Setting The Exercise Timer; Control Module Assembly (Cma); Power During Cma Fault Conditions - Briggs & Stratton 040213 Service And Troubleshooting Manual

SETTING THE EXERCISE TIMER

1
The Home Standby Generator System is equipped with
an exercise timer that will start and exercise the system
once every seven days. During this exercise period, the
unit runs for approximately 20 minutes and then shuts
down. Electrical load transfer does not occur during the
exercise cycle (unless a utility power outage occurs).
A switch on the control panel is labeled
(See "SYSTEM CONTROLS" on page 13.).
The
specific day and the specific time of day
pressed is retained by a memory chip on the Control
Module Assembly (CMA). The day and time is then
referenced by the chip to automatically initiate the
system exercise cycle in seven days.
To perform the set exercise procedure:
1. Make sure the SYSTEM switch is set to
2. Choose the day and time you want your Home
Standby Generator System to exercise.
3. Press and hold down the
three seconds. The LED on the control panel will
flash until "SET EXERCISE" is complete.
4. Release the
SET EXERCISE
Set exercise is complete.
As an example, if you press the
Sunday morning at 10:00 AM, the unit will run an
exercise cycle the following Sunday at 10:00 AM (± 30
minutes).
NOTE
: Set exercise will only work if the unit is
in the mode and this exact procedure is
AUTO
followed. The exerciser will need to be re-set if
the 12 VDC battery is disconnected or if you
remove the 15 AMP fuse.
If you want to change the day and time the unit
exercises, simply perform the set exercise procedure on
the exact day and time you want it to take place.
Page 18
Service & Troubleshooting Guide - Home Generator System - Model 040234 (15kW)
SET EXERCISE
this switch is
.
AUTO
switch for
SET EXERCISE
switch.
switch on
SET EXERCISE

CONTROL MODULE ASSEMBLY (CMA)

The Control Module Assembly (CMA) is a printed circuit
board that is integrated with the control panel of the
Home Standby System. It contains all the logic circuits,
operator controls and system displays necessary to
operate, program and protect the generator. In addition,
it also has an access port for a diagnostic service tool to
aid in troubleshooting external system components and
internal control module failures. The CMA interprets and
monitors electrical inputs from all related circuits
throughout the standby installation.
Before replacing the CMA, all other circuits must be
tested to ensure proper operation. When a failure in the
CMA has been determined, it must be replaced as a
complete assembly.
Functions of the CMA:
• Battery Trickle Charge
• Set Exercise Timer (SET EXERCISE)
• Manual Start (MANUAL OVER-RIDE)
• Sensing Utility Voltage
• Automatic Start, in event of utility failure.
• Automatic Engine Cool-Down Timer
• Fault Detection with Automatic Shutdown
• Fault Indication Display (LED)
• Diagnostic access port (SERVICE TOOL)
• Hour Meter

Power During CMA Fault Conditions

When the Home Generator System is in an uncorrected
fault condition, the automatic transfer switch defaults to
. This ensures that utility power is
UTILITY POWER
automatically applied to all circuits in the home
-regardless of an uncorrected generator fault.
If the unit fails to exercise at its prescribed time:
• Check the fault indication number displayed on
the generator control panel.
• Perform the SET EXERCISE procedure.
Section 1 - General Information