York CodePak YK L1 L1 G4 User Manual

YORK INTERNATIONAL 19
FORM 160.49-O1
Control Center in SERVICE mode and press WARN-
ING RESET key. To reset any safety shutdown mes-
sage, press WARNING RESET key in SERVICE mode
with the COMPRESSOR switch in the STOP/RESET
position.
MANUAL OIL PUMP – This key is operational in any
mode. Press and release this key to run the oil pump.
Press and release the key again to stop the oil pump.
A 10-minute maximum is imposed on the running of
the oil pump (i.e., the oil pump will automatically shut
off after 10 minutes). If a longer running time is de-
sired, the key must be pressed again. The manual oil
pump feature is disabled during “START SEQUENCE
INITIATED” to allow for auto-zeroing of oil pressure
transducers.
DISPLAY DATA – This key is operational in any three
of the Control Center modes of operation (SERVICE,
LOCAL or REMOTE). It is used to display certain sys-
tem operating parameters that are relevant to trouble-
shooting the chiller system.
Press and the DISPLAY DATA key. The following mes-
sages will sequentially scroll on the display. Each mes-
sage will be displayed for 2 seconds.
No. 1
SAT TEMPS EVAP = XX.X°F, COND = XX.X°F
No. 2
DISCHARGE TEMP = XXX.X°F, OIL TEMP = XXX.X°F
No. 3
HOP = XX.X PSIG; LOP = XX.X PSIG
To hold each of the above messages, press and re-
lease the DISPLAY DATA key, then press and release
the DISPLAY HOLD key. Message No. 1 above will be
displayed and updated every 2 seconds until the DIS-
PLAY DATA key is pressed and released. Message
No. 2 is then displayed and updated every 2 seconds
until the DISPLAY DATA key is again pressed and re-
leased. Message No. 3 is then displayed and updated
every 2 seconds until either the DISPLAY DATA key is
again pressed and released (whereupon message No.
1 is displayed), or the DISPLAY HOLD key is pressed
and released (whereupon the DISPLAY DATA mes-
sages are removed from the display.)
HISTORY PRINT – This key is used to initiate a his-
tory print to the optional printer. Refer to Form 160.49-
N2 for operation of this key.
OPERATING MODES
The MicroComputer Control Center can be operated in
four different operating modes as follows:
SERVICE – enables all the Service keys except DIS-
PLAY DATA, MANUAL OIL PUMP, and HISTORY
PRINT, which are enabled in all modes. See “Service
Keys”, page 18.
LOCAL – This is the normal operating mode. The com-
pressor can be started and stopped from the Control
Center. Also, the Display and Setpoint parameters can
be displayed.
PROGRAM – Allows the operator to program the Set-
point parameters, and change operating modes.
REMOTE – In this mode, the Control Center will ac-
cept control signals from a remote device (i.e., Energy
Management System) or cycling input. The control sig-
nal inputs are:
1. Remote Start
2. Remote Stop
3. Remote LCWT Setpoint
4. Remove Current Limit Setpoint
NOTE: The compressor can be stopped by the COM-
PRESSOR switch, regardless of the operating
mode. The switch must be in RUN position to
enable REMOTE mode. The operator cannot
locally start the compressor using the COM-
PRESSOR switch when in the REMOTE mode.
To determine which operating mode the Control Center
is presently in, simply press the MODE key.
• If the Control Center is in LOCAL mode,
LOCAL OPERATING MODE IN EFFECT is displayed.
• If the Control Center is in REMOTE mode,
REMOTE OPERATING MODE IN EFFECT is displayed.

York CodePak YK L1 L1 G4 Specifications

General

Brand	York
Model	CodePak YK L1 L1 G4
Category	Chiller
Language	English