Hunter Fan 43057 User Manual
HEAT PUMP DIGITAL THERMOSTAT
Model 43057 Owners Manual
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Congratulations!
Your new CTC thermostat will provide years of reliable service. Using this digital thermostat will provide more uniform comfort in your home through the seasons. Thank
you for buying a Climate Technology product!
Please read this manual for complete instructions on installing and operating your
thermostat. If you require further assistance, call CTC Technical Support at
1-800-676-7861 from 7am to 7pm Central Time.
Remove the mylar label from the display window.
TABLE OF CONTENTS
4 Important Information
4 Installation
4 - What You Need
5 - Remove Old Thermostat
6 - Wire Labeling
8 - Mount Wallplate
10 - Connect Wires and Mount Thermostat to Wallplate
13 Thermostat Controls
14 - Switches and Buttons
16 - LCD Display
18 Operation
18 - Review the Set Temperature
18 - Change the Set Temperature
18 - Heating or Cooling
19 - Setting Options
20 Filter Reminder
20 Resetting Your Thermostat
21 Troubleshooting
23 Wiring Diagram
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IMPORTANT INFORMATION
1.This thermostat is designed to work on the following systems:
• Single-Stage Heat Pump
• Mulit-stage Heat Pump (up to 2 heating and 2 cooling)
2.Temperature Range This thermostat can be set between 45°F and 95°F (7°C and
35°C).However, it will display room temperatures from 30°F to 99°F (0°C and 37°C). “HI” will
be displayed if the temperature is higher than 99°F (37°C), and “LO” will be displayed if the
temperature is lower than 30°F (0°C).This thermostat will automatically cutoff in Heat mode if
the temperature rises above 95°F (35°C), and automatically cutoff in Cool mode if the temperature drops below 40°F (4°C).
3.Compressor Protection This thermostat provides a 3.5 minute delay after shutting off
the system before it can be restarted. This feature will prevent damage to your compressor
caused by rapid cycling.
INSTALLATION
What You Need
This thermostat includes two #8 slotted screws and two wall anchors for mounting. To install
your thermostat, you should have the following tools and materials.
• Slotted screwdriver(s)
• Small Philips screwdriver
• Hammer
• Electric drill and 3/16” bit
Remove Old Thermostat
CAUTION: Do not remove any wiring from the existing thermostat before reading these
instructions carefully. Wires must be labeled prior to removal.
IMPORTANT! Turn off the power to the HVAC system at the mainpower panel or at the
HVAC system.
Remove existing thermostat cover and thermostat. See Figure 1. Some thermostats will have
screws or other locking devices that must rst be removed. Once the wall mounting plate is
exposed, look for wires.
If wires are not visible, they may be connected to the back of the wallplate. Again, look for
screws, tabs, etc. Some models have doors that open to expose wires and mounting screws.
See Figure 1.
Figure 1
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Wire Labeling
• CAUTION! TURN OFF POWER TO THE HEAT PUMP SYSTEM BEFORE YOU ATTEMPT
TO ACCESS THE THERMOSTAT’S WIRING.
• IMPORTANT! BEFORE DISCONNECTING ANY WIRES FROM THE EXISTING
THERMOSTAT, APPLY THE PROVIDED SELF-ADHESIVE LABELS TO THE WIRES.
• Use the information in Table 1 below and the provided adhesive labels to label the wires.
IGNORE THE COLOR OF THE WIRES since these do not always comply with the
standard.
If the terminal letter
on the existing
thermostat is. . .
R, V-VR, or VR-R R
Y, Y1, or M Y1
Y2 Y2
W1, W2, or W-U W2
E E
G or F G
O or R O
B B
L or X L
C, X, or B C (Required)
. . .then mark the
wire with adhesive
label
Table 1
• After labeling the wires, disconnect them from the existing thermostat terminals.
• Remove existing wallplate. To make sure wires do not fall back into wall opening, you may
want to secure them to the wall.
• If the hole in wall is larger than necessary for wires, seal the hole with insulating material so
that no hot or cold air can enter the back of the thermostat from the wall. This air could cause
a false thermostat reading.
• A wiring diagram is provided on page 23 of these instructions.
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