Honeywell Home T3 - Troubleshooting and Ordering; Troubleshooting T3 and T3 M; Troubleshooting T3 R; Ordering Specifications

T3PROGRAMMABLETHERMOSTAT
TROUBLESHOOTING– T3andT3Monly
ProblemDisplay Possible Cause Remedy
Thermostatdisplayisblank Batteriesexhausted,installed
incorrectlyortabhasn'tbeen
removed
Unclipthermostatfromwallandcheck
batteryinstallation‐ replacebatteriesif
necessary
Display shows
(onlyforT3)
Batterypowercriticallylow Unclipthermostatfromwallandreplace
batteriesimmediately
Display shows Faultytemperaturesensor Replacethermostatorcheckwiringto
remotetemperaturesensoriffitted
Thermostatshoesheat
demandbutboilerdoesn’t
respond
a.Boiler wateralreadyat
temperature
b.Faultywiringconnection
a.Normalbehaviour– waitforwater
temperatureto drop
b. Checkwiringatthermostatandboiler
terminals
TROUBLESHOOTING– T3R
ProblemDisplay Possible Cause Remedy
Thermostatdisplayisblank Batteriesexhausted,installed
incorrectlyortabhasn'tbeen
removed
Pullthermostatfromwallbracketor
tablestandandcheckbatteryinstallation
‐ replacebatteriesifnecessary
Display shows Batterypowercriticallylow Pullthermostatfromwallbracketor
tablestandandcheckbatteryinstallation
‐ replacebatteriesifnecessary
Display shows Faultytemperaturesensor Replacethermostatorcheckwiringto
remotetemperaturesensoriffitted
Thermostatshoesheat
demandbutboilerdoesn’t
respond
a.Boiler wateralreadyat
temperature
b.Faultywiringconnection
a.Normalbehaviour– waitforwater
temperatureto drop
b. Checkwiringatthermostatandboiler
terminals
Thermostatdisplaysshows
andReceiverBox
LEDisflashingRED
Wirelesscommunicationwith
ReceiverBoxislost
Movethermostattoalocationwhere
wirelesscommunicationisreliable
Thermostatdisplaysshows
andReceiverBox
LEDisflashingOFF
ThermostatandReceiverBox
notbound
Movethermostattoalocationwhere
wirelesscommunicationisreliable
ReceiverBoxLEDisflashing
ORANGE
ReceiverBoxisinbindmode Waitforbindmodetotimeout(3min)or
bindaThermostat
ORDERINGSPECIFICATION
Description Model EANcode Literature
T3WiredThermostat T3H110A0081 5025121380515
Allpackagingcontainsa
userguideand
installationguidein
English,Polish,Czech,
Hungarian,Slovakian,
Romanian,Bulgarian,
Ukrainian&Turkish
T3WiredThermostatfor
OpenTherm Boilers
T3H310A0045 5025121380492
T3Wireless Thermostat Y3H710RF0072 5025121380508
SpareReceiverBox R3H710RF0005 5025121380362
SpareWireless Thermostat T3H700RF0091 5025121380386