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Honeywell L7224U1002 Guide d'installation Page 8

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L7224U OIL AND ELECTRIC BOILER ELECTRONIC AQUASTAT
®
CONTROLLER
69-1720EFS—07 8
TROUBLESHOOTING
When attempting to diagnose system performance,
reference to the LED display can help to identify specific
areas not working properly. The LED display will scroll
Err, followed by a digit (1-8). Refer to Table 9 for a
description of each error and suggested actions and Table
10 for a troubleshooting guide.
Fig. 8. L7224U single zone connections.
Fig. 9. L7224U single heat zone with indirect water
tank and circulators. Optional outdoor reset module.
C1
B1
ZC
L2
LINE
C2
ZR
L1
B2
T
T3
2
1
M32022B
L1
(HOT)
SENSOR
LINE
VOLTAGE
CIRCULATOR
LINE
VOLTAGE
OIL BURNER
RELAY
L2
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR.
W8735S1000 WIRED OUTDOOR RESET MODULE SHOWN.
1
1 2 3 OT OT
C7089U1006
OUTDOOR
SENSOR
1
W8735Y1000 OR
W8735S1000
C1
B1
ZC
L2
LINE
C2
ZR
L1
B2
T
T3
2
1
M34962
L1
(HOT)
SENSOR
LINE
VOLTAGE
CIRCULATOR
LINE
VOLTAGE
OIL BURNER
RELAY
L2
OPTIONAL OUTDOOR RESET MODULE AND OUTDOOR SENSOR. W8735S1000 WIRED
OUTDOOR RESET MODULE SHOWN.
1
1 2 3 OT OT
C7089U
OUTDOOR
SENSOR
1
W8735Y1000 OR
W8735S1000
INDIRECT
TANK CIRCULATOR
LINE VOLTAGE INDIRECT
TANK AQUASTAT
L1
(HOT)
L2
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