Low Output Voltage; Test 2; Measure Circuit Breaker Load-Side Voltage; Measure Voltage At E1 And E2 - Briggs & Stratton 040213 Service And Troubleshooting Manual

Service & Troubleshooting Guide - Home Generator System - Models 040213 and 040234 (15kW)
Section 2 - Troubleshooting Information
(FC_3)

LOW OUTPUT VOLTAGE:

The low voltage shutdown feature is designed to protect
the generator and its loads from an output voltage that is
too low. When utility power has failed and the generator
has stabilized with its transferred loads, the CMA senses
output voltage on
Wire #s E1
MODELS 040213 & 040234 - GENERATOR" on
page 66). If the CMA does not sense the proper
generator voltage, it will shut down the generator and
display on the unit control panel.
"FC_3"
NOTE
: If so equipped, the CMA simultaneously
signals the remote LED to flash in a sequence of
three blinks and displays "Low Output Voltage"
on the Statstation™ screen as well.
This condition may be caused by:
• A generator that is overloaded
• A restriction in the fuel flow
• A broken or disconnected signal lead
• Diminished engine power
• A failed alternator winding
• An open control panel circuit breaker
• Open wiring.
Test 1

Measure Circuit Breaker Load-Side Voltage:

Remove cover from generator circuit breaker.
"Manual Operation Test (No Load)" on page 61)
1. Reset the fault code detection system
"Resetting The Fault Code Detection System" on
page 20).
2. Ensure that the generator circuit breaker is in the
position and the 15 Amp fuse is installed
CLOSED
and functional.
3. Start the generator (See "Manual Operation Test
(No Load)" on page 61).
When the unit has stabilized, check the generator output:
and (See "SCHEMATIC -
E2
(E1 or E2)
(See
(See
4. Measure the voltage at the output side of the
circuit breaker (Fig. 18).
About 240VAC should be measured.
Fig. 18 - Measure Output Voltage Of Generator
If voltage is OK:
• Proceed to test 2

Test 2

Measure Voltage at E1 and E2

.
Gain access to the generator control panel
To The CMA Board" on page
With the unit running,
1. Measure for 240VAC at the CMA pins (Fig. 19)
.
and E2
About 240VAC should be measured.
Fig. 19 - Measuring Voltage E1 And E2
If no voltage is present:
• Repair or replace wires between the circuit
breaker and E1 and E2.
(See "Access
19).
E1
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