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Forum Discussion
RBK753 why does reset router needed to reconnect dropped device? (Lennox S30 thermostat)
Periodically one of my Lennox S30 thermostats will drop WiFi connection. When I try to reconnect it is unsuccessful and times out. However if I go to the Orbi and do a router reset, and then try to...
What I mean by reset is actually going onto the orbi admin web interface and doing a Router "Reboot".
When the thermostat shows no connection to the WiFi (it got dropped), going to that device and trying to reconnect fails. The network shows plenty of signal strength (-40dbm or so), however you can try and try again and it will simply timeout, connection failed. However if I go to the Orbi admin, and do a router reboot, wait for Orbi to completely come back up and then attempt to connect the thermostat it will connect on the first attempt. It seems like doing the router reboot is flushing something, and then the reconnection attempt is successful. My setup is a Motorola modem (latest) supporting Comcast ISP and Gig speed, very low latency. The thermostat hub is in the attic and probably closest to a wired Orbi satellite, but there is some ductwork and it may see the main Orbi router better which is perhaps 25 feet away.
Orbi RB753 with current firmware (no updates available) V4.6.9.11_2.3.5
| Region | North America |
| 2.4 GHz Channel | Auto (5) |
| 2.4 GHz Wireless mode: | Up to 1147 Mbps |
| 5 GHz Channel | 36 + 40 + 44 + 48(P) |
| 5 GHz Wireless mode: | Up to 2402 Mbps |
What is the size of your home? Sq Ft?
What is the distance between the router and 📡 satellite(s)? 30 feet or more is recommended in between RBR and RBS🛰️ to begin with depending upon building materials when wirelessly connected.
The home is >4000ft.
RBR router ------> wired> --- Sat1..........wireless Sat 2
thermostat
Thermostat is between Router & Sat1, and the admin web interface for Orbi shows it is connecting to the thermostat on the main Router, 2.4Ghz.
What is the distance between the router and 📡 satellite(s)?
Possible that the thermostat is having a hard time keeping connected due to all the wifi signals coming from the RBR and the two RBS.
For that size of home, you only need the RBR and one RBS. https://youtu.be/UR0viMLISz4
Try this, Turn OFF 1 RBS.Set the Transmit power on the RBR to 50%. Set 40Mhz co-existence. Under Advanced Tab/Advanced Settings/Wireless Settings
Set manual channel 1 and 40.
I'll try that. Today also I'm having the thermostat hub (it's actual Wifi which is located near the furnace in the attic) moved. The thermostat S30 that you see is merely a display. I'd like the hub moved away from the ductwork and will see if that resolves issues.
As for the number of Sats, the house is 4200 sq ft which doesn't include a 4 car garage and covered patio. Their are Wifi devices around the perimeter of the house so you are really trying to cover about 5000 sq feet single story. The RBR is located on the far right of the house next to the ISP access and modem. RBS1 gets ethernet cable to a location in the middle of the home which also allows further distribution through switches to all the media devices. RBS2 is on the left side of the home and serves devices in the guest wing, patio and garage.
If I still have issues I can try your suggestion.
But I'd like to go back to the original question. When the device has dropped Wifi connection, I can stand there and repeatedly pound in the password for the network, try to connect, and it will timeout. No connection (and yet it sees the network at about -40dBm). However if I go to Orbi and reboot the router and then try to connect....voila...it connects first time. What did rebooting the router suddenly accomplish such that the device will easily connect first attempt?