly then the evap load can become excessive which would cause the issues you are seeing.
Good Luck.
Grizzly
Re: Actron pressure problems
Hi kesa.
I just checked and E9 can indeed mean a phase or phase rotation error so my first guess above would seem favourite.
Grizzly
Re: Actron pressure problems
Hi Grizzly,
Thanks very much for your information. Very helpful!
I have checked both condenser fans are running and in the right direction. I checked all capacitors because that can sometimes cause them to run backwards. I checked both low speed and high speed capacitors and they are fine and there's power to high speed terminal. Also the condenser fans come on with the compressor and stay on.
There is good airflow through the condenser and it's clean. I can see daylight through it.
It is a reverse cycle so it would have a defrost cycle but we are running in cooling.
I will arrange to go back to site and check temperature differential across driers and strainers e.t.c
Also the sub-cooling.
I didn't have time as it was bucketing down rain. I held the liquid pipe at the evaporator and it felt like it was shuddering every few seconds like a liquid flood every few seconds. Just really weird
Thanks again!
Re: Actron pressure problems
Sorry I forgot to mention, the phase error is on 'ESP' models.
This unit is an 'M' series so it only refers to HP/LP.
Thanks for the extra info tho!
Re: Actron pressure problems
Hi guys,
Just an update. It ended up being the outdoor PCB faulty.
I was hesitant on getting it as it was $500 alone!