No Internet Link On Honeywell Thermostat

This slice explores solving Honeywell WiFi thermostat connection problems, every bit we notice on our Honeywell RTH9580WF internet controlled thermostat, although this info applies about equally well to Honeywell’s other wireless thermostats, including the RTH8580WF, VisionPRO TH8320WF, VisionPRO 8000, et al.

Solving Honeywell WiFi Thermostat Connection Problems

By this, we mean that the t-stat will not connect to your home Wi-Fi network. It may or may not accept been able to connect prior. Common causes for this type of failure to connect nosotros list next.

1.one Wi-Fi Network Not Found in Scan

Trouble

Your wireless network does not show up in the list of in-range networks that the t-stat discovers during a WiFi browse during setup.

Solution

Make certain you power upwardly your router, and that your WiFi SSID is not hidden (beingness broadcast).  Most routers circulate the network name SSID past default.  But yous may have hid your SSID for more security.  If so, and then your network will non appear in the in-range networks list when the t-stat scans for networks.  So you’ll have to enter your network proper name manually as well equally the security protocols it uses (WPA, WEP, WPAT, TKP, AES, …).

For hidden WiFi networks, many Honeywell smart thermostats have an

Other
button. Apply this button to encompass the case where your network does non appear in the list.  When you lot press that, the t-stat prompts you to enter your network details as discussed.  Just exist conscientious to avoid typos though.  A incorrect network name, password, authentication, or encryption protocol entered here volition keep your t-stat from connecting.

1.two Wi-Fi Network Parameters have Changed

Problem

That is, the access betoken password, network name, or network security settings may have changed.  This often happens when yous buy a new router.  Unless yous program set it upwardly with the same network information, a new router virtually certainly will employ a different SSID and countersign.

Solution

Gather your correct Wi-Fi network proper name and password.  Then ready the t-stat to connect to
that
wireless network.

Some t-stats need a hard reset to modify the network that they try to connect to upon start upward, such every bit the RTH8580WF does.  But others, such as the RTH9580WF pictured side by side, allow y'all to go in and change the network settings without a factory default reset.

1.three Router May Demand a Reboot when Solving Honeywell WiFi Thermostat Connection Bug

Trouble

Your router may have received an update, experienced a ability surge, or caught a firmware problems.  These gotchas may corrupt the RAM in the router.  Thus, they can interfere with how information technology responds to connection requests from Wi-Fi based appliances, like the Honeywell wireless thermostat.

Solution

Restarting the router clears out working retentiveness, and allows the router to start again from a known-clean point.  Rebooting a router / access point frequently restores proper router operation.

one.4 Interference Degrading the WiFi Connexion

Problem

Well-nigh Honeywell wireless t-stats talk to the network using the 802.11g WiFi standard.  Transmissions similar this occur in the 2.4 Ghz. frequency range.  At present ii.4 Ghz. is also a popular frequency band for many devices.  These include other Wi-Fi networks as well as non Wi-Fi devices such as cordless phones, microwave ovens, babe monitors, Bluetooth speakers, and dwelling theater system remote controls.  In that location’due south a lot of traffic in that band thus.  That’s quite so in crowded apartment buildings or closely spaced housing.  So now and so, your Honeywell thermostat may fail to connect or to maintain connection with your router due to this interference.

Solutions

Get rid of the source of the interference if possible. For starters, effort turning off any cordless phones in your house and see if the problem goes abroad.  If so, replace your phones (including the base unit) with i that runs on different frequencies than 2.iv Ghz.  Many of the newer wireless phones operate in the ane.ix Ghz. band.  They design these not to interfere with WiFi.  But don’t buy ane if yous’re not sure what frequencies it works on.

Practice likewise with other wireless devices also.  Effort turning them all off and see if the problem disappears.  Then, plough them each back on, one by one, and picket the reaction of the t-stat later each.  If the thermostat connection goes bonkers after you ability up a certain device, and then that’s likely the one causing the interference.  So endeavour moving this appliance further abroad from the t-stat and router.

Reposition your router closer to the t-stat.

1.five Thermostat Too Far Away from your Wireless Router when Solving Honeywell WiFi Thermostat Connection Bug

Problem

Even though the signal strength of the Wi-Fi network might show equally full strength, connection may still neglect.  This is due to multi path signals between your router and t-stat and / or interference from nearby devices.

Solution

Move the router closer to the t-stat.

Or, try the answers in problem 1.4 to a higher place.

one.6 Defective or Misconfigured Router / Access Point

Problem

Bank check this by trying to connect to your wireless router with another WiFi device.  Try this with a tablet, mobile phone, laptop, or even a desktop figurer via Wi-Fi.  Now if these clients fail to connect, but did connect earlier this t-stat outage occurred, then try the following.

