Page 120
LAARS Heating Systems
Condition
Information
Corrective Action
122
3563
7139
140
2463
4937
158
1739
3489
176
1253
2514
194
919
1845
212
685
1376
Inlet Sensor
•
Inlet sensor is damaged or not
connected.
•
Manual-reset condition
•
Annunciation – on Navigation Bar
•
Check the sensor and wiring.
Repair or replace as needed.
•
Measure the resistance of the
sensor and compare to the
resistance table below. Replace
if necessary.
Temp
(°F)
Temp
(°C)
Resistance
(Ω)
68
20
12555
86
30
8025
104
40
5279
122
50
3563
140
60
2463
158
70
1739
176
80
1253
194
90
919
212
100
685
Burner
Parasitic
Flame
•
Sensing flame on burner prior to
ignition.
•
Manual-reset Condition
•
Annunciation – on Navigation Bar
•
Inspect flame and wiring for
damage and continuity. Replace
if necessary.
Burner Max
Trials
•
The maximum attempts for ignition
has occurred, without sensing
flame.
•
Manual-reset Condition
•
Annunciation – on Navigation Bar
•
Verify supply and manifold gas
pressures satisfy installation
requirements.
•
Verify the proper intake and
venting.
•
Inspect the burner.
•
Check pilot and main valve
wiring and operation.
•
Check ignition transformer
electrode, flame detector wiring
and position.
Additional
High Limit
•
Outlet water temperature has
exceeded the additional high limit
setting
•
Auto-reset Condition
•
Annunciation – “Warning Additional
high limit” on Message Screen
•
Verify the system is full of water
and all air has been purged from
the system.
•
Verify the boiler/heater is piped
properly into the heating system.
•
Check for proper pump
operations.
•
Check the additional high limit
set point.
Lockout: Inlet Probe
Lockout: Burner Parasitic Flame
Lockout: Burner Max Trials
Error Codes (continued)
