21
69-0643—1
Voltage At Timer Terminals
AC Voltages at
C-C Terminals
Check
Action
0 Vac.
— System power off.
— Restore power.
— Short in timer power supply wiring.
— Replace wiring.
— Limit switch contacts stuck open.
— Free or replace limit switch.
— Transformer supplying power is
— Replace transformer.
burned out.
Up to 15 Vac.
— System transformer used to power
— Use additional (separate)
the timer is inadequate.
transformer.
— Additional (separate) transformer
— Install transformer with proper
used to power the timer has
secondary voltage.
inadequate voltage.
15 to 30 Vac.
— Spring fingers on thermostat not
— Rebend spring fingers to a 45
making proper contact with subbase
degree angle to assure proper
terminals.
contact.
— Timer has failed.
— Replace thermostat.
Summary of Contents for 191108AJ
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