No short. No open. No fault. Steady resistance. Steady amp flow on bypass. Heating system sound.
Switch gives faulty report
(stat is open)
Switch has intermittent open.
Reconnected stat and circuit makes
Switch has intermittent function now.
Other trouble remaining is lack of grounding connection
System de-energized until new switch is delivered.
Plan to correct the ungrounded condition, replace switch [$320 special order] test and release