Johnson Controls 40 25 TON, Installation Operation & Maintenance

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179
JOHNSON CONTROLS
5276178-JIM-C-0118
6
SERVICE MODE
To enter Service Mode, press the SERVICE key. The
following message is the initial screen and is displayed
when the SERVICE key is pressed, unless a Level 2
password is active.
SERVICE
ENTER PASSWORD
All the DIGITAL outputs (DO) except for the
compressors can be forced ON. In order to force the
outputs the LOCAL STOP switch must be in the OFF
position. To force an output ON use the ◄ or ► key
to navigate to the SERVICE DO section. Then use
the ▲ or ▼ key to select the output you want to force
ON. Press the

key and then use the ► key to switch
it from OFF to ON. Press the

key again to energize
the output. Repeat the above process in reverse to turn
the forced output back to OFF.
All the ANALOG outputs (AO) can be forced ON. In
order to force the outputs the LOCAL STOP switch
must be in the OFF position. To force an output ON
use the ◄ or ► key to navigate to the SERVICE AO
section. Then use the ▲ or ▼ key to select the output
you want to force ON. Press the

key and then use
the numeric key pad to enter the output value. Press the

key again to energize the output. Repeat the above
process in reverse to turn the forced output back to 0.0.
Failure to do so will leave the forced output value in
place until a different value is initiated by the operation
of the unit
.
The ► key can be used to jump to the beginning of
the next section of displays and the ◄ key can be used
to jump to the beginning of the previous section of
displays. The sections of displays are as follows:
•
Parameters
•
Analog Inputs
•
Digital Inputs
•
Digital Outputs
•
Analog Outputs
The following SERVICE MODE table (Table 79), lists
the Displayed Text, Input or Output type, Unit Control
terminal location (ID), Value Range, and when item is
displayed.