Service Reminders; Unit Part And Serial Numbers; Memory Protection - Lennox ComfortSense 7000 Series Programming And Application Manual

Service Reminders

The user may turn on and turn off the following service re-
minders (all of which default to OFF) in either chronological
time and/or run time and may be reset (to default) or
delayed (snooze) at any time:
Replace Media Filter
Routine Sys (System) Check−up
Replace Hum (Humidifier) Pad
Replace UV Lamp
PureAirt Maintenance
NOTE − When chronological time is selected, the timer
runs based on the calendar. When time is selected in run
time, the timer runs based on the time the specific output is
ON (e.g. Fan output for Media Filter).
When the reminder time (either calendar time or run time)
has elapsed, the system displays a screen from which the
user can either RESET or DELAY the reminder.
The user can reset the timer either before it has expired
(i.e. reminder is set to 6 months and user decides to reset it
to 6 months or change it to different value at the end of 4th
month) or when the time has expired and a reminder mes-
sage has been displayed.
When a reminder is turned off, the indicator will not be acti-
vated even if the timer is expired. Note that setting filter re-
minder to 0 (OFF) will not reset the timers, but will deacti-
vate the filter indicator.
In the case of a power interruption:
S
lithium battery has charge the total accumulated
time is maintained (i.e. the counter does not recycle to
zero).
S
lithium battery has NO charge the due date of re-
minders is maintained.
Unit Part (Catalog) & Serial Numbers
A label on the back of the thermostat is visible through an
opening in the back of baseplate. This identifies the Len-
nox Catalog Number, Part Number and Serial Number.
Separate the baseplate from the thermostat to see addi-
tional manufacturing information.

Memory Protection

The thermostat stores all the information concerning its
programming (state, mode, program information, last tem-
perature measured) in a nonvolatile memory.
This function avoids the loss of the state of the thermostat
when a power−down occurs. The only thing that might be
lost is the clock, however, a lithium battery will remember
clock information for as long as it has charge (approxi-
mately 30 days). When power down occurs (due to a pow-
er outage) the thermostat is able to switch off all relays.
The O and B relay will maintain their last state.
Page 21 ComfortSenset Touch Screen Thermostat