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If You Have A Problem - Honeywell CT3650 Owner's Manual

Seven day 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.
Cooling does not come on.
System on indicator(
cool) is lit, but no warm or cool air is
coming from the registers.
Display flashes during programming.
Temperature change occurs at the
wrong times.
Table 4. Solution Guide.
Make sure the batteries are installed correctly.
Make sure the thermostat is mounted and latched on the wall plate.
Mount and latch the thermostat on the wallplate if it is not.
Make sure the temperature setpoints are:
40 to 90°F (4.5 to 32°C) for heating.
45 to 99°F (7 to 37°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 key to Heat.
Make sure the cooling setpoint is below the room temperature.
Make sure the circuit breaker is not tripped, and reset it if necessary.
Make sure the system switch at the air conditioner 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 key to Cool.
Wait five minutes after seeing the flame or snowflake and check the
= heat,
=
registers again. If no there is no hot or cool air coming from the registers,
refer to Heating does not come on or Cooling does not come on. If all of this
has been checked, contact your local heating and cooling contractor.
The temperature setting limit has been reached. The heating setting range
is 40°F to 90°F (4.5°C to 32°C). The cooling setting range is 45°F to 99°F
(7°C to 37°C).
1.
2.
3.
4.
NOTE:
Check the program times for the period in question.
Make sure the AM and PM settings are correct.
Make sure the current time and day settings are correct.
Reprogram any incorrect settings.
If your thermostat is set for Smart Response control, the start
times occur before your programmed comfort periods.
19
Then...
69-1285—2

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