Bryant 330JAV User Manual

Page 7

flashing, or a code composed of 2 digits. (The first digit is the
number of short flashes, the second is the number of longs flashes.)
Refer to service label on blower compartment door for code
explanations and useful troubleshooting suggestions. (See Fig. 12.)

It is important to note that power to furnace must not be interrupted
and furnace blower door must not be removed until the LED status
code(s) is recorded. When power to control is interrupted, status
memory is erased.

The control will store up to 5 previous codes but will not store
non-current codes longer than 48 hr. To retrieve previous codes, if
present, no thermostat inputs to control must be present and all
time delays must expire. Remove 1 of the red main limit wires 1
to 4 sec until the LED light goes out, then reconnect it. (See Fig.
5 and 6.) (Do not leave red wire disconnected for longer than 4 sec
as control will assume an overtemperature condition exists and
will respond with indoor blower operation.) This places control in
status recall mode and displays first code stored in memory.
Record code and repeat the disconnect and reconnect of red wire,
recording each code until code 11 is displayed indicating no
additional faults. After last code is displayed or after 2 minutes in
the code recall mode, the control will return to normal standby
mode.

Use any recorded fault codes, service label, and troubleshooting
diagram on following pages to diagnose and correct any problem
condition.

WIRING DIAGRAMS

Refer to Fig. 9, 10, and 11 for appropriate wiring diagrams.

TROUBLESHOOTING

Refer to service label. (See Fig. 12.) The Troubleshooting Guide
can be a useful tool in isolating furnace operation problems.
Beginning with the word “Start,” answer each question and follow
the appropriate arrow to the next item.

The Guide will help you identify the problem or failed component.
After replacing any component, verify correct operation sequence.
More information is available in a seperate Troubleshooting Guide
for 2-stage Gas-Fired Induced-Combustion Furnaces.

Fig. 10—Heating and Cooling Application Wiring Diagram

for 2-Stage Thermostats and/or 2-Speed Condensing Units

A99072

115-V FUSED

DISCONNECT

SWITCH

(WHEN REQUIRED)

JUNCTION
BOX

CONTROL

BOX

24-V

TERMINAL

BLOCK

THREE-WIRE

HEATING-

ONLY

SEVEN

WIRE

2-STAGE THERMOSTAT TERMINALS

FIELD-SUPPLIED

FUSED DISCONNECT

2-SPEED
CONDENSING
UNIT

FURNACE

GND

FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING

208/230- OR
460-V
THREE
PHASE

208/230-V
SINGLE
PHASE

WHT

BLK

WHT

BLK

COM

W/W1

Y/Y2

NOTES:

1. Connect Y-terminal as shown for proper operation.

2. Some thermostats require a "C" terminal connection as shown.

3. If any of the original wire, as supplied, must be replaced,
use same type or equivalent wire.

—7—

This manual is related to the following products:

331JAV