beautypg.com

Bryant Deluxe 4-Way Multipoise Variable-Capacity Direct-Vent Condensing Gas Furnace A93040 User Manual

Page 9

background image

g. Manually close blower access panel door switch. Use a

piece of tape to hold switch closed.

WARNING:

Blower access panel door switch opens

115-v power to control center. No component operation
can occur. Caution must be taken when manually closing
this switch for service purposes. Failure to follow this
warning could result in personal injury or death.

h. After fault code 11 flashes for at least 2 times, remove R,

W, and Y jumpers.

i. Turn setup switch SW-1 to OFF position.

j. Release blower access panel door switch and replace

blower access panel.

k. Operate furnace through 1 heat cycle to check for proper

operation and check LED status.

l. If furnace is operating properly and LEDs indicate proper

operation, replace main furnace door.

3. The control can also assist in troubleshooting by performing

a Component Test. The Component Test will functionally
operate all furnace components, except the gas valve.

a. To initiate Component Test proceed with the following:

(1.) Leave 115-v power to furnace turned on.

(2.) Remove main furnace door.

(3.) Remove blower access panel.

(4.) Turn setup switch SW-6 to ON position.

(5.) Manually close blower access panel door switch.

Use a piece of tape to hold switch closed.

WARNING:

Blower access panel door switch opens

115-v power to control center. No component operation
can occur. Caution must be taken when manually closing
this switch for service purposes. Failure to follow this
warning could result in personal injury or death.

b. When items (1) through (5) above have been completed,

the following will occur:

(1.) The control center goes through a brief self test.

This self test takes approximately 2 sec to complete.
After door switch is closed, red (microprocessor)
LED briefly comes on. Then green LED comes on
for 1 sec, followed by 1 sec where both the green
and yellow LEDs are on. During this time, the
control is checking itself.

(2.) Inducer motor operates for 20 sec at low speed,

operates for 20 sec at high speed, then turns off.

(3.) Hot surface ignitor is energized for 15 sec, then

de-energized.

(4.) Main blower motor operates for 20 sec at low

speed, operates at high speed for 20 sec, then turns
off.

(5.) After component operation test is completed, 1 or

more fault codes (11, 22, 41, or 42) will flash. See
service label on back of main furnace door or Fig.
15 for explanation of codes.

NOTE:

To repeat component test, turn setup switch SW-6 to OFF

and then back to ON.

c. After component test, perform the following:

Fig. 12—Variable-Capacity Control Center

A98296

W2

COM

24V

W/W1

Y/Y2

RG

HUM

HOT SURFACE
IGNITOR CONNECTOR

EAC-ELECTRONIC AIR

CLEANER TERMINALS

(115-VAC 1 AMP MAX)

115-V
CONNECTORS

24-V THERMOSTAT
TERMINALS

PRESSURE SWITCH
CONNECTOR

HUM-HUMIDIFIER
TERMINAL
(24-VAC 0.5 AMP MAX)

TRANSFORMER

24-V CONNECTORS

3-AMP FUSE

STATUS AND DIAGNOSTIC
LED LIGHTS

AIR CONDITIONING
(A/C) SETUP SWITCH
SETUP SWITCHES
(SW) AND BLOWER
OFF DELAY SETUP
SWITCHES
MODEL PLUG

COMMUNICATION

CONNECTOR

CONTINUOUS

FAN (CF) SETUP

SWITCHES

MAIN BLOWER

CONTROL WIRE

CONNECTOR

DEHUMIDIFIER (DEHUM)
CONNECTOR

DEHUMIDIFY ENABLE (DE)
(WHEN PROVIDED)

—9—