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Lithium Ion Battery Power Station for emergency and/or remote power needs.

2 Questions View all

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Yeti 1500X showing under temperature

My Yeti 1500X regularly shows being under temperature, at which point the app indicates the temperature being sub-zero (Celsius) and it will not charge. The unit is kept at room temperature (20-25 Celsius). Sometimes when the 240V output is loaded (>1kW) it can bring the apparent unit temperature back to something sensible and allow charging, but this is intermittent. GoalZero cannot provide any support as I'm in the UK - is there any information on troubleshooting and repairing what is presumably a faulty temperature sensor or circuit?

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Hi @nrw

Try a reset (soft and factory - one at a time and check in between resets) and also check that the firmware to up to date and see if that resolves the problem.

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Thanks - I've tried both soft and factory resets, and also done a battery reset (press and hold RESET and INFO for 5 seconds). Firmware is on the latest version (1.8.9).

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@nrw

best that I can find out is the the temp sensor is a thermistor hard mounted in the BMS section (Battery Management System) on a board in the unit.

As to its specifications idk.

How old is the unit?

There's a 2 year manufacturer's warranty which should apply even if not directly supported by Goal Zero, then by the seller from where you got it.

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Unfortunately it's 4 years old so definitely out of warranty. Thanks anyway.

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Just wondering if there is anyone out there who has schematics or further diagnostic info for the Yeti 1500X? The unit continues to show under temp (sub-zero) for most of the time that it's idle, although it does often jump back to a realistic temperature when the inverter is operational which sometimes lasts long enough to recharge.

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NRW will be eternally grateful.
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