Bryant ZONE PERFECT TWO-ZONE Installation Instructions Manual page 10

Red LED—Displays ON when fan is energized.
I
Red LED—Displays ON when first-stage cooling is
J
energized.
Red LED—Displays ON when second-stage cooling is
K
energized.
Red LED—Displays ON when reversing valve is ener-
L
gized.
LED CODES
Green flashes 1 time every sec and no
other LEDs are flashing.
Green flashes 1 time and Red flashes 1
time
Green flashes 1 time and Red flashes 2
times
Green flashes 1 time and Red flashes 3
times
Green flashes 1 time and Red flashes 4
times
Green flashes 1 time and Red flashes 5
times
Green flashes 2 times and Red flashes 1
time
Green flashes 2 times and Red flashes 2
times
Green flashes 2 times and Red flashes 3
times
Green flashes 2 times and Red flashes 4
times
Green flashes 2 times and Red flashes 5
times
Green flashes 3 times and Red flashes 1
time
Green flashes 3 times and Red flashes 2
times
Green flashes 3 times and Red flashes 3
times
Green flashes 3 times and Red flashes 4
times
M
N
O
→ TABLE 2—TROUBLESHOOTING
ERROR DESCRIPTION
Normal operation.
Duct temperature sensor. First-stage heat
limit exceeded; heat will be locked out.
Duct temperature sensor. Second-stage
heat limit exceeded.
Duct temperature sensor. First-stage cool
limit exceeded; cool will be locked out.
Duct temperature sensor. Second-stage
cool limit exceeded.
HP temperature sensor. First-stage heat
limit exceeded; heat will be locked out.
HP temperature sensor error. Second-
stage heat limit exceeded.
HP temperature sensor. First-stage cool
limit exceeded; cool will be locked out.
HP temperature sensor. Second-stage cool
limit exceeded.
1. Duct temperature sensor.
2. Temperature sensor is shorted.
1. Duct temperature sensor.
2. Temperature sensor is open.
1. HP temperature sensor.
2. Temperature sensor is shorted.
1. HP temperature sensor.
2. Temperature sensor is open.
Damper fuse blown.
Fatal control center circuit board failure.
—10—
Red LED—Displays ON when first-stage heat is
energized.
Red LED—Displays ON when second-stage heat
is energized.
J2 (Not Shown)—Cut for 50 hz operation. Lo-
cated under plastic housing approximately 1 in.
above comprotec override.
ACTION REQUIRED
None.
Wait until duct temperature cools below
exceeded temperature trip. (Heat leaving
air temperature trip limits set at LAT limits
POT on central control circuit board; range
is 110° to 175°F.)
Wait until duct temperature cools below
exceeded temperature trip. Range is 105°
to 155°F.
Wait until duct temperature raises above
exceeded temperature trip (45°F).
Wait until duct temperature raises above
exceeded temperature trip (50°F).
Wait until HP temperature cools below ex-
ceeded temperature trip. Fixed at 110°F.
Wait until HP temperature cools below ex-
ceeded temperature trip. Fixed at 105°F.
Wait until duct temperature raises above
exceeded temperature trip (45°F).
Wait until duct temperature raises above
exceeded temperature trip (50°F).
1. Verify that duct temperature sensor or
10k ohm resistor is attached to control cen-
ter at duct temperature connectors.
2. Replace duct temperature sensor.
1. Verify that duct temperature sensor or
10k ohm resistor is attached to control cen-
ter at duct temperature connectors.
2. Replace duct temperature sensor.
1. Verify that HP temperature sensor or
10k ohm resistor is attached to control cen-
ter at HP temperature connectors.
2. Replace HP temperature sensor.
1. Verify that HP temperature sensor or
10k ohm resistor is attached to control cen-
ter at HP temperature connectors.
2. Replace HP temperature sensor.
1. Check for short circuits on damper wire
connections at the dampers and control
center.
2. Replace damper fuse.
3. Check damper operation, may need to
be replaced.
Replace control center.