Honeywell is one of the聽best聽thermostat聽manufacturers, and we proudly install them on a聽usual聽basis in聽the U.S.. They’re聽sturdy聽and聽dependable.聽Also, Honeywell is聽regularly聽enhancing聽its technology,聽bringing聽more features for your聽home.
Still,聽every thermostat聽can聽run into聽troubles聽at times.聽That's why聽we’ve聽put together聽this聽valuable聽handbook聽to聽go over聽troubleshooting. While Honeywell thermostat troubleshooting problems are rare, they聽do occur.
While you can聽typically聽repair聽most聽thermostat聽problems聽alone, they聽occasionally聽need聽Expert聽support. Our聽home comfort聽professionals聽are聽here聽to聽help聽when you need us. We’re聽only聽a call away at (866) 963-7996.
Let’s聽begin聽the process by聽figuring out聽what聽type聽of thermostat your聽house聽has.
What聽Type聽of Thermostat Do I Have?
There are three聽models聽of thermostats:
- Manual—This is the聽older聽dial-shaped thermostat. You won’t聽have聽error codes with this聽type, but it’s also the least efficient for聽saving on聽energy聽expenses.
- Programmable—This thermostat聽includes聽a digital screen and arrows you聽use聽to聽determine聽your desired temperature. You can also聽set聽daily programs to聽decrease聽the temperature when you’re聽gone聽and聽set it higher聽when you聽return.
- Smart—You won’t have to聽set聽any programs on this thermostat,聽as聽it聽learns聽your聽schedule. It聽intuitively聽raises and lowers聽the temperature when you or聽other household members聽are聽out and about聽to help you save on聽heating and cooling聽expenses. You can also聽change聽the temperature anywhere聽using聽your phone or other Wi-Fi-enabled device.
As聽you know聽most聽technologically advanced聽things, there are聽common聽malfunctions聽that聽can聽happen.聽Most聽of these聽problems聽don’t聽need聽pro聽help聽and are聽easy聽to聽repair聽alone.
Common Honeywell Thermostat Troubleshooting聽Errors
Each Honeywell thermostat has聽a unique聽group聽of codes聽assigned to聽the聽problems聽that聽happen.
Think how聽easy聽it can be to聽repair聽a computer by restarting it.聽Many times,聽troubleshooting聽a thermostat can be just as聽easy.
Here聽is a listing聽the most聽reported聽Honeywell thermostat聽problems. These聽apply to聽the following programmable thermostats:
Display is Blank
If the聽display聽is聽empty聽on your programmable thermostat, you聽could聽need to聽install new聽batteries. If that doesn’t聽fix聽the聽issue聽or you聽rely on聽a smart thermostat, there聽could聽be a wiring聽problem.
Next, you should聽make sure聽the power is聽enabled聽for your furnace or air handler.聽Verify聽the switch聽near聽the indoor聽system聽is .
In addition to that, you should聽make certain聽all furnace cabinet or air handler doors/panels are聽securely聽secured.
A loose panel聽may聽activate聽the safety switch, which聽stops聽power to the聽system.
Less frequently,聽a clear聽display聽might聽signify聽you聽need to聽get a new聽thermostat.
颁辞尘蹿辞谤迟听厂测蝉迟别尘听奥辞苍&谤蝉辩耻辞;迟听厂迟补谤迟
Ensure聽that your thermostat is聽set to聽“cool” or “heat,” not “off.”
When it's hot,聽Verify聽you聽schedule聽the thermostat聽beneath聽the聽ambient聽temperature.聽When it's cold,聽Verify聽it’s higher. This sounds聽silly, but we’ve seen it聽happen聽a lot of聽times.
Ensure聽the power switch聽near聽your indoor聽system聽is in the “on” position. You should also聽check聽the cabinet doors or panels are聽secure聽on your furnace cabinet or air handler.聽A loose聽panel can聽activate聽the safety switch,聽cutting off聽electricity聽to the聽unit.
Unit聽still won’t聽run?聽Verify聽circuit breakers haven’t聽tripped聽and that your HVAC聽System聽isn’t聽experiencing聽error codes.
“Cool On” or “Heat On” is聽Flashing
To begin,聽verify聽your thermostat is聽set to聽“cool” or “heat.”
Then,聽check聽it’s聽signaling聽the聽right聽system聽to聽run. This is聽typically聽demonstrated聽by “cool on,” “heat on” or聽an icon.
If聽these words聽or the聽illustration聽is聽blinking, your thermostat is in a five-minute delay聽mode. This聽mode聽stops聽your聽system聽from聽damaging聽short cycling. This聽could聽happen聽if聽you lose power.
Honeywell Thermostat-Specific Error Codes
Honeywell Lyric™ T5 Wi-Fi (RCHT8612WF/RCHT9510WFW)
- 164—Heat pump聽requires service. Call 天美传媒 at (866) 963-7996 蹿辞谤听丑别濒辫.
- 168—Wi-Fi radio error.聽Contact聽Lyric technical support at 800-633-3991. 170—Internal memory error.聽Contact聽Lyric technical support at 800-633-3991.
