86 YORK INTERNATIONAL
SINGLE CIRCUIT UNITS
2. Louver panels are added to one side only of the con-
denser circuit.
3. Wiring harnesses are added as necessary. See pages
10-13.
4. SW2 on the Micro Logic Board is in the ON position.
R1 on the Combo Board must be adjusted to the de-
sired low ambient cut-out. This should be done while
Viewing Display Code 0, 7.
5. A capacitor and varistor are added to the terminal
block located in the compressor mounted junction box.
FAN AND LOW AMBIENT SOLENOID CYCLING
The chart shown in Fig. 61 explains how fan cycling is
controlled and in what sequence. The chart also indi-
cates when the low ambient liquid line solenoid valve
(LSA) functions.
FIG. 61 – FAN CYCLING
AMBIENT TEMP. SYSTEM 1 FANS LOW AMBIENT SOLENOID
Above 65°F (18.3°C) Fan C & D ON: 4 sec. after compressor start De-energized (Open)
Fans A & B and ON: 30 sec. after
compressor start
45°F (7.2°C) – Fans C & D ON: 4 sec. after compressor start De-energized (Open)
65°F (18.3°C) Fans A & B ON: Condenser Press > 300
PSI (2067 kPa)
OFF: Condenser Press < 230 PSI
(1589 kPa)
0°- 45°F Fan C ON: Condenser Press > 260 PSI Energized (Closed): No
(1791 kPa) Fans ON
OFF: Condenser Press < 190 PSI or
(1309 kPa) Fan C or E ON
Fan D ON: Condenser Press > 280 PSI De-energized (Open):
(1929 kPa) Fans F or G & H ON
Condenser Press < 210 PSI or
(1447 kPa) Fans D or A & B ON
Fans A & B ON: Condenser > 300 PSI
(1585 kPa)
OFF: Condenser < 230 PSI
LD01634
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