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TROUBLESHOOTING
SYMPTOM
When not using a com-
There is not enough
mon wire the air condi-
power available to
tioning equipment tries
"power share."
repeatedly to turn on,
but cannot. At times
the display dims or
disappears.
The air conditioning
The compressor timer
does not attempt to turn
lockout may prevent the
on.
air conditioner from turn-
ing on, for a period of
time.
The display is blank.
Lack of proper power.
The air conditioning
The cooling set point is
does not attempt to turn
set too high.
on.
The heating does not
The heating set point is
attempt to turn on.
set too low.
The strip heater turns off
Heat pump is incorrectly
well before reaching set
selected "on" in the
point.
Advanced Setup.
Copyright 2005 Bryant Heating & Cooling Systems
CAUSE
REMEDY
Connect a 270 ohm,
10 watt power resistor at
the unit as shown
below.
For Problem A/C
R
H2
Y
TR300-10w
For Problem Heat
R H2
Y
TR300-10w
See the Advanced
Setup section to defeat
the cycles per hour and
compressor timeguard.
Check for 24 vac
between R and C.
Press the down arrow
until the cooling set point
is 10 degrees lower than
the room temperature.
Press the up arrow until
the heating set point is
10 degrees higher than
the room temperature.
Select heat pump "off"
during Advanced Setup
programming. See
the Advanced Setup
section.
CALIBRATION
CALIBRATION: Every thermostat is calibrated before it
leaves the factory. Under normal circumstances there will
never be a need to recalibrate the thermostat. To accommo-
date s pecial needs , the thermostat may be recalibrated fol-
lowing these steps:
1. While holding the Mode button in, press the down
C
button for 5 seconds. After all the icons in the display
appear, release the buttons.
2. Press the Mode button.
3. Press the up or down buttons until the flashing num-
ber equals the current room temperature.
C
4. Press the Mode button to return to normal operation.
Printed in U.S.A.
CATALOG NO. 02-DFBIIK534
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