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Page 114
Error Codes (continued)
Condition
Inlet Sensor
Burner
Parasitic
Flame
Burner Max
Trials
Additional
High Limit
Information
Inlet sensor is damaged or not
•
connected.
•
Manual-reset condition
Annunciation – on Navigation Bar
•
Lockout: Inlet Probe
Sensing flame on burner prior to
•
ignition.
Manual-reset Condition
•
Annunciation – on Navigation Bar
•
Lockout: Burner Parasitic Flame
The maximum attempts for ignition
•
has occurred, without sensing
flame.
•
Manual-reset Condition
•
Annunciation – on Navigation Bar
Lockout: Burner Max Trials
Outlet water temperature has
•
exceeded the additional high limit
setting
Auto-reset Condition
•
•
Annunciation – "Warning Additional
high limit" on Message Screen
LAARS Heating Systems
Corrective Action
122
3563
140
2463
158
1739
176
1253
194
919
212
685
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
Temp
Resistance
(°F)
(°C)
(Ω)
68
20
86
30
104
40
122
50
140
60
158
70
176
80
194
90
212
100
Inspect flame and wiring for
•
damage and continuity. Replace
if necessary.
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.
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.
7139
4937
3489
2514
1845
1376
12555
8025
5279
3563
2463
1739
1253
919
685
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