Lmv5 Will Not Start (Stays In Phase 12) - Siemens LMV5 Series Technical Instructions

LMV Series
1. Ensure that the LMV5 is in automatic mode through the following menu path:
ManualOperation > Autom/Manual/Off = Automatic
2. The burner will not start if the safety loop is open. Verify that there is 120 VAC on both
terminals X3‐03.1 and X3‐04.1.
3. Verify that there is 120 VAC at burner switch input terminal X5‐03.1.
4. Verify that the LMV5 is not in alarm. If so, correct the issue causing the alarm and reset the
fault.
5. Verify that ignition positions are defined for all activated actuators, including the VSD. This
can be done through the following menu path:
Params & Display > RatioControl > Gas/Oil Settings > SpecialPositions > IgnitionPos
6. Verify that the actual value of the boiler is less than the switch on threshold of the burner
(setpoint + SD_ModOn).
SCC Inc.
LMV5 Will Not Start (Stays in Phase 12)
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Technical Instructions
Document No. LV5‐1000
Section 7