Troubleshooting
6-2
IC-SA-1511 (02/2014)
V/LNV Series Manual
sequence to determine the stage at which performance deviates from normal. By following a set routine
may possibly eliminate overlooking an obvious condition, often one that is relatively simple to correct.
If an obvious condition is not apparent, check each continuity of each circuit with a voltmeter or test lamp.
Each circuit can be checked and the fault isolated and corrected. In most cases, circuit checking can be
accomplished between appropriate terminals on the terminal boards in the control cabinet or entrance box.
Refer to the wiring schematic supplied for terminal identification.
Never attempt to circumvent any of the safety features.
6.2 — Emergency Shutdown
In case of emergency, shut down the burner by turning the “ON-OFF” switch to the “OFF” position. Turn
the fuel selector switch to the “OFF” position. Shut off the main manual fuel shutoff valves on the fuel
supply line. The unit can also be shut down with the main electrical power disconnect. Inspect the burner
carefully and troubleshoot before restarting the unit. Follow the instructions in Chapter 3 for starting and
operating.
The cause for loss of flame or any other unusual condition should be investigated and corrected before
attempting to restart. Failure to do so may result in serious personal injury or death.
Do not repeat unsuccessful lighting attempts without rechecking the burner and pilot adjustments. Damage to
the boiler, or serious person injury or death may result.
Do not re-light the pilot or attempt to start the main burner, either oil or gas, if the combustion chamber is hot
and/or if gas or oil vapor combustion gases are present in the furnace or flue passages or when excess oil has
accumulated. Promptly correct any conditions causing leakage. Failure to do so may result in serious personal
injury or death.
!
Warning
!
Warning
!
Warning
