Rheem GEN12S Manual Del Operador página 17

Low Voltage (Generator)
This fault is indicated by fault code FC_3 and three blinks on
the LED indicator. This condition is caused by a restriction in
the fuel flow, a broken or disconnected signal lead, a failed
alternator winding, the control panel circuit breaker is open,
or Home Generator System is overloaded.
To remedy the problem, contact your local service center.
Engine Fail To Start
This fault is indicated by fault code FC_4 and four blinks on
the LED indicator. This feature prevents the generator from
damaging itself if it continually attempts to start in spite of
another problem, such as no fuel supply. Each time the
system is directed to start, the unit will crank for
10 seconds, pause for 10 seconds, crank for 10 seconds,
pause for 10 seconds, and repeat. If the system does not
begin producing electricity after approximately 2 minutes,
the unit will stop cranking and the LED will blink.
Check to make sure the generator's main circuit breaker is in
the ON (closed) position in order for the sensing leads to
verify that the unit is running.
The most likely cause of this problem is no fuel supply.
Check the inside and outside fuel shut off valves to ensure
they are fully open. Other causes could be failed spark
plug(s), failed engine ignition, or the engine air filter is
clogged. You may need to contact your installer for
assistance if you can't remedy these problems.
Low Frequency
This fault is indicated by fault code FC_5 and five blinks on
the LED indicator. This feature protects devices connected to
the transfer switch by shutting the generator down if the
engine runs slower than the preset limit.
• If the generator output frequency is below 55 Hz for
three seconds, the generator will shut down.
This condition is caused by a failed engine governor or by
excessive loads on the generator. To remedy the problem,
you may need to contact your installer or local service center
for assistance.
Engine Overspeed
This fault is indicated by fault code FC_6 and six blinks on
the LED indicator. This feature protects devices connected to
the transfer switch by shutting the generator down if the
engine happens to run faster than the preset limit. The
overspeed fault is detected as follows:
• If the generator output frequency is 65-70 Hz, after
three seconds, the generator will shut down.
• If the generator output frequency is greater than 70 Hz,
the generator will shut down instantly.
This condition is caused by a failed engine governor. To
remedy the problem, you should contact your installer or
local service center for assistance.
Oil Temperature High
This fault is indicated by fault code FC_7 and seven blinks on
the LED indicator. The contacts of the temperature switch
(Figure 4) are normally open. If the engine oil temperature
exceeds approximately 140°C (284°F), the fault is detected
and the engine shuts down.
Common causes for this condition include running the unit
with all access doors removed, obstructed air inlet or
exhaust port, low oil level, or debris in the engine cylinder
cooling fins.
To resolve the problem, remove any accumulated debris and
obstructions and let the engine cool down. Ensure that the
Oil Service door and/or the Control Panel door is installed
whenever the unit is running.
Transfer Switch Fault
This fault is indicated by fault code FC_8 and eight blinks on
the LED indicator (if transfer switch is equipped with fault
detection).
To remedy the problem, you should contact your installer or
local service center for assistance.
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