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CHECK THERMOSTAT OPERATION
CONTINUED FROM FOURTH PAGE
5
1
Step Press Button(s) Displayed Press or
(Factory Default) to select:
2
OFF
4
Configuration Menu
3
CL
(OFF)
3 LO TO
3 HI
Set SYSTEM
switch to OFF
6
Move SYSTEM
switch from OFF
FA
(ON)
and
for at least 2 seconds
and
momentarily
and
momentarily
ON
0 HI
(0)
5*
OFF
and
momentarily
dL
(ON)
* Not available on earlier models
Return to normal operation
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC 50/60 Hz.
0.05 to 1.0 Amps (Load per terminal)
1.5 Amps Maximum Total Load (All terminals combined)
THERMAL DATA
Setpoint Temperature Range:
45°F to 90°F (7°C to 32°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
SPECIFICATIONS
6
Symptom Possible Cause Corrective Action
No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker.
(common problems) 2. Furnace power switch to OFF. Turn switch to ON.
3. Furnace blower compartment door or Replace door panel in proper position to engage
panel loose or not properly installed. safety interlock or door switch.
TROUBLESHOOTING
Reset Operation
If a voltage spike or static discharge blanks out the display or
causes erratic thermostat operation you can reset the thermostat
by pressing and at the same time when system is
switched from “OFF” to “HEAT” position. This also resets the
factory defaults. If the thermostat has power, has been reset and
still does not function correctly contact your heating/cooling ser-
vice person or place of purchase.
Batteries
For optimum performance, we recommend replacing batteries
once a year with fresh “AAA” Energizer
®
alkaline batteries.
7
Configuration Menu
The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal requirements.
To enter the configuration menu, with SYSTEM switch in OFF
position, hold and for at least two seconds. To exit the
configuration menu, move the SYSTEM switch from the OFF
position.
2. In the run mode, if the setpoint temperature is
manually raised
by 3°F (2°C) or more above the actual temperature with the
TEMPERATURE UP key, and the fast second stage feature is
enabled, FA on, the second stage will energize immediately.
With FA off, second stage will not energize until the setpoint
temperature is 1°F or more above actual temperature for more
than ten minutes.
3. Select Compressor Lockout CL OFF or ON – Selecting CL
ON will cause the thermostat to wait 5 minutes before turning
on the compressor if the heating and cooling system loses
power. It will also wait 5 minutes minimum between cooling and
heating cycles. This is intended to help protect the compressor
from short cycling. Some newer compressors already have a
time delay built in and do not require this feature. Your com-
pressor manufacturer can tell you if the lockout feature is
already present in their system. When the thermostat compres-
sor time delay occurs it will flash the Snowflake and Flame
Icons for about five minutes.
4. Select Temperature Display Adjustment 3 LO to 3 HI –
Allows you to adjust the room temperature display up to 3° higher
or lower. Your thermostat was accurately calibrated at the
factory but you have the option to change the display temperature
to match your previous thermostat. The current or adjusted
room temperature will be displayed on the left side of the display.
9
Displays currently programmed set temperature (this is blank
when SYSTEM switch is in the OFF position).
10
“BATT” is displayed when 2 “AAA” batteries are low and
should be replaced.
5. Select Backlit Display – (Not available on earlier models) The
display backlight improves display contrast in low lighting
conditions. Selecting backlight ON will keep the light on
continuously. Selecting Backlight OFF will keep the light off.