Honeywell CT41A Benutzerhandbuch

69-0788-2 4

The System switch controls as follows:

Heat: heating system only operates.
Off: heating and air conditioning systems are discon-

nected.

Cool: air conditioning system only operates.

The Fan switch controls as follows:

Auto: fan operates when heating or air conditioning 

system operates.

On: fan operates continuously.

NOTE: In the following instructions, disregard heating 

or air conditioning directions if not applicable to 
your system.

Compressor Damage Hazard. 
Operating at too low of an outdoor 
temperature can cause compressor damage.
Do not operate cooling if outdoor temperature is 
below 50°F (10°C). 
Allow compressor to remain off for five minutes 
before restarting.
Refer to manufacturer’s recommendations.

❑

Turn on power to the heating/air conditioning system.

❑

Observe system operation for at least one cycle on 
both heating and air conditioning. To observe:

❑

Place the System switch at  the Heat position and the 
Fan switch at the Auto position. Move the temperature 
setting lever 10°F (6°C) below room temperature. The 
heating equipment should turn on. A short warmup 
period may be required before system fan turns on.

NOTE: Some systems have a time delay that can pre-

vent operation up to five minutes.

❑

Turn the Fan switch to On. The system fan should turn 
on and operate continuously. The system blower 
should continue to operate at any System switch or 
thermostat setting.

❑

Place the System and Fan switches at the desired 
settings for operation.

Your Honeywell thermostat requires little or no attention. 
Most problems can be resolved according to Table 2.

NOTE: If your system is heating-only or air 

conditioning-only, disregard sections not 
applicable to your system.