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YORK INTERNATIONAL
31
FORM 150.40-NM25
SINGLE CIRCUIT UNITS
MICRO LOGIC BOARD DIP SWITCH CONFIGURATION
(REV. C BOARDS) STANDARD ENGLISH ONLY (GEII.4
REV. 2 EPROM)** OR GEII.4 BR REV. 1 EPROM
A Dip Switch (U39) with 7 miniature rocker switches is
located on the Micro Logic Board (Fig. 25). These switches
must be configured properly before starting the chiller.
See the list on the right and set up the switches as re-
quired.
FIG. 25 – MICRO LOGIC BOARD (STANDARD ENGLISH UNITS)
1 = Spare
2 = OFF: Low Ambient Cut-out = 35°F
ON: Low Ambient Cut-out adjustable
0°-50°F (R1 Combo Board)
3 = OFF: RWT Control (Standard as Shipped)
ON: LWT Control
4 = OFF: No EMS Control (No Digital Input
Board, Standard As Shipped)
ON: EMS Control (Optional Digital Input
Board Installed)
5 = Spare
6 = Spare
7 = Spare
LD01625
* Refer to above sketch to identify “OFF” and “ON” positions.
The “dot” can be misleading when identifying switch position.
See the “Side View” drawings for recommended position veri-
fication.
** The GEII.5, REV. 2 may also be labled GEII.5S, REV.2. The two
EPROMs are identical.
U39
YCHA G.E. II. 4, REV
. 2
EPROM
00009TG(R)