Owner's Manual
11
ENGLISH
Operation Manual
BATTERY OPERATION
The thermostat is powered by 24VAC. Batteries are not required for proper operation, but with two "AAA" batteries
installed, your thermostat will maintain time and continuously display the temperature during a loss of power.
CHECK THERMOSTAT OPERATlON
If at any time during testing your system does not operate properly, contact a qualified service person.
Turn on power to the system
• FAN OPERATION
Move the system switch to the
OFF
position. If your system does not have a "G" (Fan) terminal connection, skip
to the Heating System.
1. Move the fan switch to the
ON
position. The blower should begin to operate.
2. Move the fan switch to the
AUTO
- position. The blower should stop immediately.
• COOLING SYSTEM
1. Move SYSTEM switch to
COOL
position.
2. Press
▼
to adjust thermostat setting below room temperature. The blower should come on immediately, fol-
lowed by cold air circulation. lf the
COOL ON
display is flashing, the 1
st
stage compressor is at off-time cycle
protection
3. Both stages of cooling system will begin to operate when the set point is 3°F (2°C) below ambient
AUX +2
dis-
play will be display. If
+2
display is flashing, the second stage will delay 15 minutes before starting
(Note: See Configuration menu item 1)
4. Press
▲
to adjust temperature setting above room temperature. The cooling system should stop operating.
lf all functions operate properly, the thermostat is lnltnlled correctly.
• REPLACING BATTERIES
lf your thermostat was pre-installed, the batteries may be in place. lf the battery icon on the display is flashing, it
indicates that the batteries need to be replaced. When the thermostat is powered only by battery, the battery icon
will flash for approximately 2 months before the batteries are expected to expire.
Important:
Replace the batteries when the low buttery message flashes on the display. This will keep the themio-
stat operating properly. With two "AAA" batteries installed, your thermostat will maintain time and continuously
display the temperature during a lose of AC power.
1. Place the
COOL/OFF/HEAT
switch in the
OFF
position.
2. Put the
FAN AUTO/ON
switch ln the
AUTO
position.
3. Gently pull the cover straight off the base.
4. Install two "AAA" alkaline batteries in battery compartment. Be sure to match the positive (+) ends of the bat-
teries with the positive (+) terminals as marked in the battery compartment
5. It may take as long as 30 seconds for the low battery icon to disappear after changing batteries.
CAUTION
To prevent compressor damage, if the outdoor temperature is below 50°F (10°C),
DO NOT
operate the cooling
system.
CAUTION:
Incorrect battery installation can damage the thermostat and void the warranty.
Summary of Contents for LK-C0728A
Page 15: ...February 2016 ...
