Service Indicator; Thermostat Reset - Lennox ComfortSense 3000 Series Operation Manual

Service Indicator

When abnormal equipment operation is detected, the
SERVICE indicator will flash on the screen (see figure 16).
This indicates that the equipment requires service from a
qualified service technician.
MO TU WE TH FR SA SU
10:14
AM
PM
PROG A B C D
ROOM
79
°
Figure 16. Service Indicator Flashing

Thermostat RESET

Under some abnormal conditions, it may be necessary to
"reset" the thermostat to its default condition. Such a
RESET would delete all programming and settings and
therefore should only be used on rare occasions when the
the thermostat fails to function as designed and/or as
507518-02
FILTER
SERVICE
FAN
ON
AUTO
HOLD
SYSTEM
COOL
UC
OFF
HEAT
programmed. Such an instance can occur as a result of a
power surge or similar electrical disturbance (e.g. after an
electrical storm or power outage). The RESET button can
be used to recover from this situation.
10:36
MO
AM
FAN
PM
HOLD
AUTO
SYSTEM
ROOM
72
COOL
°
UC
Figure 17. Reset Button
When the RESET button is pressed, ALL settings revert
back to the their defaults (see tables 3 on page 13.
The RESET button is an unlabeled, recessed button located
behind the door, on the right-hand side of the thermostat,
Page 12
Heat Cool
Prog Day/Time
Fan Hold
Settings Enter
CAUTION
(DOOR
OPEN)