# 4CHPROR3 losing connection

**URL:** <https://forum.ewelink.cc/t/4chpror3-losing-connection/206423>\
**Category:** eWeLink App\
**Created:** [November 5, 2025, 1:41pm UTC](https://forum.ewelink.cc/t/4chpror3-losing-connection/206423 "2025-11-05T13:41:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![findleyj](https://avatars.discourse-cdn.com/v4/letter/f/94ad74/32.png) [@findleyj](https://forum.ewelink.cc/u/findleyj)\
**Post date:** [November 5, 2025, 1:41pm UTC](https://forum.ewelink.cc/t/4chpror3-losing-connection/206423/1 "2025-11-05T13:41:00Z")

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I have two 4CHPROR3 installed in the same location.

One works flawlessly with no issues.

The other keeps losing its network connection. Sometimes it happens several times in a day. Sometimes it goes several days with no issues. It always reconnects on its own but in the meantime scheduled events or actions are missed.

I have checked for updates and done them all as soon as they are available. I just updated to 3.8.2 this morning.

Is this unit just failing and needs to be replaced? Is there something else I can try to get it working correctly?

Thanks for any suggestions.

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**Author:** ![alfred.tihasekodu](https://avatars.discourse-cdn.com/v4/letter/a/cdc98d/32.png) [@alfred.tihasekodu](https://forum.ewelink.cc/u/alfred.tihasekodu)\
**Post date:** [March 20, 2026, 1:54pm UTC](https://forum.ewelink.cc/t/4chpror3-losing-connection/206423/2 "2026-03-20T13:54:52Z")

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> [@findleyj](#):
>
> 4CHPROR3

Experiencing the similar about all of my 3 devices CK-BL602-W102SW18-01(226) Ewelink WIFI Smart Circuit Breaker 1P+N 16A 20A (firmware 1.2.1).  
But NOT experienced it with CK-BL602-SWP1-01(182) eWelink 16A/20A EU WiFi Smart Socket (firmware 1.3.1).

Checked carefully WiFi settings:

- specific SSID only for eWeLink devices
- transmission protocol fixed to 802.11n
- WPA2-PSK
- only 2.4GHz / 20 MHz
- only the cleanest channel (in my case 11)
- permanent IPs  
Still, no success.

I suspect, that the firmware of some Sonoff/EweLink devices is buggy, causing some memory leak or buffer overflows while renegotiating with WiFi connection. But cannot approve it due the fact that Sonoff/EweLink firmware is not publicly available, at least I had no success to find it.