- 171—Set date and time.聽Finalize聽these settings so scheduling can聽take place.
- 173—Thermostat temperature sensor error.聽Contact聽Lyric technical support at 800-633-3991.
- 175—AC power聽restarted. No action聽necessary.
- 181/182—Put in a new聽air filter. Clear the聽screen聽by聽hitting聽“dismiss” after聽putting in聽a聽fresh聽filter.
- 184—Replace聽humidifier pad. Clear the聽monitor聽by聽tapping聽“dismiss” after聽putting in聽a聽new聽pad filter.
- 185—Put in a new聽dehumidifier filter. Clear the聽display聽by聽tapping聽“dismiss” after聽putting in聽a聽fresh聽filter.
- 187—Clean聽or聽Replace聽ventilator filter. Clear the聽display聽by聽hitting聽“dismiss” after聽putting in聽a聽fresh聽filter.
- 188/189—Install a new聽UV bulb.聽Contact聽天美传媒 at (866) 963-7996聽蹿辞谤听丑别濒辫.
- 210—Register online for聽outside聽temperature.聽Download聽the Lyric app to聽finish聽this step and ensure聽accurate聽thermostat operation.
- 388—Register online for remote access and聽outside聽temperature.聽Download聽the Lyric app to聽finish聽this step and ensure聽accurate聽thermostat operation.
- 399—No Internet.聽Confirm聽your network settings.
- 400—No Wi-Fi signal. Wait for the thermostat to reconnect or聽choose聽new Wi-Fi network.
- 508—Wi-Fi not聽set.聽Download聽the Lyric app and follow the聽steps聽to聽configure聽your thermostat.
For more聽details,聽see聽this thermostat’s聽.
Honeywell T6 Pro Smart Programmable Thermostat (TH411OU2005)
- 164—Heat pump聽needs聽service.聽Contact聽天美传媒 at } 蹿辞谤听蝉耻辫辫辞谤迟.
- 168—Wi-Fi radio error.聽Contact聽天美传媒 at (866) 963-7996 蹿辞谤听蝉耻辫辫辞谤迟.
- 170—Internal memory error.聽Contact聽天美传媒 at F:P:Sub:Phone} 蹿辞谤听丑别濒辫.
- 171—Set date and time.聽Finalize聽these settings so scheduling can聽operate.
- 173—Thermostat temperature sensor error.聽Contact聽天美传媒 at (866) 963-7996 蹿辞谤听蝉耻辫辫辞谤迟.
- 175—AC power聽reconnected. No action聽required.
- 177—Indoor temperature sensor error.聽Contact聽天美传媒 at (866) 963-7996 蹿辞谤听蝉耻辫辫辞谤迟.
- 178—Outdoor temperature sensor error.聽Contact聽天美传媒 at (866) 963-7996 蹿辞谤听丑别濒辫.
- 181/182—Get a new聽air filter. Clear the聽display聽by聽hitting聽“dismiss” after聽putting in聽a聽new聽filter.
- 183—Wash聽humidifier tank and聽add a new聽water filter. Clear the聽display聽by聽tapping聽“dismiss” after聽doing聽these聽tasks.
- 184—Install a new聽humidifier pad. Clear the聽monitor聽by聽hitting聽“dismiss” after聽getting a new聽pad filter.
- 185—Get a new聽dehumidifier filter. Clear the聽display聽by聽hitting聽“dismiss” after聽putting in聽a聽new聽filter.
- 186—Wash聽ventilator core. Clear the聽thermostat聽by聽tapping聽“dismiss” after聽finishing聽this task.
- 187—Wash聽or聽Get a new聽ventilator filter. Clear the聽screen聽by聽hitting聽“dismiss” after聽buying聽a new filter.
- 188/189—Replace聽UV bulb.聽Get in touch with聽天美传媒 at (866) 963-7996 蹿辞谤听丑别濒辫.
- 210—Register online for聽outdoor聽temperature.聽Download聽the Lyric app to聽finish聽this step and ensure聽accurate聽thermostat operation.
- 388—Register online for remote access and聽outdoor聽temperature.聽Download聽the Lyric app to聽finish聽this step and ensure聽accurate聽thermostat operation.
- 399—No Internet.聽Confirm聽your network settings.
- 400—No Wi-Fi signal. Wait for the thermostat to reconnect or聽choose聽new Wi-Fi network.
- 508—Wi-Fi not聽configured.聽Download聽the Lyric app and follow the聽steps聽to connect your thermostat.
For more聽information,聽see聽this thermostat’s聽.
Our Experts are聽Ready聽to聽Help
If you’re still聽experiencing聽problems聽after聽working through聽the troubleshooting聽process, our聽professionals聽are聽Ready聽to聽help.聽Reach us聽at (866) 963-7996 and we’ll聽arrive聽quickly聽to聽figure out聽the聽problem.
If you聽rely on聽a dated聽thermostat,聽right now聽is a聽great聽time to聽consider聽a聽new thermostat. Thermostat technology has聽come a long way聽in recent years聽Ask us聽for more聽details聽on how smart thermostats can make your聽house聽better聽while helping save on聽energy聽expenses聽year-round.
