Copyright 2004 Bryant Heating & Cooling Systems Printed in U.S.A. CATALOG NO. 5353-000
Every thermostat is calibrated before it leaves the factory. Un-
der normal circumstances there will never be a need to recali-
brate the thermostat again. To accommodate s
pecial needs
,
the thermostat may be recalibrated following these steps:
1. While holding the Mode button in, press the fan button
for 5 seconds. After all the icons in the display appear,
release the buttons.
2. Press the Up and Down arrow buttons simultaneously,
twice.
3. Press the up or down buttons until the flashing number
equals the current room temperature.
4. Press the Mode button to return to normal operation.
Sample Wiring Diagrams HEAT PUMP
Sample Wiring Diagrams HEAT-COOL/
COOLING ONLY
STEP #3 TEST OPERATION
A. Turn the power on to the HVAC (heating, ventilation,
and air conditioning) system.
B. Press the
MODE
button until the HEAT icon appears
on the display. Press the Up or Down buttons until the
set temperature is 10 degrees above room tempera-
ture. The unit should turn on and supply heat.
C. Press the
MODE
button until the COOL icon appears
on the display. Press the Up or Down buttons until the
set temperature is 10 degrees below room tempera-
ture. The unit should turn on.
NOTE: Most equipment has a time delay between cy-
cles. This feature is defeatable on the thermostat.
Consult the Owner's Manual under Setup: Cycles per
hour.
D. Press the
MODE
button repeatedly until OFF is dis-
played on the thermostat.
TROUBLESHOOTING
SYMPTOM CAUSE REMEDY
When not using a com-
mon wire the air condi-
tioning equipment tries
repeatedly to turn on,
but cannot. At times
the display dims or dis-
appears.
There is not enough power
available to “power share”.
Connect a 270 ohm,
10 watt power resistor at
the unit as shown below.
For Problem A/C
For Problem Heat
The air conditioning
does not attempt to
turn on.
The compressor timer lock-
out may prevent the air
conditioner from turning
on, for a period of time.
Consult the Owner’s
Manual in the Setup sec-
tion to defeat the cycles
per hour and compressor
timeguard.
The display is blank. Lack of proper power. Make sure power is
turned on to the HVAC
unit and there is 24 vac
between Rand H2.
If the HVAC unit is cool-
ing only, check there is
24 vac between Rand C.
The air conditioning
does not attempt to
turn on.
The cooling set point is set
too high.
Press the down arrow
until the cooling set point
is 10 degrees lower than
the room temperature.
The heating does not
attempttoturnon.
The heating set point is set
too low.
Press the up arrow until
the heating set point is
10 degrees higher than
the room temperature.
The strip heater turns
off well before reaching
set point.
Heat pump is incorrectly
selected “on”inthe
Advanced Setup.
Select heat pump “off”
during Advanced Setup
programming. Consult
the Owner’s Manual.
CALIBRATION
RH2 Y C
TR300-10w
RH2 Y C
TR300-10w
RS
RS+V
RS-GND
3 conductor 18 gage
unshielded cable from
the thermostat to the
remote sensor.
Y
G1
R
C
H1
CK1
CK2
O
G2
RS+5
RS
RS GND
H2
8 Conductor 18 gage
unshielded cable from the
thermostat to the equipment.
COMMON
POWER
LO FAN
COMPRESSOR
REVERSING
VALVE
AUX HEAT
HIGH FAN
OH2 G1 R CY
G2
H1
DEFROST
RS
RS+V
RS-GND
3 conductor 18 gage
unshielded cable from
the thermostat to the
remote sensor.
8 Conductor 18 gage
unshielded cable from the
thermostat to the equipment.
COMMON
24vPOWER
LO FAN
COMPRESSOR
AUX HEAT
HIGH FAN
OH2 G1 R CY
G2
Y
G1
R
C
H1
CK1
CK2
O
G2
RS+5
RS
RS GND
H2
NOTE: For cooling only, the H2 connection is not required.
