998659-YIM-C-0614
48
Johnson Controls Unitary Products
Figure 30: Unit Control Board
Unit Control Board Option Setup
Option Byte Setup
• Enter the Option Setup mode by pushing the OPTION
SETUP / STORE button, and holding it for at least 2
seconds.
• The green status LED (Option Byte) will be turned on and
the red status LED (Heat Delay) is turned off.
• The 8, 4, 2 and 1 LEDs will then show the status of the 4
labeled options (
(8) Fan Off at Heat Start
,
(4) Low
Ambient Lockout
,
(2) Free Cooling Lockout
, and
(1)
Lead / Lag)
.
• Press the UP or Down button to change the LED status to
correspond to the desired Option Setup.
• To save the current displayed value, push the OPTION
SETUP / STORE button and hold it for at least 2 seconds.
When the value is saved, the green LED will flash a few
times and then normal display will resume.
NOTE:
While in either Setup mode, if no buttons are pushed for
60 seconds, the display will revert to its normal display,
exiting the Option Setup mode.
When saving, the
control board only saves the parameters for the
currently displayed mode (Option Byte or Heat
Delay).
Heat Delay Setup
• Enter the Option Setup mode by pushing the OPTION
SETUP / STORE button, and holding it for at least 2
seconds.
• The green status LED (Option Byte) will be turned on and
the red status LED (Heat Delay) is turned off.
• Press the COMM SETUP / SELECT button to toggle into
the Heat Delay Setup, the green LED will turn off and the
red LED for Heat Delay will turn on.
• The 8, 4, 2 and 1 LEDs will then show the status of the
Heat Delay, (See Table 24). Press the UP or Down button
to change the LED status to correspond to the desired
Heat Delay Value.
• To save the current displayed value, push the OPTION
SETUP / STORE button and hold it for at least 2 seconds.
When the value is saved, the red LED will flash a few
times and then normal display will resume.
NOTE:
While in either Setup mode, if no buttons are pushed for
60 seconds, the display will revert to its normal display,
exiting the Option Setup mode.
When saving, the
control board only saves the parameters for the
currently displayed mode (Option Byte or Heat
Delay).
Check
Alarm
History
Reset All
ASCDs for
One Cycle
Non Alarm
Condition Green
LED Flashing
Current Alarm
Flashed
Red LED
Table 24: Heat Delay
Heat
Fan On
Delay
Heat
Fan Off
Delay
Red
LED 8
Red
LED 4
Red
LED 2
Red
LED 1
60
180
On
On
On
On
60
90
On
On
On
Off
60
60
On
On
Off
On
60
30
On
On
Off
Off
45
180
On
Off
On
On
45
90
On
Off
On
Off
45
60
On
Off
Off
On
45
30
On
Off
Off
Off
30
180
Off
On
On
On
30
90
Off
On
On
Off
30
60
Off
On
Off
On
30
30
Off
On
Off
Off
0
60
Off
Off
On
On
0
30
Off
Off
On
Off
0
10
Off
Off
Off
On
Non-std
Non-std
Off
Off
Off
Off
