American Power Conversion DX Benutzerhandbuch

The System Delays protect the Modules in the System from excessive wear and damage and keep the 
modes (cooling, reheat, and dehumidify) from working against each other.

The delay begins when the compressor engages and then prevents the compressor from 

disengaging until the delay has expired. It protects the compressors from rapidly cycling between on and 
off and pushing all of their lubricating oil out into the refrigerant line. 

Caution: Reducing the Comp Min ON delay can shorten the compressor life by causing 
excessive wear and damage.

The

The delay begins when the compressor disengages and then prevents the compressor 

from engaging until the delay has expired. It protects the compressors from rapidly cycling between on 
and off and pushing all of their lubricating oil out into the refrigerant line. 

Caution: Reducing the Comp Min OFFdelay can shorten the compressor life by causing 
excessive wear and damage.

The condenser fluid valve close delay begins when the compressors disengage, and then 

keeps coolant flowing through the heat exchanger until the delay expires. Once the delay expires, the 
condenser fluid valve closes.

The interstage delay begins when the first compressor (stage 1) in a Module engages. It 

prevents a second compressor (stage 2) in a System from engaging until the delay has expired.

The start-up delay begins when the System is started and initialized. The System cannot 

begin operation until this delay has expired. Use the start-up delay to restart equipment sequentially in 
your room after a power loss.

The start-up delay begins when the blowers start. It allows the sensors to obtain an accurate 

reading of the room conditions and it allows the System to check for major alarms before engaging 
environmental control functions.

Set the communication loss shutdown delay. The delay 

begins when an Expansion Module loses communication with the Main Module of a System. If 
communication is not restored before the delay expires, the Expansion Module will shut down. Set the 
delay for up to twenty-four hours, or set the Expansion Modules to continue operating if communication 
with the Main Module is lost by selecting Disabled.