Honeywell Q682 User Manual page 21

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