40135 - Thermostat HUNTER - Free user manual and instructions

Product Type	Thermostat
Brand	Hunter
Model	40135
Dimensions	4.5 x 4.5 x 1.2 inches (11.4 x 11.4 x 3.0 cm)
Weight	0.5 lbs (0.23 kg)
Power Source	2 AA batteries (included) or 24 VAC hardwired
Display Type	Digital LCD
Temperature Range	45°F to 90°F (7°C to 32°C)
Programmable	Yes, 7-day programmable with 4 periods per day
Fan Control	Auto and On modes
Compatibility	Most single-stage heating/cooling systems
Installation	Wall mount, requires screwdriver and level
Cleaning Instructions	Wipe with a soft, dry cloth. Do not use liquids or cleaners.
Battery Life	Approximately 1 year with normal use
Low Battery Indicator	Yes, icon flashes on display
Reset Function	Yes, via reset button or battery removal
Safety Ratings	UL listed, low voltage
Warranty	1 year limited
Included Accessories	Mounting screws, wall anchors, user manual
Country of Origin	China

Frequently Asked Questions - 40135 HUNTER

How do I install the Hunter 40135 thermostat?

Turn off power to your HVAC system. Remove the old thermostat base. Mount the new base using the included screws and anchors. Connect wires to the corresponding terminals (R, W, Y, G, etc.). Attach the faceplate and restore power.

How do I program the thermostat for weekdays?

Press the 'Program' button. Use the arrow keys to set the time and temperature for each period (Wake, Leave, Return, Sleep). Repeat for each day or copy settings to other days. Press 'Run' to save.

Why is my thermostat not turning on?

Check that the batteries are installed correctly and have charge. If hardwired, ensure the circuit breaker is on. Try a reset by removing batteries for 30 seconds.

How do I replace the batteries?

Gently pull the thermostat faceplate off the base. Remove old AA batteries and insert new ones, observing polarity. Reattach the faceplate until it clicks.

What do the error codes mean?

Common errors: 'E1' indicates sensor fault - try resetting; 'E2' means wiring issue - verify connections. Refer to the manual for full list.

Can I use this thermostat with a heat pump?

The 40135 is designed for conventional single-stage systems. It may not support heat pumps. Check your system compatibility or consult an HVAC professional.

How do I clean the thermostat?

Use a soft, dry cloth to wipe the display and exterior. Do not use any liquids, sprays, or abrasive cleaners as they may damage the electronics.

Does the thermostat have a backlight?

Yes, the display has a blue backlight that illuminates when any button is pressed, making it easy to read in low light.

How do I perform a factory reset?

Press and hold the 'Reset' button (located on the side or behind the faceplate) for 5 seconds. Alternatively, remove batteries for 2 minutes.

What is the temperature accuracy?

The thermostat maintains temperature within ±1°F (±0.5°C) of the set point under normal conditions.

USER MANUAL 40135 HUNTER

Electronic/Mechanical Thermostat

installation and operation manual

Model 40135

Our Technical Support Group is available from 8 am to 5 pm CST. They may be reached toll-free at 1-888-830-1326.

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

Electronic/Mechanical Thermostat

Model 40135

Congratulations!

Thank you for choosing a Hunter thermostat. Your new Hunter thermostat will provide years of reliable service and year-round energy savings.

Please read this manual before beginning installation and save this booklet for complete operation instructions.

IMPORTANT INFORMATION

This thermostat is designed to work on the following heating and cooling systems:

Gas – Standing Pilot Gas – Electronic Ignition Gas – Fired Boilers Gas – Millivolt Systems Oil – Fired Boilers Oil – Fired Furnace Electric Air conditioner Electric Furnace

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.

TOOLS

This thermostat includes two #8 slotted screws and two wall anchors for mounting.

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

NOTICE! Do not disconnect the wires from the existing thermostat before reading these instructions. The wires must be labeled prior to removal to ensure proper reconnection.

UNINSTALLING THE EXISTING UNIT

1. Turn the system power OFF from the existing thermostat. Turn the power to the HVAC system OFF at the main power panel or at the furnace.
2. Remove the existing thermostat cover to access the wires from the wall.

