York Millennium YCAS Series Installation Operation & Maintenance page 158

MicroPanel Contents
S Y S # M O T O R
This message indicates the compressor motor current
in as a percentage of Full Load Amps.
S Y S # O I L =
S T = 9 . 0 D T =
This message shows the system differential oil pressure
at the time of the fault.
S Y S # O I L =
S P = 6 2 D P =
This message indicates the system oil line temperature
at the time of the fault.
S # S A T S U C T
S U C T S H E A T
These messages indicate compressor suction gas satu-
ration temperature and superheat at the time of the fault.
S # S A T D S C H =
D S C H S H E A T
This message indicate compressor discharge gas satu-
ration temperature and superheat at the time of the fault.
S Y S # S V S T E P
This message indicates the compressor slide valve po-
sition at the time of the fault. 0 steps equals minimum
capacity and 75 steps equals fully loaded.
S Y S # C O O L E R
R E F R I G T E M P
This message, which is only displayed if the unit is in
R-407c mode, indicates the refrigerant temperature at
the inlet of the cooler.
158
C U R R E N T
7 8 % F L A
6 8 . 2 ° C
5 0 . 9 ° C
4 . 5 B A R G
1 8 . 7 B A R G
= 1 . 5 ° C
= - 2 1 . 5 ° C
5 3 . 9 ° C
< - 2 2 . 4 ° C
= 4 0
I N L E T
= - 2 . 1 ° C
S Y S # L L S V
E C O N T X V S O L
This message indicates the Liquid Line Solenoid Valve
and the economizer Thermal Expansion Valve Solenoid
Valve position: ON = Energized / OFF = De-Energized
(OFF) at the time of the fault.
S Y S # F A N
C O M P H E A T E R
This message indicates the stage of condenser fan op-
eration on the system and the status of the compressor
heater at the time of the fault. See Section 8.4 for de-
tails of fan staging.
YCAS 3 & 4 SYSTEM MODELS:
When the History key is pressed, the following
message will appear:
D I S P L A Y S A F E T Y
D O W N N O . 1
To select a Safety Shutdown, press the appropriate key
on the numeric key pad then press Enter. Remember
that the most recent fault information is stored as shut-
down No. 1.
Repetitively pressing the !# key now scrolls through
the information available in the Safety Shutdown buffer.
The Safety Shutdown displays for the YCAS 3 & 4
System models have the same structure and sequence
as the YCAS 2 System model messages as given in the
preceding paragraphs. The only difference is that after
the System 2 data is completed, pressing the ! key
displays System 3 data before looping back to the start
of the Safety Shutdown display.
I S O N
I S O F F
S T A G E 3
I S O F F
S H U T -
( 1 T O 4 )
YORK INTERNATIONAL