ES20M losts conenction frequently and needs a restart to reconnect
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I have an ES20M in a bathroom for 4 weeks, it is quite close to the router (20 feet or so). I found it lost Wifi connection pretty frequently, like once a day.
and it could not reconnect and have to press the restart button to reconnect.
I tried set the ip address static but didn't help. I tried to ping the address from the router and found the round trip time is around 40ms and sometimes it lost a couple packets.
while other switches (HS220) at further locations only has 3ms round trip time.
Please advise . Thanks
BTW, I cannot select ES20M for the model and had to use HS220 as the model
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Hello @Michael.Rocks
Thank you for your details post, if there is some lag or packet lost when you ping smart switch from router, the local network itself is not stable enough or have some interferences for the dimmer switch.
- You could try some tips at the end of the article to adjust some settings for the wifi router:
What to do if my local network is not stable
- Try to create a Guest 2.4Ghz network, connect the dimmer switch to it and see if that makes any difference.
- Try to move switch and router closer to each other as possible if you have any old router or AP setup an extender AP and connect dimmer switch to it.
- Confirm kasa APP is up-to-date as well
If still the same, may I know the model of router, and the network topology, e.g. ISP X- Router C7 <Wireless>ES20M.
How about the Wifi Led status on the dimmer switch when a problem occurs, is it red or green, or no color? What is the signal strength of the ES20M, and the kasa app version.
Please share the MAC address of dimmer switch via private message, thank you
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Thank you for the infomation. I cannot move the router closer but I did create a guest network but no luck with that.
APP is on Android and up to date. version 2.39.0.1073
The router is verizon Fios-G1100, the topology is simple Verizon Fios box (Ethnet)- Fios-G1100 - ES20M, the signal is -52dbM
When the problem occurs, the LED was solid white and didn't respond to manual on/off.
PMed you the MAC, Thanks
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Thank you for very much for the case details
- You could try to adjust the router DNS settings to 8.8.8.8/ 8.8.4.4 save the settings and see if that makes difference
- Check if router has Advanced Wi-Fi settings like Band Steering (also called ‘Smart Connect’ or ‘Whole-Home Wi-Fi ‘), Wi-Fi Optimizing or ‘Channel optimization’ etc,
to isolate if the issue is caused by advanced wifi settings, try to turn them off for a test.
At the same time, man I know how did you find ES20M lost Wifi connection, does the device disappear from the router client list or was there is any error in the kasa APP?
or you still ping smart switch in the local network?
Can you still manually turn on/ turn off switch when it goes offline?
For 'the LED was solid white and didn't respond to manual on/off.' do you mean the white circle is solid white no matter when the switch is ON/OFF?
As the ES20M User Guide, the white circle led (Night light) will light up when the switch is turned off.
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I will try change the DNS, no advanced Wi-Fi setting was used.
Generally I noticed the issue when the light didn't trun on when
I walked in the room and manually cannot turn on the light either.
The last time it happened, the LED showed solid white and in
the app the switch greyed out.
I didn't try to ping when the issue occured but seems the switch
didn't response to buttons except reset and restart.
I will try more tests when it happens next time.
BTW, I disabled the ambient light in the switch.
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Hello @Michael.Rocks
Thanks a lot for more case details, If the motion-activated dimmer switch does not even respond to a manual ON/OFF, it can be due to the wiring of ES20M.
You could refer to HS220 setup video here to examine the wiring of ES20M
https://www.tp-link.com/support/download/hs220/#video
To clear the possible effects from the software settings like Long Press, double tap etc., it is recommended to perform a factory reset on the ES20M by pressing the reset button for around 10 secs, and reinstall it in the Kasa APP, when use it in default settings and test for 1-2 days, do you have trouble manually control the switch?
To better assist with your case we created a support email TKID220836258 for your case ,kindly check your email inbox.
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The issue happened yesterday but wife reseted it before I can test it.
I did factory reset it before and seems didn't change.
I checked the wiring and it seems correct and lines are firmly connected
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OK, it happend today and I can ping it from router successfully.
The app shows device unreachable. The led in solid white and not respond to button push.
Then after a while after this, the light turns on and the led start blinking green, at this time,
ping is 100% loss.
But it responds to buttons. In the app it still shows device unreachable.
Then the LED become red solid, manully can turn/off the light. App shows device unreachable.
Ping 100% loss.
Then I press the reset button, it backs to normal.
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