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CT41A
Heating/Cooling Thermostat
INSTALLATION INSTRUCTIONS
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of it properly.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of an old control.
1 PREPARE FOR INSTALLATION
If you are unsure about wiring procedures, please call a
qualified service technician for assistance.
❑ To correctly in
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.5 .7 CT41A HEATING/COOLING THERMOSTAT 2 REMOVE OLD THERMOSTAT WIRES THROUGH WALL OPENING ❑ Test to be sure your heating and air conditioning systems (where applicable) are working correctly. If not, contact your local heating/air conditioning dealer. To avoid compressor damage, do not operate the M5136 cooling system when outdoor temperature is below 50°F (10°C). Fig. 3. Wrapping wires around pencil. ❑ Keep the old thermostat for reference until your new thermostat is functioning smoothly
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0.2 AMP 30 VAC T T F F .5 .5 .7 .7 CT41A HEATING/COOLING THERMOSTAT ❑ Push excess wire back into wall and plug hole with nonflammable insulation to prevent drafts from SHOWS affecting thermostat operation. VOLTAGE RATING ❑ Remove thermostat cover by pulling outward on right V8043E 1004 4 24V 50/60CY edge of cover until it snaps free of the thermostat SHOWS .32 AMP @ 60CY ANTICIPATOR base. SETTING ❑ Fasten thermostat to wall or vertical outlet box with a screw through the top mounting hole. S
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CT41A HEATING/COOLING THERMOSTAT 4 CHECK OUT THERMOSTAT The System switch controls as follows: ❑ Observe system operation for at least one cycle on Heat: heating system only operates. both heating and air conditioning. To observe: Off: heating and air conditioning systems are discon- ❑ Place the System switch at the Heat position and the nected. Fan switch at the Auto position. Move the temperature Cool: air conditioning system only operates. setting lever 10°F (6°C) below room temperature.
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CT41A HEATING/COOLING THERMOSTAT Table 2. Recommended Corrective Action for Your System. Symptom Problem Corrective Action No heat System switch is at Off of Cool position. Move System switch to Heat position. Blown fuse or tripped circuit breaker. Replace fuse or reset circuit breaker. Furnace power switch is at Off. Turn furnace power switch to On. No pilot flame. Relight pilot flame according to furnace manufacturer instructions. Incorrect connections to thermostat. With power to furnace at
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CT41A HEATING/COOLING THERMOSTAT 7 RECALIBRATE THERMOMETER If the thermostat setpoint and the thermometer reading do not agree, the thermometer may need recalibration. BACKSIDE OF COVER Follow this procedure: ❑ Remove thermostat cover. ❑ Set the cover on a table near an accurate THERMOMETER SHAFT thermometer. ❑ After allowing five or ten minutes for stabilization, compare the readings. ❑ If the readings are the same, replace the cover and put the system into operation. ❑ If the readings are
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CT41A HEATING/COOLING THERMOSTAT Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be free from defects in the workmanship or materials, under normal use and service, for a period of one (1) year from the date of purchase by the consumer. If, at any time during the warranty period, the product is defective or malfunctions, Honeywell shall repair or replace it (at Honeywell’s option) within a reasonable period of time. If the product is defective, (i) return it, w
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CT41A HEATING/COOLING THERMOSTAT Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 Printed in U.S.A. on recycled 69-0788—2 G.H. Rev. 10-03 www.honeywell.com/yourhome paper containing at least 10% post-consumer paper fibers.
