YORK INTERNATIONAL
74
RECIP. MICRO PANEL
RELAY OUTPUT BOARD JUMPERING
Some confusion has arisen as to how to jumper J34 and J35 on the Relay Output Board. All present production will
have the jumpers in the “C” position and will continue as such regardless of the options. Incorrect jumpering will
affect fan cycling on YCHA chillers and loading on LCH chillers. If you experience either of these problems, the
cause is probably incorrect Relay Output Board jumpering.
Listed in the table below is a guide to follow for the Relay Output Board jumpering. The key to determining jumper
position will be whether a Digital Input Board is present and whether plugs J1, J2, J3, and J4 on the Digital Input
Board are connected to the external H.P. (High Pressure) cut-out and M.P. (Motor Protector) or whether the plugs
are left open (See Fig. below for J1-J4 location). This information will also be helpful when replacing the Relay
Output Board.
PLUGS J1,J2,J3 AND J4 OF THE
EMPROM IN U15
J34 and J35 CHILLER DIGITAL INPUT BD. DIGITAL INPUT BOARD ARE
OF MICROPROCESSDR
POSITION TYPE INSTALLED? CONNECTED TO THE
BOARD
H.P. CUTOUT AND M. P.
R LCH Yes Yes “V” Series
R LCH Yes Yes Updated to “GE” Series
C LCH Yes No “GE” Series
C LCH No Does Not Apply “GE” Series
C YCHA Yes No “GE” Series
C YCHA No Does Not Apply “GE” Series
EFFECTIVE IMMEDIATELY !
TRANSDUCER WARRANTY REQUIREMENTS
FOR
RECIP. SMART PANEL
YORK has made an agreement with Kavlico for reimbursement of parts cost plus reasonable labor for all Kavlico
transducers which fail within the chiller warranty period. This will mean considerable savings for YORK as long as
certain guidelines are followed. We would appreciate the cooperation of all District and Regional Managers, Super-
visors, and Field Service Technicians to help us satisfy the requirements to collect this warranty.
When a Kaviico transducer fails write the word KAVLICO clearly on the warranty so there is no mistake about the
manufacturer of the transducer. Be sure that there is no other labor or parts charged to the warranty. Note the type
of transducer (oil, suction, or discharge), the pressure range (0 - 200 or 0 - 400), the pressure that was actually in the
system as read on a gauge, and the fault code at the time the panel shutdown. Be sure that the number of labor
hours on the warranty is accurate.
This information is necessary for Kavlico to evaluate the failure and determine reimbursement costs to YORK.
Immediately ship the transducer with a copy of the warranty via UPS to the following address:
YORK INTERNATIONAL CORP.
631 S. Richland Ave., Door 100
York, PA 17403
Attn: Dave Saylor / 36BE
LD01900
J1 J2 J3 J4
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