Solutions

Endeavor resetting your Wi-Fi enabled router to manufacturing plant defaults,.  Then, when it comes dorsum up, make the needed tweaks to it to make full your network needs.  Finally, try again to connect the thermostat.

If that measure fails, switch to a dissimilar router.  That’southward non as well expensive these days.  Indeed, routers like those that encounter minimal speeds of Honeywell wireless thermostats, are quite cheap (under $40), and reliable.  Check around for them on eBay.  Now Honeywell wireless thermostats need footling internet bandwidth. So mostly they work very well with even the cheapest wireless routers.

i.seven Broken Thermostat

Problem

If none of the above fixes solves the problem, you may accept a defective thermostat.  Indeed, over time, most electronic parts like those in the Wi-Fi radio in the thermostat, weaken and fail to perform likewise every bit they did when new.  The manual power of the thermostat may autumn to such a low value that its signal can no longer reach the router.  Wireless thermostat parts are especially subject to this sort of clothing, as the thermostat maintains constant (24 X 7) contact with the Honeywell Total Connect Comfort  servers via the internet.

Solution

Replace the thermostat.  Effort a different Honeywell wireless thermostat.  Like wireless access point electronics, thermostats do age likewise.  If yous’re thermostat is more than a few years old, it’due south probably time to replace / upgrade it anyway, especially if it’due south causing problems.

one.8 Y'all May Find a Defective Furnace when Solving Honeywell WiFi Thermostat Connection Problems

Problem

Your furnace supplies 24 volts Ac to most wireless thermostats, via an internal power supply.  This free energy reaches the t-stat via the connecting wiring from the furnace to thermostat.  If this Air conditioning supply becomes intermittent, noisy, drops or raises in voltage a lot, so the thermostat often fails.

Solution

Check that the Ac voltage at the thermostat terminals is 24 volts Air-conditioning, plus or minus ten pct. If not, call a furnace repair technician, and have her troubleshoot your furnace and repair its power circuitry.

Solving Honeywell WiFi Thermostat Connectedness Problems –



Thermostat Keeps Losing Connection

Consider the following solutions if your Honeywell wireless thermostat is able to connect to your home Wi-Fi network, merely oftentimes loses that connectedness for the various reasons discussed in this section.

2.1 Internet service Temporarily Unavailable

Solution

Endeavor accessing the net through some other device on the same Wi-Fi network as your thermostat.  If they do not piece of work either, and so notify your internet service provider about the problem, and wait for service to return.

two.two E02 and E43 Mistake Messages

S
ome Honeywell thermostats display these errors when the Wi-Fi connection has been lost or cannot be initiated due to the reasons discussed above.

Solution

Execute items in the kickoff major section in a higher place to troubleshoot this trouble.

2.3 Router Lost Power

Mayhap your wireless router has been disconnected from mains ability.

Solution

Verify that the router has power and is upward and running, past executing items 1. to a higher place.

ii.4 Modem Lost Power

Problem

In some installations, the cablevision / DSL modem and router admission bespeak are not in the same box.  Yet all of these components must be powered up and functioning properly in order for your thermostat to establish a successful cyberspace connexion with the Honeywell infrastructure servers.

Solutions

Check the status lamps on the modem, router, and wireless access indicate to verify right modem office.  Any red or blinking lights could bespeak a problem.

Cheque that you tin connect to your network with other wireless devices, as described in items 2.ane in a higher place.

2.v



Honeywell Total Connect Comfort Servers may be Offline

Problem

Sometimes, they take down Honeywell Total Connect Comfort servers to apply upgrades.  Or, your ain internet may have gone down due to storms and ability outages in your area.  In that location could be downed wires, exterior equipment failures, and and then on.  While your t-stat may indeed connect to your Wi-Fi access point, information technology notwithstanding may show an error message similar the i shown in the orange area in the next picture.

Solution

Await a few hours for the Honeywell servers to be brought back online.

two.6 Wi-Fi Channel Also Busy

Problem

Well-nigh routers broadcast on WiFi network channels 1, 6, or 11.  Information technology may exist that the channel your network is using is very busy with neighbors’ network traffic.

Solution

Change your router’s Wi-Fi channel.  To do that, log into the router’south admin pages.  Also note that the router will probable reboot subsequently you lot employ the modify.  Attempt channels i, 6, or eleven, and see if the lost net connexion problem persists.  If yous take access to an Android tablet or telephone, you tin endeavor Ampd’due south Wi-Fi Analyzer to run into which of these channels has the to the lowest degree traffic.

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References for Solving Honeywell WiFi Thermostat Connection Issues

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Revision History

• 2020-04-19: Added more tags.
• 2019-06-02: Tuned the targeting for ‘Solving Honeywell WiFi Thermostat Connexion Bug’, and added more links and tags.
• 2017-01-29: Originally published.