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18 69-0563—2
Troubleshooting (continued)
(continued)
Problem Check Action
Timer is losing time
(continued).
— high limit control. If clock
powered through system trans-
former, power to clock and
equipment may be Off on
safety.
Wire separate transformer to power clock.
— filter. May be clogged. Safety
limit on equipment may cut off
power to system.
Replace filter and reset clock.
Timer does not run. — voltage across the C and R
terminals.
Remove the thermostat from the wallplate or
subbase, and measure the voltage. Refer to
page 19 for cause and action.