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9 Malfunctions and Errors
The solar charge controller is protected against damage by various measures. Nevertheless, always take utmost
care in the proper operation of the solar charge controller. Short hints of the malfunctions are indicated with the
help of the LCD display. However, errors are only properly indicated in which the system has been properly
installed. If there are other malfunctions than the ones described below, please check first of all if the solar charge
controller has been connected to the battery, the module and the loads correctly in the right polarity. Afterwards,
check the safety fuses.
Error message
The cause of the malfunction
Short circuit
Short circuit
The load current is too high and the
output is disconnected. Either the whole
Over current
consumption exceeds the max.
currents or the max. Pulse currents were
exceeded by using high surge appliances.
Battery has low capacity. To protect the
Low voltage
battery, all loads powered by the solar
charge controller will be disconnected.
The maximum allowable temperature has
b
een
h
eat generation the loads are disconnected
Over heat
automatically. As soon as the solar charge
controller has cooled down, normal
operation will resume.
In particular, the recharge process through
back-up generators or chargers tied directly
Over voltage
to the battery causes battery voltages
higher than 16.5V/33.0V.
•
There is no voltage feed from the battery.
LCD has no
•
current operating temperature is too high
display
or too low above/below the operating
temperature, causing LCD not to function.
d
exceeded.
In order to reduce further
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Remedy
Switch off all loads. Remove the fault,
the controller will switch on load
automatically after 1 minute.
ischarge
• Reduce loads or hours of operation of loads
to keep the battery from being discharged
deeply, or increase solar array to add
energy to the system.
• Connect all loads through the controller to
avoid strong discharge of the battery.
• It will restore only when the battery being
recharged and the voltage reaching the
reconnect voltage.
•
Check the ventilation at the back heat
sink and clean it if necessary.
• Protect the controller from direct sunshine.
• Reduce warming caused by appliances
near the controller.
• Reduce the loads or PV modules.
Disconnect external chargers, when the
battery voltage is lower than 15.5V/31.0V
controller automatically restored.
•
Check the battery connections and fuses.
•
Check the working temperature.
•
Reinstall the controller, disconnect
everything and connect it again in the
right order.
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