Figure 9
：
Temperature compensation using battery temperature sensor
6.5 Protections
• Overload or short circuit; while in the inverter mode, the PowerCombi Inverter/Charger will
shut down automatically if the overload or short circuit lasts over 3 seconds. The PowerCombi
Inverter/Charger will automatically restart. After 4 failed start attempts, the PowerCombi
Inverter/Charger shuts down permanently. After the overload short circuit is removed, restart by
switching the PowerCombi Inverter/Charger manually off and on with the main switch.
• High temperature; if the temperature of the PowerCombi Inverter/Charger exceeds 104°F
[40°C], it will reduce power. If it exceeds 140°F [60°C], it will shut down, trigger the status LEDs
and optionally a remote alarm. When cooled off, the PowerCombi Inverter/Charger will
automatically restart.
• Under and over voltage; the AC-input of the PowerCombi Inverter/Charger is, within limits,
protected against over and under voltage. See specifications. If the AC-input voltage is out of
operating range, the unit will switch to inverter mode, disconnecting both AC inputs and it will
switch back if the AC-input voltage is within range again. The DC-input of the PowerCombi
Inverter/Charger is also protected against over and under voltage. See specifications. The
PowerCombi Inverter/Charger switches off if the DC-input voltage is out of range.
• Reverse polarity; an integrated fuse protects the PowerCombi Inverter/Charger if the battery is
connected in reverse. Because the internal fuse is non-replaceable, the PowerCombi
Inverter/Charger must be returned for repair if the fuse blows.
• AC Input breaker; A 30A thermal fuse protects the transfer switch of the PowerCombi
Inverter/Charger against overload. If the status LEDs indicate an overload, proceed as follows:
Step 1. Turn AC power off and disconnect all loads from the PowerCombi Inverter/Charger.
Step 2. Move the main switch to the Off position ().
Step 3. Investigate the cause of failure of the thermal fuse like overload or short-circuits.
Step 4. Wait for at least two minutes and then reset the fuse by pushing the button, item G in
Figure 3, at the AC side of the PowerCombi Inverter/Charger.
Step 5. Connect the PowerCombi Inverter/Charger to the power sources again.
Step 6. Turn on the PowerCombi Inverter/Charger.
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