Troubleshooting Tips - Honeywell T6812DP08 Operating Manual

Wiring & Thermostat installation
I. Place Back cover over junction box, insert and make
the mounting screws tightly.
II. Connect the wiring by order and make the mounting
screws tightly.
III. Align the top of thermostat with back cover and push
down on the back cover.
IV. Screw down the mounting screws on bottom of
thermostat.
Caution: Power module or thermostat can only be
replaced by manufacturer or authorized staff.
Switch off power before installation, repair!
APH07CH04 - R2000EN

Troubleshooting Tips

If... Then...
♦ Set the mode to Heat by pressing the
Mode button.
♦ Check that the heat temperature setting
Heating system
is set above the room temperature and
does not turn on.
"Heat On" shows solidly in the display.
♦ Wait five minutes for the heating system
to respond.
♦ Set the mode to Cool by pressing the
Mode button.
♦ Check that the cool temperature setting
Cooling system
is set below the room temperature and
does not turn on.
"Cool On" shows solidly in the display.
♦ Wait five minutes for the cooling system
to respond.
♦ Check whether the Fan mode is set to
The fan doesn't Auto
work. ♦ Check whether the heating or cooling
system works.
♦ Check whether the keypad is locked or
The Up or Down not.
button doesn't ♦ Check whether the system is working in
work. Energy saving mode.
♦ Check whether the thermostat is off.
Dimension
86
3