19
69-0643—1
Timer does not
— Voltage across the two C
Remove thermostat from the wallplate
run (continued).
terminals.
or subbase and measure the voltage.
Refer to Voltage at Timer Terminals
table for cause and reaction.
— Pins in program dial. If pins are
Push down on pins to make sure they
not completely seated in
are completely seated in program dial.
program dial, jamming with
index wheel can occur.
Timer loses time.
— Power may be interrupted.
Make sure power is on. Reset timer.
— High limit control. If timer
Wire separate transformer to power
powered through system
timer, or install backup batteries as
transformer, power to timer
shown in Fig. 2.
and equipment may be off
on safety.
— Filter may be clogged. Safety
Replace filter and reset timer.
limit on equipment can cut off
power to system.
Troubleshooting (Continued)
(continued)
Problem
Check
Action
Summary of Contents for 191108AJ
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