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If You Have A Problem - Honeywell CT3500 Owner's Manual

Weekday, saturday and sunday programmable heat and/or cool low voltage (20 to 30 vac) thermostat and wallplate
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IF YOU HAVE A PROBLEM

If...
Display does not appear.
Temperature settings will not change
(example; cannot set the heating higher
or the cooling lower).
Heating does not come on.
Table 4. Solution Guide.
Make sure the batteries are fresh and installed correctly.
Make sure the thermostat is mounted and latched on the wallplate.
Mount and latch the thermostat on the wallplate if it is not.
Make sure the temperature setpoints are:
—40°F to 90°F (4.5°C to 32°C) for heating.
—45°F to 99°F (7°C to 35°C) for cooling.
Make sure the heating setpoint is above the room temperature.
Make sure the circuit breaker is not tripped, and reset it if necessary.
Make sure the power switch at the equipment is in the On position, and
set it to On if it is in the Off position.
Wait five minutes for the system to respond.
Set the system switch to Heat.
19
Then...
69-1199—4

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