(Some thermostats may have multiple covers, screws or other locking devices that must be removed or disengaged.)

1. Locate, but do not disconnect the wires.

(If wires are not visible, they may be connected to the back of the wall plate. Some models may have doors that open to expose the wires and mounting screws.)

* See pg 27 for complete wiring diagram.

UNINSTALLING THE EXISTING UNIT, CONT.

4. Using the provided stickers, label each wire according to the chart.

(If the terminals are not labeled, contact a qualified HVAC technician.)

Note: Wire colors do not always comply with standards, so wire color should be ignored. Refer to the existing terminal designation for proper identification.

*If a wire marked C is present, C may be a Common wire and should not be used. If you have a wire marked C, do not connect it to any terminal. This wire is used only for non-battery powered thermostats.

1. Do not let the wires slip back into the wall during disconnection. You may want to secure the wires to the wall as you disconnect them. After all wires are labeled, disconnect each wire and remove the existing wall plate.

INSTALLING THE THERMOSTAT

INSTALLING THE THERMOSTAT

1. Remove the new thermostat from the back plate by pulling the two halves apart.

Illustration of hands connecting a wall-mounted electrical outlet to a device, showing wiring and terminal labels (no text or symbols present)

13

INSTALLING THE THERMOSTAT, CONT.

INSTALLING THE WALL PLATE

1. Position the new wall plate on the wall and pull the labeled wires through the opening.
2. If the existing holes do not match those on the Hunter wall plate, or if there are no existing holes, level the wall plate and mark the wall for two holes.
3. Remove the wall plate and drill two 3/16" holes where marked.
4. Tap the plastic anchors into the holes until they are flush with the wall.
5. Reposition the wall plate on the wall, pulling the wires through the opening. Insert the mounting screws through the mounting holes and into the anchors. Verify that the thermostat is visually level and securely tighten both screws.

15

INSTALLING THE THERMOSTAT, CONT.

CONNECTING THE WIRES

1. Loosen, but do not remove, the terminal screws.

Note: A jumper wire has been provided, connecting the RC and RH terminals for systems that do not provide both an RH and RC wire. If you have both an RH and RC wire, remove this jumper. If you do not have both an RH and RC wire, leave the jumper in place.

1. Match and connect the wires from the wall to the terminals as shown. Wires should be inserted behind the black terminal shields. Tighten each screw after the connection has been made.

(The ends of any extra wires should be wrapped in electrical tape and carefully pushed back into the wall.)

1. Push any excess wire length back into the wall to prevent interference.

HE/HG Switch

3D rendering of a device casing with internal components and a cable inserted (no text or symbols visible)

INSTALLING THE THERMOSTAT, CONT.

ATTACHING THE THERMOSTAT

1. Locate the HE/HG on the back of the thermostat. Set the switch to HG for a gas furnace or oil burner. Set the switch to HE for electric furnaces.

(The switch has no effect when the system is set to cooling mode.)

1. Insert two fresh AA alkaline batteries.
2. Align the thermostat with the wall plate, and snap the two halves together.
3. Restore power at the electrical panel or furnace.

3D rendering of a mechanical component with two internal slots and mounting holes, showing assembly or disassembly (no text or symbols)

OPERATION

1. Set the SET TEMPERATURE SLIDER to the desired temperature.
2. The SYSTEM SWITCH determines the operating mode of the thermostat. Select COOL, OFF, or HEAT
3. The FAN SWITCH should normally be located in the Auto position. To run the fan continuously, slide the FAN SWITCH to the ON position.

Note: In Auto, The fan will be turned on along with normal operation of your system. In a normal gas or oil furnace, the fan will be turned on by your furnace after its warm-up delay.

INDICATORS AND ADJUSTMENT

1. The THERMOMETER indicates the room temperature.
2. The BATTERY INDICATOR displays two stages of battery conditions. The first warning is the WEAK BATTERY WARNING, indicated by the BATTERY INDICATOR flashing once approximately every second. When this warning appears, install two fresh AA alkaline batteries at your earliest convenience.
3. The second warning is the SHUT-DOWN INDICATOR, indicated by the BATTERY INDICATOR flashing approximately twice every second. When this warning appears, the thermostat is shut down and will turn your system OFF. Your system will remain shut-off until you install two fresh AA alkaline batteries.

