Bryant HRVBBLHU Installation, Start-Up, And Operating Instructions Manual page 17

TABLE 13—BACK MODE
MODES
OFF
1
2
3
TYPE 2—COMMUNICATION PROBLEM OR UNSUP-
PORTED MODE (AUTO MODEL ONLY)
All indicators flashing at a rate of about once every 8 sec.
Communication is not properly entered or is not working.
A. Case 1
User changes the mode on wall control and HRV does not respond
to command (OFF, LOW, or HIGH speed). Check all wires to wall
control particularly red wire (See Table 14).
CONTROL MODULE
Terminal Block No.
J3-9
J3-8
J3-7
J3-6
B. Case 2
User changes the mode but, HRV does not respond. All indicators
flash at a rate of about once every 8 sec. Check all wires to wall
control particularly green wire. If problem still exists, test wall
control with 5 ft of wire from HRV. If this works, change wall
control module inside HRV.
C. Reset
To reset HRV, proceed as follows:
1. Unplug HRV from 115vac.
2. Wait 15 sec.
3. Plug HRV into 115vac.
WALL CONTROL
BACKUP MODE
OFF
INTERMITTENT
LOW-SPEED EXCHANGE
HIGH-SPEED EXCHANGE
TABLE 14—SYSTEM WIRING COLORS AND CONNECTIONS
Terminal Block
Identification
B
G
R
Y
WALL CONTROL
WIRE
Color Terminal No.
Black
Green
Red
Yellow
—17—
WALL CONTROL
Terminal Identification
J1-4 B
J1-3 G
J1-2 R
J1-4 Y