History Key; Fault History Data - Local Display Messages - York YCAS Series Installation Operation & Maintenance

Micro Panel Contents
SUCTION SUPERHEAT
SAT DISCHARGE TEMP
DISCHARGE SUPERHEAT
SLIDE VALVE STEP
EEV OUTPUT
EVAPORATOR INLET REFRIG
LIQUID LINE SOLENOID
ECONOMIZER TXV SOLENOID
CONDENSER FAN STAGE
COMPRESSOR HEATER
WYE-DELTA RELAY
SYSTEM 2 DATA
COMPRESSORS STATUS
RUN TIME
MOTOR CURRENT
SUCTION PRESSURE
DISCHARGE PRESSURE
OIL PRESSURE
SUCTION TEMPERATURE
DISCHARGE TEMPERATURE
OIL TEMPERATURE
SAT SUCTION TEMP
SUCTION SUPERHEAT
SAT DISCHARGE TEMP
DISCHARGE SUPERHEAT
SLIDE VALVE STEP
EEV OUTPUT
EVAPORATOR INLET REFRIG
LIQUID LINE SOLENOID
ECONOMIZER TXV SOLENOID
CONDENSER FAN STAGE
COMPRESSOR HEATER
WYE-DELTA RELAY
DAILY SCHEDULE
S M T W T F S
MON START=00:00AM
TUE START=00:00AM
WED START=00:00AM
THU START=00:00AM
FRI START=00:00AM
SAT START=00:00AM
HOL START=00:00AM
The System Evaporator Inlet Refrig-
erant Tem per a ture will be printed if
the unit is in R407C mode.
164
3.4 DEGF
74.5 DEGF
6.3 DEGF
0
0.0 %
44.6 DEGF
OFF
OFF
OFF
ON
OFF
ON
0- 0-15-26 D-H-M-S
104 AMPS 87 %FLA
57 PSIG
233 PSIG
218 PSIG
42.9 DEGF
145.5 DEGF
102.8 DEGF
31.7 DEGF
11.2 DEGF
112.1 DEGF
33.4 DEGF
70
35.6 %
23.6 DEGF
ON
ON
3
OFF
ON
*=HOLIDAY
STOP=00:00AM
STOP=00:00AM
STOP=00:00AM
STOP=00:00AM
STOP=00:00AM
STOP=00:00AM
STOP=00:00AM
4.5

HISTORY KEY

If a safety shutdown occurs on the chiller, a com pre -
hen sive list of operating and programmed settings data
is stored by the microprocessor. The information is
stored at the instant of the fault, regardless of whether
the fault caused a lockout to occur. This information is
not af fect ed by power failures or manual resetting of a
fault lockout.
The microprocessor stores data for up to 6 safety shut-
downs on 2 System units and 4 safety shutdowns on
3 or 4 compressor units. Once this limit is reached, a
fur ther shutdown will cause the oldest set of data to be
discarded in favor of storing the new shutdown data. The
Safety Shutdowns are numbered from 1 to 6 or 1 to 4
with num ber 1 always being the most recent.
If a remote printer is not connected, pressing the His-
to ry key allows the operator to locally scroll through
in for ma tion relating to the stored safety shutdowns on
the con trol panel display.
If a remote printer is connected, pressing the History key
will cause data from the last 6 shutdowns on a 2 com-
pressor chiller or 4 shutdowns on a 3 or 4 com pres sor
chiller to be transmitted from the mi cro pro ces sor to the
remote printer. The printout will begin with the most
recent fault which occurred. This does not affect the
stored data and as many prints as desired may be tak en.
See Section 4.7 for a HISTORY printout sample.
4.6 FAULT HISTORY DATA –
LOCAL DISPLAY MESSAGES
When the History key is pressed, the following mes sage
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. After the ENTER Key is pressed, a mes sage in-
dicating the time and date of the Fault Shut down will
appear:
S H U T D O W N
5 : 5 9 A M 2 9
FORM 201.19-NM8 (804)
S H U T -
( 1 T O 4 )
O C C U R R E D
N O V 0 2
YORK INTERNATIONAL