Hunter 40120 Support Question
Hunter 40120 Support Question
Find answers below for this question about Hunter 40120.Need a Hunter 40120 manual? We have 3 online manuals for this item!
Question posted by Kaleenwoo on January 26th, 2013
Thermost Not Working
The heating unit wasworking until a Few days ago. Then the thermostat started working only intermittently. Yesterday, it started not working at all. We put fresh batteries in the thermostat, but it still is not working. We have had the thermostat for only slightly longer than a year.
Requests for more information
Request from Gdow57 on November 19th, 2022 10:46 PM
my Is doing the same. I've put in new batteries, but it still does not work. I like to know basic troubleshooting procedures.
my Is doing the same. I've put in new batteries, but it still does not work. I like to know basic troubleshooting procedures.
Current Answers
Related Hunter 40120 Manual Pages
Owner's Manual - Page 1
Electronic/Mechanical Thermostat
installation and operation manual
Model 40120
1
44018-01 04-01-2008
Owner's Manual - Page 3
Table of Contents
Important Information 5 Tools 6 Uninstalling the Existing Unit 9 Installing the Thermostat 12 Installing the wall plate 14
connecting the wires 15 attaching the thermostat 17 Operation 20 Indicators & Adjustments 22 Troubleshooting 25 Wiring Diagrams 27
3
Owner's Manual - Page 4
Electronic/Mechanical Thermostat
Model 40120
Congratulations! Please read this manual before beginning installation and save this booklet for choosing a Hunter thermostat.
Your new Hunter thermostat will provide years of reliable service and year-round energy savings.
Thank you for complete operation instructions.
4
Owner's Manual - Page 5
... Oil - important information This thermostat is not designed for heat pump systems or 110/220 V baseboard heating systems.
If you are unsure what kind of heating and cooling system you have, please contact a qualified HVAC Technician for assistance.
5 Fired Furnace
Electric Furnace
This thermostat is designed to work on the following heating and cooling systems:
Gas - Standing...
Owner's Manual - Page 6
To install your new thermostat, you will need the following supplies:
Flat-head screwdriver
Small Phillips-head screwdriver
Hammer
Electric drill and 3/16" bit
Two fresh 1.5 Volt (AA) size alkaline batteries
6 Tools This thermostat includes two #8 slotted screws and
two wall anchors for mounting.
Owner's Manual - Page 7
NOTICE! The wires must be labeled prior to removal to ensure proper reconnection.
7 Do not disconnect the wires from the existing thermostat before reading these instructions.
Owner's Manual - Page 9
... covers, screws or other locking devices that open to the back of the wall plate. Turn the power to access the wires from the existing
thermostat. Locate, but do not disconnect the wires.
(If wires are not visible, they may have doors that must be connected to expose the wires and...
Owner's Manual - Page 10
RH / r / vr / 4 w / h g / f
label the wire with this sticker:
24 Volt RH
heating W
fan G
G W RH
* See page 27 for complete wiring diagram.
10 If your existing thermostat is marked...
Owner's Manual - Page 11
... wire is used only for proper identification.
*If a wire marked C is present, C may want to secure the wires to the existing terminal designation for non-battery powered thermostats.
5. Refer to the wall as you have a wire marked C, do not always comply with standards, so wire color should not be ignored. If you...
Owner's Manual - Page 12
installing the thermostat INSTALLING THE THERMOSTAT
1.
Remove the new thermostat from the back plate by pulling the two halves apart. Wall Plate
Thermostat 12
Owner's Manual - Page 14
...and pull the labeled wires through the opening . Insert the mounting screws through the opening .
3. Verify that the thermostat is visually level and securely tighten both screws.
14 Remove the wall plate and drill two 3/16" holes where ...if there are flush with the wall.
6. INSTALLING THE WALL PLATE
2. installing the thermostat, cont. Tap the plastic anchors into the anchors.
Owner's Manual - Page 16
....
(The ends of any excess wire length back into the wall.)
3. Wires should be inserted behind the black terminal shields. CONNECTING THE WIRES
1. installing the thermostat, cont.
Owner's Manual - Page 18
... furnaces.
5. Restore power at the electrical panel or
furnace.
18 Set the switch to HE for a gas furnace or oil burner. Insert two fresh AA alkaline batteries. 6. Align the thermostat with the the wall plate,
and snap the two halves together. 7. ATTACHING THE THERMOSTAT
4. Locate the HE/HG switch on the back of the...
Owner's Manual - Page 20
System Switch
Thermometer Set Temperature Slider
SYSTEM OFF
90
HEAT
90
30
80
80
70
20
70
60
60
AUTO
50
10
50
ON
F
C
F
Fan Switch
Battery Indicator 20
Owner's Manual - Page 21
Note: In Auto , The fan will be turned on along with normal
operation of the thermostat.
Operation 1. To run the fan continuously, slide the Fan Switch to the desired
temperature. 2. The Fan Switch should normally be turned on by your ... to the On position. The System Switch determines the operating
mode of your furnace after its warm-up delay.
21 Select Off or Heat. 3.
Owner's Manual - Page 22
... room
temperature.
2. When this warning appears, install two fresh AA alkaline batteries at your system OFF. Your system will turn your earliest convenience.
3. When this warning appears, the thermostat is the Shut-down and will remain shut-off until you install two fresh AA alkaline batteries.
22 The second warning is shut down Indicator, indicated...
Owner's Manual - Page 24
...Set Temperature. If your system run LONGER, turn the Span Adjust counter clockwise.
4. Reattach the thermostat to the wall plate. To make your system is preset to change the cycle time. 1. Note: The ...Span range is in both the Heat and Cool modes and can be changed regardless of what position the System Switch is 0.6oF - 3oF...
Owner's Manual - Page 25
... is enough power to the system.
1 c. My system continues to the correct position.
1 b. Replace unit.
25 Check the HE/HG switch to ensure it is set to operate when the
thermostat is in the off .
1 a. Check the circuit breakers and switches to ensure there is closed
properly.
2. Replace the batteries with fresh AA alkaline batteries. 1 d. 1.
Owner's Manual - Page 10
If your existing thermostat is marked... RH / r / vr / 4 w / h g / f
label the wire with this sticker:
24 Volt RH
heating W
fan G
G W RH
* Vea la página 27 para el digrama eléctrico completo
10
Owner's Manual - Page 10
If your existing thermostat is marked... RH / r / vr / 4 w / h g / f
label the wire with this sticker:
24 Volt RH
heating W
fan G
G W RH
* Voir la page 27 pour le diagramme de câblage complet
10
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