Frequent High Discharge Pressure alarms and shutdowns ACS100

[Anonymous user]

We have an InRow SC ACS100 that has been installed for about a year. It's purely a backup to a primary installed AC unit in a fairly small server room. The InRow unit, when we are utilizing during primary AC failure frequently shuts down due to High Discharge Pressure. When it does run it will typically hover around 530 psi. I am in a situation now where only a few minutes after turning the unit the pressure builds until it shuts itself off for a while and then tries again. Sometimes I can put the unit in standby for an hour and it will run again for 8+ hours without a problem.
It is vented into a pretty large plenum that covers a large area.
Can you provide some information on how I might reduce the discharge pressure or what I should be targeting in terms of settings? Thanks.

[luizyto_apc · Accepted solution]

Hi, I have the same problem with my equipment. Could you resolve it? 

This is my pressure, do you know how can I reduce it?

Unit Detailed Status
Input State:	Open
Output State:	Open
OHE Input State:	Closed
OHE Output State:	Closed
Filter Differential Pressure:	2 Pa
Suction Pressure:	1109 KPa
Discharge Pressure:	3434 KPa
Superheat Temperature:	4.3 °C

Operating Mode:	On
Compressor State:	On
Cool Output:	2.0 kW
Cool Demand:	2.0 kW
Rack Inlet Temperature:	21.6 °C
Supply Air Temperature:	19.0 °C
Return Air Temperature:	27.1 °C
Suction Temperature:	18.2 °C
Air Flow:	321 L/s
Fan Speed:	30.9 %
Hot Gas Bypass Valve Position:	57.52 %