Generac Power Systems GP Series Diagnostic And Repair Manual

Section 4 AC Diagnostic Tests
60 Diagnostic Repair Manual
Test 48 – Check Hour Meter
Procedure
1. Disconnect wire 14 from the hour meter.
2. Install new 10 Amp fuse.
3. Set start-run-stop switch (SW1) to START.
4. Check to see if fuse blows open.
Results
1. If fuse did not blow open replace the hour meter.
2. If fuse blows open repair or replace wire 14
between the resistor (R1) and the hour meter (HM)
or between the HM and the fuel shutoff solenoid
(FSS).
Test 49 – Check Wire 15B
Procedure
1. Set DMM to measure resistance.
2. See Figure 4-55. Disconnect wire 15B from the
Start Stop Relay (SSR).
3. Connect one meter test lead to wire 15B previously
removed.
4. Connect the other meter test lead to frame ground.
a. Approximately 20K ohms should be measured.
5. If continuity or zero resistance was measured
remove the J2 connector from the printed circuit
board and repeat steps 3 and 4.
Figure 4-55. Check Wire 15B
Results
1. If continuity was measured in step 4 but not in step
5, replace the printed circuit board.
2. If continuity was measured in step 5, wire 15B is
shorted to ground, repair or replace wire 15B
between the SSR and printed circuit board.
Test 50 – Check Wire 167
Procedure
1. Set DMM to measure resistance.
2. See Figure 4-56. Disconnect wire 167 from the
start-run-stop switch (SW1).
3. Connect one meter test lead to wire 167 previously
removed.
4. Connect the other meter test lead to frame ground.
a. Infinity should be measured.
5. If continuity or zero resistance was measured
remove the J2 connector from the printed circuit
board and repeat steps 3 and 4.
Figure 4-56. Check Wire 167
Results
1. If continuity was measured in step 4 but not in step
5, replace the printed circuit board.
2. If continuity was measured in step 5 wire 167 is
shorted to ground. Repair or replace wire 167
between the SW1 and printed circuit board.
Test 51 – Check Wires 11S & 44S or
11S & 22S
Procedure
1. Set DMM to measure resistance.
2. Disconnect the J2 connector from the printed
circuit board.
3. Connect one meter test lead to pin location J2-10
wire 44S of the connector just removed.
4. Connect the other meter test lead to wire 44S at
terminal block 2 (TB2).
a. Continuity should be measured.
5. Connect one meter test lead to pin location J2-12
wire 11S.
SSR
15B
1413
9 10 12
5
1 2
6
4
8
229
0
18
14
15
15
15
004632
167
(START)
0
15
15
17
4
5
6
1
2
3
RUN
STOP
0
004633

Generac Power Systems GP Series Specifications

General

Brand	Generac Power Systems
Model	GP Series
Category	Portable Generator
Language	English