Dip Switch Setting - Lennox VOSB Series Installation Instructions Manual

Error code Error Content
E0 Mode conflict
E1
Communication error between indoor and main outdoor unit
E2 T0 (Inlet air temperature sensor) malfunction
E3
T2 (Middle of evaporator sensor) malfunction
E4 T2B (Outlet of evaporator sensor) malfunction
T2A (Inlet of evaporator sensor) malfunction
E5
E6 DC fan motor error
EEPROM failure
E7
EC TA ( temperature sensor) malfunction
Outlet air
To wired
controller
comm. bus
To wired
controller
power
To outdoor/
indoor/MS
units
comm. bus
CO2
sensor
Display Board
T2B
XS4 XP4
T1/T0
XS3 XP3
T2
XS2 XP2
T2A
XS1 XP1
TA
EEV
NOTE:
Component in dash line is optional or field wiring
Typical wiring diagram. Refer to wiring diagram on the unit for actual wiring.
Figure 19. VOSB072H4­3 and VOSB096H4­3 Typical Wiring Diagram
Dip­switch setting:
See Table 6 for allowed indoor to outdoor unit combinations.
Use the SW8-1 dip switch to set whether or not the all of the indoor units in the system are VOSB units or if there is a
mix of indoor units in the system.
0 - All indoor units in the system are VOSB.
1 - VOSB and common indoor units mix in one system.
Table 6. VOSB Indoor Unit to Outdoor Unit Allowed Connection Ratio
Outdoor Unit
Heat Pump
Heat Pump
Heat Recovery
Heat Recovery
Error code
MS self-inspection error
U4
F8 MS error
Eb EEV malfunction
Ed Outdoor unit fault
EE High water alarm
FE No address
A0 Emergency stop
Remote off
D8
NOTE:
1. Refer to manual for communication wiring
2. Please use the 2-conductor shielded twisted
cable for communication
WHITE
BLUE
RED
CS
BLACK
YELLOW
GRAY
XT2
Vco2
COM
CN14 CN12 CN11 CN5
XS5 XP5
RED
WHITE GND
Vco2
B A L C K
L B E U
L B ACK
CN30
CN2{L_IN}
EARTH
CN4{N_IN}
N=4
L1 L2
XT1
POWER IN
Indoor Unit
VOSB Only
VOSB + other indoor units ≤100%
VOSB Only
VOSB + other indoor units ≤100%
Error Content
Code
FM Indoor fan motor
T0
Inlet air temperature sensor
T2A
Inlet of evaporator sensor
T2B
Outlet of evaporator sensor
T2
Middle of evaporator sensor
TA
Outlet air temperature sensor
XP1-6 Connectors
ON/OFF
SWITCH
CN50
DC motor
drive board
FAN CTON HTON 4 5 6
HHE interface
( Current range: 0-1A)
( Voltage range: 0-24V AC/DC)
N=3
" +5V GND +12V "
ONLY USED
FOR TESTING
N=3
CN52 CN54
CN27 CN24
Main Board
CN57+
CN3 CN28 CN18 CN20
ALARM
PUMP1 PUMP2
IDU/ODU
Connection Ratio
≤100%
NOT ALLOWED
18
Title Code
XS1-6 Connectors
XT1-2
Terminals
PUMP Pump motor
CS
Water level switch
Warning lamp
ALARM
Electronic expansion valve
EEV
SVD Solenoid valve
DC motor
drive board
CN13
CN13
Lorem ipsum
FAN
FM
Rectifier Bridge
-
~
+
~
RED
BLACK
CN58-
BLUE
BLUE
XS6 XP6
CN29
SVD
VOSB/ODU
Connection Ratio
≤100%
≤30%
NOT ALLOWED
≤30%
Title
FAN
FM