•If RTD (Resistive Temperature Device) probe is defective, replace the probe.
NOTE: If ALL systems check out fine, call the ADC Service Department at (508)
2.No Control Power (“BLUE” Light Off)
a.PROBABLE CAUSES;
1a) Line voltage from main fused disconnected.
2a) Main disconnect on the
3a) OL11 (overload #11) tripped.
4a) Fuse #1 is blown.
b.POSSIBLE SOLUTIONS;
1b) Verify main line voltage to
•If line voltage is present go to paragraph #2b below.
•If line voltage is not present check fused disconnect and retest.
2b) Attempt to turn the
•If the switch does not engage, verify that sprinkler power is “ON” (“RED” light on main door).
•If “no,” refer to paragraph #1b above.
3)Open main enclosure and verify that OL11 has not tripped.
•If yes, check circuit, restart and test.
•If no go to section #3 on page 54.
•Verify that fuse #1 has not blown, check that the “RED” L.E.D. indicator is off.
•If “on” (fuse block L.E.D. “ON”), check circuit, replace fuse and test.
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