Kidde ARIES

August 2013 5-2 P/N 06-236530-001
Battery Charging Fault On Failure of the battery-supervision
circuitry
• Check battery connections to main
circuit board TB3. Refer to Figure 2-9.
• Disconnect battery leads from main
circuit board TB3 and use digital volt-
ohm meter to measure battery open-
circuit voltage. Replace batteries if
open-circuit voltage is less than 19.5
Vdc.
• Replace the power supply assembly.
See Figure 2-4
• Replace printed-circuit board. See
Figure 2-6
Battery Disconnected
Fault On
Faulty battery connection
Note: Battery disconnected-fault
messages do not disappear
immediately when corrected. The
control unit only rechecks the battery
connection once per minute.
• Check battery connections to main
circuit board TB3. Refer to Figure 2-9.
• Disconnect battery leads from main
circuit board TB3 and use digital volt-
ohm meter to measure battery open-
circuit voltage. Replace batteries if
open-circuit voltage is less than 19.5
Vdc.
Configuration Memory
Checksum Failure
Internal software fault • Re-upload applications program
• Re-test the system for proper
functionality
Configuration Memory
Write Failure
Faulty upload of applications program
or improper execution of a
configuration change via the menu
system
• Re-upload applications program if
message occurs after configuration
upload
• Re-execute configuration change via
menu operation if message appears
after menu operation
Control Unit Ground Fault
-Vdc ON
Low impedance path between
negative field conductor and earth
ground. Normal earth-ground offset
voltage is 6.6 Vdc (nom.) relative to
system common (e.g., main circuit
board TB2-1 or TB2-3).
• Continuously monitor DC voltage
between earth-ground stud on left side
of back box and main circuit board TB2-
1. Voltage should be 6.6 (nom.) Vdc.
Earth ground is positive relative to
system common.
• Remove field circuits one at a time until
earth-ground offset voltage restores to
6.6 (nom.) Vdc.
• Check for connections to earth ground
on field circuit whose removal restored
proper earth-ground offset voltage.
Table 5-1. General System Events (Continued)
General System Events
Error Message Probable Cause Corrective Action