Controlling The Heat/Cool Modes Of Operation - Lennox ComfortSense 7000 Series Programming And Application Manual

Controlling Heat/Cool Modes of Operation
On initial power up or after an a power loss
over 2 hours, the thermostat powers up at
the HOME screen in the AUTO position. If it
powers up after a power loss of less than 2
hours, it assumes the last mode set.
Pressing MODE repeatedly scrolls through
all the modes AUTO, EM HEAT, COOL,
HEAT, then back to OFF.
HEAT, COOL and OFF modes are as each name implies.
AUTO (autochangeover) allows the thermostat to switch
between Heating and Cooling, whichever mode is dictated
by the indoor temperature.
EM HEAT (emergency heat) bypasses the first stage of
heating (any stage[s] of heat pump heating) and goes
directly to the heat stage used for maximum heating to
more quickly warm a very cold house.
When the indoor temperature decreases or increases, the
HEATING or COOLING cycle will turn on based on the dis-
played mode. When the HVAC system is on, the INFOR-
MATION DISPLAY AREA (shown in figure 3) will display
one or several operational messages (listed in table 1). If
Faults, Errors, and Service Information
TEMP SENSOR ERROR, MEMORY ERROR
CALL FOR SERVICE
NO OUTDOOR SENSOR
CALL DEALER INFO
REPLACE: MEDIA FILTER; UV LAMP; HUM PAD; METAL INSERT
REMIND RESET
ROUTINE SYS CHECK−UP
REMIND RESET
NO OUTDOOR SENSOR, HUM SENSOR ERROR, HVAC ERROR DETECTED
REMIND SERVICE
DEALER INFORMATION
(Edited to show dealer contact information [2 lines])
Operating Information
SET DATE/TIME
Default DATE/TIME (MON JAN 1 12:00 PM)
HEATING, COOLING, HUMIDIFYING, DEHUMIDIFYING, SYSTEM OFF,
OUTDOOR TEMP xxF, INDOOR RH xx%,
MON SEP 24 3:OO PM
SCHEDULE ON, SCHEDULE OFF, WAIT, FAN ON, FAN CIRC
MON SEP 24 3:OO PM
HOLD SETTING UNTIL
MON SEP 24 3:OO PM
PRESS SCHED TO
RESUME PROGRAM
506230−01 05/09
the outdoor sensor is connected and is turned on in user
settings, outdoor temperature will be included in the dis-
plays. The table below summarizes the information mes-
sages.
When the faults, errors, and service information displays
appear, dynamic keys will appear under the second line
entries, REMIND, CLEAR, SERVICE, or RESET. Press
the box to perform the action.
Table 1. Information Display Area
Page 4
INFORMATION DISPLAY AREA
Figure 3. Home Screen
Top line: fault/error
Bottom line: action
Top line: fault/error
Bottom line: action
Top line: serv. req'd
Bottom line: action
Top line: serv. req'd
Bottom line: action
Top line: fault/error
Bottom line: action
Contact
Installing Dealer
[First time start up msg]
Top line: operation msgs
Bottom line: date & time
Top line: operation msgs
Bottom line: date & time
[Alternating msgs during a held schedule]