TP-6137 5/03 49Section 8 Controller Troubleshooting
Yes
B
D LOP—Check the oil level,
the oil pressure, and the
alarm switch.
D HET and HCHT—Check if
water flows out of the
exhaust manifold and if the
two alarm switches work.
D Are these checks okay?
No
Can you stop the engine
using the on/off switch?
Change the control panel.
Yes
After the start switch is
release, is the engine
operating?
No
Is 12 DC voltage present on
theK2relaycoil?
No
Is any red LEDs (LOP, HET,
HCHT) lit?
No
Change the control panel.
Generator set checks out
okay.
No
Are the 30-87 terminals of
the K2 relay open?
Change the K2 relay.
Yes
Yes
Figure 8-8 Troubleshooting Relay Controller Control Panel (3 of 4)
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