Span Adjust

SPAN

Close-up of a mechanical component with circular features and a hanging string (no visible text or symbols)

23

INDICATORS AND ADJUSTMENTS, CONT.

Your thermostat is preset to cycle your system off and on at 1°F above and below the Set Temperature. For maximum system efficiency and a sustained comfortable temperature your system should cycle 3 - 5 times per hour. If your system is cycling either too often or not often enough, then use a small Phillips-head screwdriver to turn the SPAN ADJUST left or right to change the cycle time.

1. Remove the top cover from the thermostat.
2. To make your system run LONGER, turn the SPAN ADJUST clockwise.
3. To make your system run SHORTER, turn the SPAN ADJUST counter clockwise.
4. Reattach the top cover to the thermostat.

Note: The Span range is 0.6^ F - 3^ F. The Span setting remains the same in both the Heat and Cool modes and can be changed regardless of what position the System Switch is in.

1. My heating or cooling will not turn on or off.

1 a. Check the HE/HG switch to ensure it is set to the correct position.
1 b. Wait. There may be as much as a 4-minute delay before the system turns on or off to protect the compressor.
1 c. Check the circuit breakers and switches to ensure there is enough power to the system.
1 d. Replace the batteries with fresh AA alkaline batteries.
1 e. If applicable, make sure the furnace blower door is closed properly.
1 f. If your system has 4 wires, ensure the jumper wire is installed between the RC and RH terminals.

2. My system continues to operate when the thermostat is in the off position.

2 a. Replace unit.

TROUBLESHOOTING

Is there help on the web?

Yes. Visit http://www.hunterfan.com for more information.

Can't I just call someone?

Sure. Our Technical Support Group is available from 8 am to 5 pm CST. They may be reached toll-free at1-888-830-1326.

4-w ire Heat/CoolSystem

graph TD
    G["Gate"] --> FanRelay["Fan Relay"]
    Rh["Rh"] --> HeatCool["Heat/Cool 24 V Supply"]
    Y["Y"] --> CoolContactor["Cool Contactor"]
    W["W"] --> HeatRelayOrValve["HeatRelay or Valve"]

5-wireeAlt/Col System

graph TD
    G["Gate G"] --> FanRelay["Fan Relay"]
    Rc["Rc"] --> CoolSupply["Cool 24V Supply"]
    Rh["Rh"] --> HeatSupply["Heat 24V Supply"]
    Y["Y"] --> CoolContactor["Cool Contactor"]
    W["W"] --> HeatRegal["Heat Regal or Valve"]
    CoolSupply --> HeatSupply
    HeatSupply --> CoolContactor
    CoolContactor --> HeatRegal
    HeatRegal --> Ground["Ground"]
    style G fill:#fff,stroke:#000
    style Rc fill:#fff,stroke:#000
    style Rh fill:#fff,stroke:#000
    style Y fill:#fff,stroke:#000
    style W fill:#fff,stroke:#000
    style CoolSupply fill:#fff,stroke:#000
    style CoolContactor fill:#fff,stroke:#000
    style HeatRegal fill:#fff,stroke:#000

WIRING DIAGRAMS

2-w ire Heat Only System

graph TD
    A["Heats 24V or MillivoltSupply"] --> B["Rh"]
    C["Heats Relay or Valve"] --> D["W"]
    B --> E["Ground"]
    D --> E

3-w ire Heat Only System

graph TD
    G["Gate G"] --> FanRelay["Fan Relay"]
    Rh["Rh"] --> HeatSupply["Heat 24V Supply"]
    W["W"] --> HeatRelayOralve["Heat Relay or V alve"]
    FanRelay --> HeatSupply
    HeatSupply --> HeatRelayOralve

WIRING DIAGRAMS, CONT.

3-w ire Cool0 nly System

graph TD
    G["Gate G"] --> FanRelay["Fan Relay"]
    Rc["Carrier Rc"] --> CoolSupply["Cool 24 V Supply"]
    Y["Y"] --> CoolContacter["Cool Contacter"]

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