Honeywell Home T87RF User Manual

50094158-014 B
2. After five seconds the current
room temperature will be
displayed once again. The
thermostat will then try to
maintain your set temperature
as accurately as possible.
You can check your set
temperature by turning the
dial one ‘click’ to the left or
right. The set temperature will
flash up for a few seconds,
before returning to display
the room temperature again.
Setting your room temperature
1. Your current room temperature
is shown in the display. To
set the temperature you
want, just turn the dial right to
increase and left to decrease.
Each ‘click’ as the dial turns
represents a 0.5°C change.
Replacing the
batteries
The batteries should be replaced
when the symbol is displayed.
Remove the dial (1) and separate
the thermostat (2) from the
mounting plate (3). Replace the
discharged batteries with two new
AA alkaline batteries, then reattach
the thermostat to the mounting
plate and replace the dial.
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EN | User Guide
Night-time temperature reduction
Overnight, or if you are out, it is best to set the thermostat to
a lower temperature, as it will save you energy. In general a
reduction of 5°C is recommended, but this will depend on your
heating system and the amount of insulation in your home.
T87RF/Y87RF Single Zone Thermostat
Getting to know your display
Troubleshooting
Low batteries
If you see this battery icon then you need
to replace the batteries right away.
No power to the thermostat
If the thermostat screen is blank after initial installation,
then check the protective tab has been removed from
the batteries. Otherwise, try replacing the batteries.
RF communication error
If these icons are flashing, then there may be an issue
with the signal from the Boiler Relay. First check there is
mains power to the Boiler Relay. If this does not resolve
the problem, consult your installer.
Defective thermostat
If this icon is displayed then the thermostat is no
longer functioning and will need to be replaced.
Set Temperature Indicator
Means the figure on the screen is your set temperature,
rather than your current room temperature.
Boiler Relay Connection
Means your thermostat is successfully
connected to your Boiler Relay.
Internet Gateway Connection (optional)
Means your thermostat is successfully
connected to your Internet Gateway.
Heating on
Means there is a requirement for some heating, so
your boiler should either be on or cycling on/off.

Honeywell Home T87RF Specifications

General

Power Source	Battery
Display	Digital
Programming	7-Day Programmable
Control Mode	Heating and Cooling
Programmable	Yes
Display Features	Backlit
Wireless	Yes
Remote Sensor Capable	Yes
Weight	0.5 lbs
Compatibility	Heating and Cooling Systems
Battery Type	AA
Temperature Range	40°F to 90°F

Summary

Setting Your Room Temperature

Set Current Room Temperature

Instructions on how to view and adjust the current room temperature using the thermostat dial.

Thermostat Maintains Set Temperature

Explains how the thermostat works to maintain the set temperature after adjustment.

Night-Time Temperature Reduction

Replacing the Batteries

Understanding Your Display

Set Temperature Indicator

Explains the indicator for the set temperature versus the current room temperature.

Heating On Indicator

Describes the icon indicating that the heating system is active or cycling.

Boiler Relay Connection Status

Confirms the thermostat's successful connection to the Boiler Relay.

Internet Gateway Connection Status

Indicates the thermostat's connection status to an optional Internet Gateway.

Troubleshooting

Low Batteries Troubleshooting

Alerts to the need for battery replacement when the low battery icon is displayed.

No Power Troubleshooting

Troubleshooting steps for a blank thermostat screen, including checking the battery tab.

RF Communication Error

Addresses issues with the signal between the thermostat and Boiler Relay.

Defective Thermostat

Indicates when the thermostat is no longer functioning and requires replacement.

Binding Thermostat to Internet Gateway

Activate Binding Screen

How to initiate the binding process by holding a touch zone on the thermostat.

Send Binding Signal

Steps to send the binding signal and indications of successful binding.

Confirm Successful Binding

Visual cues on the Gateway and thermostat to confirm a successful binding.

Signal Strength Display

How signal strength is displayed on the thermostat after binding.

Gateway Instructions Reference

Reference to Gateway instructions for account creation and app download.