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	<title>Translations:KAVAN Alpha V2 1500mm - Instruction manual/171/en - Revision history</title>
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	<updated>2026-04-28T05:47:12Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://wiki.kavanrc.com/index.php?title=Translations:KAVAN_Alpha_V2_1500mm_-_Instruction_manual/171/en&amp;diff=37725&amp;oldid=prev</id>
		<title>FuzzyBot: Importing a new version from external source</title>
		<link rel="alternate" type="text/html" href="https://wiki.kavanrc.com/index.php?title=Translations:KAVAN_Alpha_V2_1500mm_-_Instruction_manual/171/en&amp;diff=37725&amp;oldid=prev"/>
		<updated>2025-09-04T14:32:02Z</updated>

		<summary type="html">&lt;p&gt;Importing a new version from external source&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;=== 7. TROUBLESHOOTING AND PROTECTION FUNCTIONS ===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; style=&amp;quot;text-align: center; width: 100%;&amp;quot;&lt;br /&gt;
|+&lt;br /&gt;
!Troubles&lt;br /&gt;
!Warning Tones&lt;br /&gt;
!Causes&lt;br /&gt;
!Solutions&lt;br /&gt;
|-&lt;br /&gt;
|The ESC didn’t work after it was powered on while the motor kept beeping.&lt;br /&gt;
|“BB, BB, BB……”&lt;br /&gt;
|The input voltage was beyond the operating voltage range of the ESC.&lt;br /&gt;
|Adjust the power-on voltage and ensure it’s in the operating voltage range of the ESC.&lt;br /&gt;
|-&lt;br /&gt;
|The ESC didn’t work after it was powered on while the motor kept beeping.&lt;br /&gt;
|“B-, B-, B-, B-……”&lt;br /&gt;
|The ESC didn’t receive any throttle signal from the receiver.&lt;br /&gt;
|Check if the transmitter and receiver are well paired, if any poor connection exists between the ESC and receiver.&lt;br /&gt;
|-&lt;br /&gt;
|The ESC didn’t work after it was powered on while the motor kept beeping.&lt;br /&gt;
|“B, B, B, B……”&lt;br /&gt;
|The throttle stick has not been moved to the bottom position.&lt;br /&gt;
|Move the throttle stick to the bottom position and calibrate the throttle range.&lt;br /&gt;
|-&lt;br /&gt;
|The ESC didn’t work after the throttle calibration while the motor kept beeping.&lt;br /&gt;
|“B, B, B, B……”&lt;br /&gt;
|The throttle range you set was too narrow.&lt;br /&gt;
|Re-calibrate the throttle range.&lt;br /&gt;
|-&lt;br /&gt;
|The ESC output suddenly reduced to 60% during the flight, the motor kept beeping after the flight completed but the battery was still connected to the ESC.&lt;br /&gt;
|“BB, BB, BB……”&lt;br /&gt;
|The ESC thermal protection has been activated.&lt;br /&gt;
|Improve the heat dissipating condition (i.e. add a cooling fan) or reduce the ESC load.&lt;br /&gt;
|-&lt;br /&gt;
|The ESC output suddenly reduced to 60% during the flight, the motor kept beeping after the flight completed but the battery was still connected to the ESC.&lt;br /&gt;
|“BBB, BBB, BBB……”&lt;br /&gt;
|The low-voltage cutoff protection has been activated.&lt;br /&gt;
|Change another pack; lower down the cutoff voltage or disable the LVC protection (we do not recommend this).&lt;br /&gt;
|}&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;1. Start-up Protection:&amp;#039;&amp;#039;&amp;#039; The ESC will monitor the motor speed during the start-up process. When the speed stops increasing or the speed increase is not stable, the ESC will take it as a start-up failure. At that time, if the throttle amount is less than 15%, the ESC will try to restart automatically; if it is larger than 20%, you need to move the throttle stick back to the bottom position first and then restart the ESC. (Possible causes of this problem: poor connection/disconnection between the ESC and motor wires, propellers are blocked, etc.)&lt;/div&gt;</summary>
		<author><name>FuzzyBot</name></author>
	</entry>
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