Unit Keys - York YLAA0041 Installation Operation & Maintenance

Air-cooled scroll chillers with brazed plate heat exchanger style b (60 hz) 4 to 12 fan 40 ton to 230 ton 140 kw to 800 kw
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Section 7: Unit controls
Options key
There are many user programmable options under the
OPTIONS key. The OPTIONS key is used to scroll
through the list of options by repeatedly pressing the
OPTIONS key. After the selected option has been dis-
played, the ↑ (UP) and ↓ (DOWN) arrow keys are then
used to change that particular option. After the option
is changed, the ENTER/ADV key must be pressed to
enter the data into memory.
Many of the OPTIONS displayed are
only programmable under the SERVICE
MODE and not under the OPTIONS key.
Options only programmable under the
SERVICE MODE are noted in the details
describing the option.
Figure 46 on page 169 shows the programmable op-
tions. Following are the displays in the order they ap-
pear:
Option 1: Language
D I S P L A Y
E N G L I S H
English, Spanish, French, German, Italian, Portuguese,
Hungarian, Polish, and Swedish can be programmed.
162

Unit keys

OPTIONS
OPTIONS
L A N G U A G E
CLOCK
CLOCK
00070VIP
Option 2 : System switches (two system units
only)
(Single System Display is similar)
S Y S
1
S Y S
2
This allows both systems to run.
S Y S
1
S Y S
2
This turns system 2 OFF.
S Y S
1
S Y S
2
This turns system 1 OFF.
S Y S
1
S Y S
2
This turns systems 1 and 2 OFF.
Turning a system OFF with its system
switch allows a pumpdown to be per-
formed before shutdown.
Form 150.72-ICOM6
Issue date: 12/19/2023
S W I T C H
O N
S W I T C H
O N
or
S W I T C H
O N
S W I T C H
O F F
S W I T C H
O F F
S W I T C H
O N
or
S W I T C H
O F F
S W I T C H
O F F
Johnson Controls

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