My AC180 makes strange click noises

Product Discussion BLUETTI AC Series
1

My AC180 makes strange click noises when there is no sun. Click short break clack. I charge the battery via sun panell . As soon as I unplug from the closing time, the noise is gone. I have the battery right next to my bed in my bus / van, sleeping at night is hardly possible. In my opinion, is there a defect here?

2 Likes
2

Me too. Occurs 10 minutes before and after sunrise and 10 minutes before and after sunsetd.

3

My ac200max does that for 30 minutes sunrise and sunset. VERY annoying.
It’s like there is the wrong hysteresis built in to the charger to activate.

1 Like
4

@Toby @jack893 I’m sorry for the inconvenience. I have given back to our relative department. If there is any update, I will let you know.

5

@Toby According to the reply from our technician, the sound may be caused by the relay opening or closing.

6

@BLUETTI_CARE Thanks, the cause of the sound is clear – but the relay shouldn’t be switching on/off for 30 minutes straight, 2x/day. That’s poor programming.
Instead it should wait for a higher power before restarting (or turning off) for a larger hysteresis. That will reduce what’s called “chatter”.

7

@jCs We have firmware that may solve it, do you want to do a test? If yes, you can provide me with the information of the SN and the firmware version.

10

@BLUETTI_CARE Is there any improvement for AC180?

11

@jack893 If your AC180 does not have such problems and functions normally, we don’t suggest you to update the firmware.

12

@BLUETTI_CARE I want to improve it because there is such a problem with AC180.

13

@jack893 Kindly provide me with the information of the SN and the firmware version, thank you.

14

@BLUETTI_CARE
SN AC1802317001118744
ARM v2073.04
DSP v2077.06
BMS v1033.06

1 Like
15

@jack893 Thank you for the information. The firmware will be sent in 6 hrs.

16

@BLUETTI_CARE No more clicking noise. It’s quiet even when you put it next to you when you go to bed. At the same time I was loading a dc load at 50w and the fan noise felt quiet.
Perfect!!
Thank you.

17

@jack893 Thanks for your feedback.

18

I am having the same issue. Can I get a firmware update?

SN AC1802319000631719
ARM v2073.04
DSP 2077.06
BMS 1033.06

19

@Miles Thanks for the information. We will push the firmware in 24hrs then you can test it.

20

I am having the same issue. Can I get a firmware update?
SN
AC1802314000531011
ARM Current Version :
V2074.06
DSP Current Version :
v2078.06
BMS V1033.06
Ta

21

Mine too. Please help. Thanks
SN 1802328002034822
ARM v2073.04
DSP v2077.06
BMS v1033.06

22

I haven’t had any Firmware updates.
Will this still happen, or are you going to push the fix in an upcoming general firmware release?
Ta