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Question posted by hotjohnnyboy22835 on November 8th, 2015

What's The Blue Wire Go To

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Answer #1: Posted by TechSupport101 on November 8th, 2015 8:47 PM

TechSupport101

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May 24th, 2013

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Hi. It will depend on your system. It is either the 24V VAC common wire or the AC Y-terminal.

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Related Honeywell CT41A Manual Pages

Owner's Manual - Page 1

... IF NEEDED TO DRILL HOLES IN WALL WIRE CUTTER/STRIPPER IF NEEDED TO STRIP WIRES MERCURY SWITCH TYPICAL LOCATION OF A MERCURY SWITCH IN A THERMOSTAT M10614 LEVEL, IF NEEDED TO LEVEL THERMOSTAT FOR APPEARANCE M20551 Fig. 1. CT41A Heating/Cooling Thermostat INSTALLATION INSTRUCTIONS MERCURY NOTICE If this thermostat to determine the thermostat suitability for compatibility with your new...

Owner's Manual - Page 2

...M, VR, 4, A or Power R New Thermostat Terminal Marking G Y W Your 5-wire system cannot use a CT87B instead. use this thermostat; CT41A HEATING/COOLING THERMOSTAT 2 REMOVE OLD THERMOSTAT ❑ Test to be concerned; NOTE: If terminal designations on to thermostat matching terminals. 2 Terminal Functions. WIRES THROUGH WALL OPENING M5136 Fig. 3. Wrapping wires around a pencil to keep...

Owner's Manual - Page 3

... or control and prevent burnout of the thermostat base. ❑ Fasten thermostat to wall or vertical outlet box with the thermostat wires connected to it snaps free of your heat...for hole location. ❑ Place a bubble level or plumb line against the thermostat to 0.4A.) CT41A HEATING/COOLING THERMOSTAT 8406 SHOWS VOLTAGE RATING SHOWS ANTICIPATOR SETTING V8043E 1004 4 24V 50/60CY .32...

Owner's Manual - Page 4

... and air conditioning. Refer to On. NOTE: If your system. ❑ Observe system operation for operation. 6 TROUBLESHOOTING (TABLE 2) Your Honeywell thermostat requires little or no attention. CT41A HEATING/COOLING THERMOSTAT 4 CHECK OUT THERMOSTAT The System switch controls as follows: Auto: fan operates when heating or air conditioning system operates. Off: heating and air conditioning...

Owner's Manual - Page 5

CT41A HEATING/COOLING THERMOSTAT Symptom No heat Furnace turns on the wall. Thermostat setting and thermometer reading disagree. ... switch is too short. Other. See step 7. Table 2. Recalibrate. Repair broken wires. Contact service technician for the system to thermostat. Relight pilot flame according to On position. Move switch to furnace manufacturer instructions. ...

Owner's Manual - Page 6

CT41A HEATING/COOLING THERMOSTAT 7 RECALIBRATE THERMOMETER If the thermostat setpoint and the thermometer reading do not agree, the thermometer may need ... ❑ If the readings are different, insert a hex head wrench into operation. Follow this procedure: ❑ Remove thermostat cover. ❑ Set the cover on a table near an accurate thermometer. ❑ After allowing five or ten minutes...

Owner's Manual - Page 7

... the possession of incidental or consequential damages, so this warranty, please write Honeywell Customer Relations, 1985 Douglas Dr N, MN10-1461, Golden Valley, MN 55422. CT41A HEATING/COOLING THERMOSTAT Limited One-Year Warranty Honeywell warrants this product, excluding battery, to be to repair or replace the product within a reasonable period of time. If...

Owner's Manual - Page 8

Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Scarborough, Ontario M1V 4Z9 69-0788-2 G.H. www.honeywell.com/yourhome on recycled paper containing at least 10% post-consumer paper fibers. CT41A HEATING/COOLING THERMOSTAT Automation and Control Solutions Honeywell International Inc. Rev. 10-03 Printed in U.S.A.