158
YORK INTERNATIONAL
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.
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:
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.
D I S P L A Y
S A F E T Y
S H U T -
D O W N
N O . 1
( 1
T O
4 )
This message indicates the compressor motor current
in as a percentage of Full Load Amps.
This message shows the system differential oil pressure
at the time of the fault.
This message indicates the system oil line temperature
at the time of the fault.
These messages indicate compressor suction gas satu-
ration temperature and superheat at the time of the fault.
This message indicate compressor discharge gas satu-
ration temperature and superheat at the time of the fault.
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.
This message, which is only displayed if the unit is in
R-407c mode, indicates the refrigerant temperature at
the inlet of the cooler.
S Y S
#
M O T O R
C U R R E N T
7 8 %
F L A
S Y S
#
O I L =
6 8 . 2
° C
S T =
9 . 0
D T =
5 0 . 9
° C
S Y S
#
O I L =
4 . 5
B A R G
S P =
6 2
D P =
1 8 . 7
B A R G
S #
S A T
S U C T
=
1 . 5 ° C
S U C T
S H E A T
= - 2 1 . 5 ° C
S #
S A T
D S C H =
5 3 . 9 ° C
D S C H
S H E A T
< - 2 2 . 4 ° C
S Y S
#
S V
S T E P
=
4 0
S Y S
#
C O O L E R
I N L E T
R E F R I G
T E M P
=
- 2 . 1 ° C
S Y S
#
L L S V
I S
O N
E C O N
T X V
S O L
I S
O F F
S Y S
#
F A N
S T A G E
3
C O M P
H E A T E R
I S
O F F
MicroPanel Contents
Summary of Contents for Millennium YCAS 0693
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