Lochinvar 1.3 - Manual (Page 51)

51
3
Troubleshooting
(continued)
Service Manual
Table 3F (continued from previous page) Troubleshooting Chart - Fault Messages Displayed on Boiler Interface
FAULT DESCRIPTION CORRECTIVE ACTION
Sensor Open
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
Either the inlet water or outlet water
temperature sensor has been disconnected.
• Check the sensors and their associated wiring.
Repair or replace the sensor or wiring if damaged.
• Measure the resistance of the sensors and compare
the resistance to the tables on page 45 of this
manual.
• Replace the sensor if necessary.
Sensor Shorted
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
Either the inlet water or outlet water
temperature sensor has been shorted.
• Check the sensors and their associated wiring.
Repair or replace the sensor or wiring if damaged.
• Measure the resistance of the sensors and compare
the resistance to the tables on page 45 of this
manual.
• Replace the sensor if necessary.
Flue Sensor
Open / Removed
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
The flue sensor has been disconnected or
removed from the flue.
• Check the sensor and its associated wiring. Repair
or replace the sensor or wiring if damaged.
• Measure the resistance of the sensors and compare
the resistance to the tables on page 45 of this
manual.
• Replace the sensor in flue.
• Replace the sensor if necessary.
Flue Sensor
Shorted
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
The flue sensor has been shorted.
• Check the sensor and its associated wiring. Repair
or replace the sensor or wiring if damaged.
• Measure the resistance of the sensors and compare
the resistance to the tables on page 45 of this
manual.
• Replace the sensor if necessary.
Louver Proving
Switch
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
An optional remote proving switch is not
making.
• Check function of remote devices.
• Check for loose or misplaced jumper if proving switch
is not installed.
Tank Open
Sensors equipped with an internal limit
(such as the Lochinvar Squire
® Indirect
Tank), the limit has opened due to
temperature (195°F) or the sensor has
become disconnected.
• Check the tank temperature.
• Repair or replace the sensor wiring if damaged.
• Replace the sensor if necessary.
Parameters
Saved
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
After downloading parameters from a
laptop, the main control board must be
reset.
• Press the RESET button on the SMART
TOUCH display panel.