Lennox HARMONY II, Руководство по установке, Страница: 29 / 30

Page 29
HARMONY III
T
SERIES
R
C
Y1
Y2
O
W1
R
G
W1
W2
C
DS
Figure 25
System Troubleshooting − Harmony III
t
Zone Control System Option 3 −
Lennox Heat Pump & Lennox Variable-Speed Gas Furnace (Dual Fuel)
BPS BPS PS PS
BALANCE
POINT
SENSOR
DAMPERS
85
90
100
110
120
130
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
NotUsed
OFF
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Zone4
PIAB
Zone1
PIAB
Zone2
PIAB
Zone3
PIAB
SYSTEM
Configuration
E−HEAT
Stages
Heating
Staging Temp
50
55
60
Cooling
Staging Temp
0%
20%
40%
0%
25%
50%
75%
OFF
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
OFF
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Cont. Air
Reduction
Heating Air ‘
Reduction
DF
1
2
3 HP
2COOL
2HP
GAS
1COOL
1HP
TDO
Fault
Recall
Vacation
Mode
Selector
E−Heat
Selector
1/2 AMP
DS FUSE
S
P
ARE DS FUSE
3 AMP
P
ANEL FUSE
S
P
ARE P
ANEL FUSE
Thermostat 4 Thermostat 3
W C Y G R W C Y G R
Balance
Point
Sensor
Pressure Switch
Diag4 Diag3 Diag2 Diag1
E−Heat Vacation
damper 4 damper 3 Damper 2 Damper 1 Mode Mode Fan Cooling ElectHeating Heating Status
PRESSURE
SWITCH
ESD CAUTION
TOUCH A GROUNDED METAL
OBJECT BEFORE TOUCHING
THE CIRCUIT BOARD
LENNOX
Harmony III
t
V3.0 2004
System Configuration & E−Heat jumper
settings − page 11.
piab jumper settings −
page 8.
air reduction jumper
settings − page 9.
heat/cool staging
jumper settings − page
11.
1 2 3
120
VAC
24
VAC
C R
Damper1
NC
NO
C
das
Damper2
NC
NO
C
Damper3
NC
NO
C
Damper4
NC
NO
C
Thermostat 2 Thermostat 1
W C Y G R
W C Y G R
W C Y G R
W C Y G R
Y1
Y2
O
RC
W1−Def
RH
G
W1
W2
W3
DS
Equipment
Equipment
DISCHARGE AIR SENSOR
HEAT PUMP
VARIABLE SPEED
FURNACE
-
Error code present? If so, see
troubleshooting/diagnostic
section of this manual
(Page 25).
-
Are PIAB jumpers set cor-
rectly?
-
Only 1 jumper per Zone?
(Zone Control System
Jumper Settings
(Page 8)
-
Is discharge
probe installed?
-
Is probe located
in discharge air
plenum as de-
scribed on
Page 5?
-
Is it wired cor-
rectly?
-
Does outdoor unit respond to demand?
-
Is it operating properly?
-
Test Defrost. Does outdoor unit initiate and terminate defrost correctly?
-
W1 energized during defrost?
-
Does zone control system respond appropriately during defrost?
-
Are appropriate outputs energized in response to demand?
-
Does zone control system energize appropriate outputs? During Cooling? During
Heating? During Defrost? During Emer. Heating?
-
24VAC from furnace transformer to R?
-
Does indoor unit respond to outputs? Cooling? Heating? Defrost? Emer. Heating?
-
Does blower speed change as zone demand changes? If no, does DS output
vary from 0 to 25VDC?
-
Are Reduction jumpers set
correctly? Heating Air Re-
duction must be 0%.
-
Do jumpers provide ap-
propriate speed reduction? If
no, check indoor unit before
replacing zone control
board.
-
Pressure Switch installed. in correct position?
-
Does switch open when high pressure condition is simu-
lated (temporarily blocking airflow in heating mode)?
-
Does zone control system respond appropriately when
high pressure condition is simulated (temporarily discon-
necting switch simulates high pressure).
-
Balance Point Sensor Installed and correctly wired?
-
Are thermostats wired correctly?
-
Does zone control system respond appropriately to demand?
-
Does electronic thermostat have relay switching output? If relay with
SCR output is used, not, isolation relays may need to be used.
-
24VAC supplied to each thermostat terminal R from zone control system?
-
Check each thermostat for output signal when calling. Heating output
W1? Cooling output Y1?
-
Do dampers respond to demand? 0
volts AC = open. 24 volts AC =
closed. Dampers should drive closed
when 24 volts is jumpered to damper
motor.
-
Is wiring correct & in good condition?
-
Line Voltage to transform-
er?
-
24VAC from transformer to
zone control system?
-
Are all wire connections
good? Are all wire connec-
tions correct?
-
Are jumpers set correctly
for heating and cooling?
(Page 11)
-
Fuses OK?
THERMOSTATS