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3. To turn the system off, move the
SYSTEM
switch to the
OFF
position and the
FAN
switch to
the
AUTO
position.
Filter Review
1. Move the
SYSTEM
switch to the
EMH,
HEAT,
or
COOL
position, then press and hold the
▲
and
▼ buttons at the same time for 5 seconds to enter the filter review mode. (Note – When
“SERVICE FILTER” message is displayed and after filter has been cleaned or replaced, this
same process is used to clear “SERVICE FILTER” message.)
2. The number of days left until filter cleaning or replacement will be displayed.
3. Press either the
▲ or ▼ button one time to exit the filter review mode. If no buttons are
pressed within 15 seconds, the thermostat will exit to normal operation.
4. In filter review mode, press and hold the
▲ and ▼ buttons at the same time to reset the
amount of time until the next filter service. The display will flash
“dEF” to indicate that reset
has been completed, unless FL has been deactivated, selection 00. (See
“Configuration
Menu Chart
”)
TROUBLESHOOTING
If a voltage spike or static discharge blanks out the display or causes erratic thermostat
operation:
1. You can reset the thermostat by pressing the reset button. (See Figure 2)
2. Remove power (and batteries, if installed) until display goes blank. Then restore power (and
reinstall batteries).
3. If the thermostat has power, has been reset, and still does not function correctly, contact a
qualified HVAC contractor.
