York YCAV0569, Installation Operation & Maintenance

Page: 239 / 278

239
JOHNSON CONTROLS
FORM 201.21-NM2 (616)
8
ENABLING OPTIMIZED HIGH IPLV MODE
When changing a Chiller Control Board, a Chiller Con-
trol Board EPROM, or if a situation occurs where a chill-
er is not programmed from the factory, the chiller will
not be capable of operating High IPLV mode. The serial
number of the unit will first need to be programmed into
the panel, if the Invalid Serial Number display appears
(See Page 235). The Invalid Serial Number message
will override the Optimized Efficiency Disabled mes-
sage. If the chiller was purchased with the High IPLV
Option and does not have the High IPLV mode enabled,
it will not prevent the chiller from operating, but the
chiller will only operate in the Standard IPLV mode.
Additional STATUS messages can be viewed by press-
ing the STATUS key repetitively to enable the technician
to view any other messages that may be preventing the
chiller from operating.
Changing the programming of this
feature requires the date and time to
be set on the chiller prior to program-
ming the password. The password is
also time sensitive and must be used
“immediately” when it is received.
The STATUS display will inform the operator when
a HIGH IPLV chiller is operating with the High IPLV
mode disabled by displaying the following STATUS
message:
If the message above appears, immediately contact
YORK Product Technical Support or YORK ES Com-
mercial for a password to enable the High IPLV mode.
You will need to provide YORK Product Technical
Support or YORK ES Commercial with the Unit Serial
Number located on the chiller nameplate. The date and
time will also need to be current on the chiller, and will
need to be provided to YORK Product Technical Sup-
port or YORK ES Commercial. It is essential YORK
Product Technical Support or, YORK ES Commercial is
aware of the “local” time to allow adjustments for time
differences from Eastern Standard Time.
After obtaining the password, the fol-
lowing steps will need to be carried out
“immediately” to input the serial num-
ber. If the password is not immediately
UNIT WARING: OPTIMZED EFFICIENCY
DISABLED - CONTACT YORK REPRESENATIVE
input, the panel will not accept it.
To enable HIGH IPLV Mode, first press the SERVICE
Key. The following message will appear:
Key in the 5 digit alphanumeric password provided by
YORK Technical Support or YORK ES Commercial
and press the

(ENTER) key. The following display
will appear:
IPLV OPTIMZED EFFICIENCY CONTROL
◄ ► XXXXXXXXXXXXXXXXXXXXXXXXX
When the Optimized (High IPLV) is enabled, the display
will indicate, “ENABLED”. When not enabled, the
display will indicate, “DISABLED”. Use the ◄ and
► (ARROW) keys to enable/disable and press the

(ENTER) key to store the selection.
SERVICE MODE XXXXX
PRESS ENTER KEY TO CONTINUE