305
FORM 160.54-M1
ISSUE DATE: 10/25/2019
JOHNSON CONTROLS
JCI COMPANY CONFIDENTIAL
34
SECTION 34 - DIAGNOSTICS AND TROUBLESHOOTING
The problems that could be encountered in the OptiV-
iew Control Center are in the following categories:
• Keypad
• Display
• Serial Input/Output (I/O)
• Digital Input/Output (I/O)
• Analog Inputs
There is a Diagnostic and associated Troubleshooting
Procedure for each category. They are described on the
following pages. Each diagnostic is accessed from the
DIAGNOSTICS MAIN Screen, which is entered using
the procedure below. If there is an OptiView Control
Center problem, determine the category of the prob-
lem. Then perform the applicable diagnostic. If the
diagnostic reveals a malfunction, perform the trouble-
shooting procedure to locate the defective component.
There are several documents that must be referred to
while performing the Diagnostics and Troubleshooting
procedures. Each procedure references the Section and
figures of this manual that describe the operation of the
component being tested. Also, the applicable OptiView
Control Center wiring diagram must be used as listed
in the Associated Literature table at the front of this
manual.
There are two versions of the Diagnostics screens
available as follows:
1. Shown in
Figure 98 on page 257 through Figure
. These screens are used during
the diagnostics and troubleshooting process. They
allow output states to be changed. Access the DI-
AGNOSTICS MAIN Screen as follows:
a. The chiller must be stopped.
b. Place Compressor Start/Stop switch in the
Stop-Reset position (O).
c. Ensure the Compressor motor current is 0%
FLA.
d. Log in at SERVICE access level using access
code 1 3 8 0.
e. Move Microboard Program Switch SW1-
4 (Microboard 031-01730-000); SW1-3
(Microboard 031-02430-000/001 or 031-
03630-001) to the ON position. A watchdog
reset will occur and the boot-up process will
com-mence. At the completion of the boot-
up pro-cess, the DIAGNOSTICS MAIN
Screen will appear.
If the Program Switch is moved to the ON
position before step 4 above is performed,
the LOG IN key will be displayed and
logging in at SERVICE access level must
be performed before the Main Screen is
displayed.
2. Not shown. Available when logged in at SER-
VICE access level, whether the chiller is running
or not. Accessed from the SETUP Screen via the
SETPOINTS Screen. There are two screens avail-
able that allow the Analog Input voltage levels and
Digital I/O states to be monitored. These screens
are preceded by a general screen that provides the
installed software versions.