Honeywell Y87RFC User Manual

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.
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.
Getting to know your display
Set Temperature Indicator
Means the figure on the screen is your set temperature,
rather than your current room temperature.
Heating on
Means there is a requirement for some heating, so
your boiler should either be on or cycling on/off.
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.
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.
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.
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.
EN | User Guide
32300942-012 B