Kohler 18RESL User Manual

TP-6519 8/1740 Section 4 Controller
Code Fault Description Check
See
Section
AF Auxiliary
fault
Indicates a shutdown initiated by pushing the
emergency stop switch or by tripping the
circuit breaker. (TRES models only)
Not used on single-phase models.
Reset the emergency stop button. Identify
and correct the cause of the tripped circuit
breaker before resetting the circuit breaker.
(TRES models only)
O/M
HE High engine
temperature
Shutdown occurs if the engine coolant
temperature exceeds the maximum
temperature for more than 5 seconds. This
protective becomes active after the engine
reaches the crank disconnect speed.
Check for blocked air inlets and exhaust
outlets.
1.7
LOP Low oil
pressure
Shutdown occurs if a low oil pressure
condition exists for more than 5 seconds.
This protective becomes active 30 seconds
after the engine has reached crank
disconnect speed (30 second inhibit).
Note: The low oil pressure shutdown does
not protect against low oil level. Check the
oil level at the engine.
Check for leaks in the lubrication system.
Check the oil level and add oil if the level is
low.
Check low oil pressure switch connections
and operation.
Check the oil pump and lubrication system.
—
O/M
5.10
Engine
S/M
OC
Overcrank Shutdown occurs after 3 unsuccessful
starting attempts. The crank cycle is set for
three starting attempts of 15 seconds
cranking and 15 seconds rest.
Check the fuel supply valves and pressure.
Check spark plug and battery.
See Troubleshooting Chart, generator set
cranks but does not start.
5.12
O/M
3.3
Locked rotor The generator set shuts down on an
overcrank fault if no engine rotation is
sensed. Shuts down 3 seconds after the
fault is detected.
Check mag pickup connections and
operation.
Check for a locked rotor.
5.9.4
5.4
OF Over
frequency
Shutdown occurs when the governed
frequency exceeds 110% of the system’s
frequency setpoint for more than 5 seconds.
This protective becomes active 10 seconds
after engine start (10 second inhibit).
Check system frequency setting (parameter
UU) on controller.
4.5
Measure output frequency and adjust, if
necessary.
5.9.5
Check governor system condition and
operation.
5.9
OS Overspeed Shutdown occurs if the engine speed
exceeds 110% of the normal running speed
for more than 0.3 seconds.
Check governor settings and operation. 5.9
OU * Over
voltage
Shutdown occurs if the voltage exceeds
120% of the system nominal voltage for more
than 2 seconds.
Check AC voltage.
Check wiring and connections.
5.7
7
UF Under
frequency
Shutdown occurs when the governed
frequency falls below 54 Hz for more than
5 seconds. This protective becomes active
10 seconds after engine start. (10 second
inhibit).
Reduce the load and restart the generator
set.
—
UU Under
voltage
Shutdown occurs if the voltage falls below
80% of the nominal system voltage for more
than 10 seconds.
Reduce the load and restart the generator
set.
—
Check wiring and connections. 7
Check controller configuration, system
voltage and frequency (parameter UU).
4.5
Check AC voltage and adjust, if necessary. 5.7
Check the SCR module. Replace if
necessary and test voltage again.
4.8
Separately excite unit. 5.2
Check stator continuity. 5.3
SCF0 Software
Comm.
Fault 0
Indicates a software or communication
problem within the ADC-RES.
Replace the controller. 4.9
* ADC-RES only Engine S/M = Engine Service Manual
O/M = Generator Set Operation Manual
Figure 4-7 Fault Codes

Kohler 18RESL Specifications

General

Brand	Kohler
Model	18RESL
Category	Portable Generator
Language	English