Class A Troubletrouble
Simplex 4100ES: Class A Trouble
Simplex 4100ES·0 views·0 field notes
What This Code Means
A break in the wiring has occurred on a Class A (Style 6 or 7) circuit.
Common Causes
- 1Open circuit
- 2Broken wire
- 3Loose terminal connection
Resolution Steps
Trace the circuit wiring to locate the break and restore continuity to the return path at the panel.