Omron KP100G, Technical Manual

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KP100G
47
Fault Message Fault definition Possible Causes
Proposed Actions for
End-user
Proposed Actions for Professionals
E2-4 : Isolation fault
Insulation resistance
has dropped in the solar
module equipment. 1. The PV array installation
or the array themselves
might be faulty. 1. Make sure the breaker and switch
on AC side are close. Operation
will restart automatically when the
voltage from the utility returns to
normal.
2. Check the AC wiring
3. If the problem persists, contact the
store from which you purchased
the product or your installer.
1. Make sure the breaker and switch
on AC side are close.
2. Check the AC wiring
3. If the problem persists, please
replace the inverter.
E3-4:Over
Temperature
KP100G internal
temperature is high. 1. Ambient temperature is
too high.
2. Heat dissipation problem
3. Inverter is abnormal.
1. Make sure the ambient temperature
of installation is less than 55
°
C.
Operation will restart
automatically when the
temperature returns to normal.
2. Check the space near the heat sink.
3. Remove any obstacle that block.
the heat dissipation near heat sink
4. If the problem persists, contact the
store from which you purchased
the product or your installer.
1. Make sure the ambient temperature
of installation is less than 55
°
C.
2. Check the space near the heat sink.
3. Remove any obstacle that block
the heat dissipation near heat sink.
4. If the problem persists, please
replace the inverter.
A2-5: Fan Lock
The fan rpm has
dropped. 1. Something is blocking the
ventilation holes.
2. The end of life time of the
fan.
3. The fan is abnormal.
1. If something is blocking the
ventilation holes in the side panel,
remove it.
2. If nothing is blocking the
ventilation holes, the fan may have
reached the end of its service life.
Contact the store from which you
purchased the product or your
installer.
1. If something is blocking the
ventilation holes in the side panel,
remove it.
2. If nothing is blocking the
ventilation holes, the fan may have
reached the end of its service life.
Call your local dealer.
Other Error messages
The KP100G detects an
abnormality.
1. Contact the store from which you
purchased the product.
The main ground-fault
breaker trips frequently.
Ground faults are being
caused by electrical
appliances, the
KP100G, or the solar
modules. 1. Check to make sure that the ground
faults are not being caused by
electrical appliances.
2. If no abnormalities are found,
contact the store from which you
purchased the product to measure
the insulation resistance of the
KP100G and the solar modules.
Also describe the circumstances
under which the problem happens
(for example, the problem occurs
on the morning after a rainy day,
etc.).