Climate Technology 43057 Owner's Manual - User Manual

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Model 43057 Owners Manual

HEAT PUMP DIGITAL THERMOSTAT

Congratulations!

Your new CTC thermostat will provide years of reliable service. Using this digital ther-

mostat 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

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 tem-

perature 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.

IMPORTANT INFORMATION

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

INSTALLATION

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 first 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

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.

• 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.

Table 1

If the terminal letter

on the existing

thermostat is. . .

R, V-VR, or VR-R

Y, Y1, or M

W1, W2, or W-U

G or F

O or R

L or X

C, X, or B

C (Required)

. . .then mark the

wire with adhesive

label

Mount Wallplate

• Remove the wallplate from the thermostat by pressing the release tab on the bottom of the thermostat.

See Figure 2.

Figure 2

• Position wallplate on wall and pull existing wires through the large opening, then level for appearance. If

the existing mounting holes from the old wallplate line up with the slots in the new wallplate, then use the

exisitng holes. If the exisitng holes do not line up with the slots in your new wallplate, then mark the wall

for holes for the provided plastic anchors.

• Drill holes with 3/16” bit and gently tap anchors into the holes until flush with wall.

• Reposition wallplate, pulling wires through large opening. Insert provided mounting screws into wall

anchor and tighten. See Figure 3.

Figure 3

Release Tab





















1 2

Connect Wires and Mount Thermostat to Wallplate

• Match and connect the labeled wires to the appropriate coded terminal screws on the wallplate. See

Figure 4. Ignore any wires which may be present, but which were not connected to the old thermostat.

Figure 4

Terminal Screws

• Be sure to tighten the terminal screws securely, as a loose wire could cause operational problems with

your system or thermostat.

• Push excess wire back into the hole to prevent interference when installing the thermostat to the

wallplate.

• Set the System Switch to “off”, and the Fan Switch to “auto”.

• On the back of the thermostat are the System Set-Up Switches. See Figure 5. If the heat pump system

has an electric auxiliary system, then slide the #1 switch to HE position. If the heat pump system has a

gas auxiliary system, then slide #1 switch to the HG position.

To set up the LCD display to show the temperature in Fahrenheit, slide the #2 switch to the F position. To

set up the LCD display to show the temperature in Celsius, then slide the #2 switch to the C position.

Figure 5

System Set-Up

Switches

THERMOSTAT CONTROLS

• Open the thermostat’s front cover. See Figure 6.

Figure 6

• Insert the tabs on top of the thermostat body into the slots at the top of the wallplate. Press the bottom of

the thermostat body into the snap on the bottom of the wallplate. (

NOTE

: Do not force the thermostat onto

the wallplate, as the terminal pins may be damaged. If it does not snap properly, the thermostat may not

work.)

• Turn on power to the heat pump system.

• If the wiring to the thermostat has been correctly connected, and if the thermostat has been correctly

mounted to the wallplate, then the LCD Display should show the indoor room temperature.

system

off

cool

heat

fan

auto
refresh
on

reset

filter

heat

sys em aux

Switches and Buttons

A LCD Readout

- displays indoor temperature, set temperature, and information about the heat pump

system’s operation and status.

B System Switch

- “em heat” is the Emergency Heat. NOTE: The Emergency Heat Mode is not an energy

saving mode, so use it only when necessary. “heat” is the normal heat mode. “off” turns the system off.

“cool” is the normal cooling mode.

C Fan Switch

- In Auto mode, the fan runs when the system is on for heating or cooling. The Refresh mode

sets the fan to run automatically at intervals of 10, 15, 20, or 30 minutes out of every hour when the system

is not running for heating or cooling. In the On mode, the fan runs continuously regardless of system

status.

D Reset button

- push the Reset button with the end of a paper clip to reset the thermostat and return to its

previous settings.

E Filter button

- resets the filter time counter.

F Down button

- used to change the temperature setting and the option settings.

G Up button

- used to change the temperature setting and the option settings.

H System LED’s

- for heat pump systems that have fault detection capabilities, the “sys” LED glows red

when the thermostat has detected a fault through the L terminal connection from the heat pump. The “em”

LED glows red when Emergency Heat is turned on. The “aux” LED glows green when the auxiliary heat is

turned on.

LCD Display

A temp

- the large number being displayed is either the indoor temperature or the set temperature.

B em

- emergency heat is turned on.

C heat

- normal heat is turned on.

D cool

- normal cooling is turned on.

E fan

- indicates the fan is running.

F st 1

- comes on when you set the Stage 1 heat and cool span.

G st 2 -

comes on when you set the Stage 2 heat and cool span.

H Filter button

- resets the filter time counter.

I alpha-numeric -

displays temperature (either indoor or set).

J C

- the temperature being displayed is Celsius. Select either Celsius or Fahrenheit with the #2 System

Set-Up Switch. NOTE: The LCD Display DOES NOT show an “F” for Fahrenheit.

K set

- the large number being displayed is the set value (temperature, Stage 1 span, Stage 2 span,

Residual Cooling Fan Delay, or the Refresh Fan Cycle time).

NOTE: With the “system” switch in the “off” position, if you press the Up or Down button, the LCD Display

will show “OF”.

system

off

cool

heat

OPERATION

Change the Set Temperature

1. Press and hold either the Up or Down button for more than

one second. The LCD Display will show “temp”, “set”, the set

temperature.

2. To raise the Set Temperature, press the Up button. To lower the

Set Temperature, press the Down Button.

Review the Set Temperature

1. Slide the “system” switch to either the “heat” position or the

“cool” position.

2. Press either the Up or Down button for less than one second. The

LCD Display will show “temp”, “set”, and the set temperature.

Up Button

Down Button

“heat” position

“cool” position

Heating or Cooling

1. To set the system for Heating, slide the “system” switch to “heat”.

To set the system for Cooling, slide the “system” switch to “cool”.

2. Slide the “fan” switch to “auto”, refresh”, or “on”.

Setting Options

The following Options are available on your thermostat:

1. 1st stage span - The factory setting for Stage 1 heating and cooling is 1, meaning that your thermostat will

cycle at 1°F (0.5°C) above and below the set temperature in Stage 1. If the system is cycling too fast or

too slow, then the Span can be adjusted to change the cycle time.

2. 2nd stage span - The second or auxiliary stage turns on when the first stage does not have enough

capacity to reach the set temperature. The factory setting for Stage 2 is 2 (3°F, 1.5°C).

3. The Residual Cooling Fan Delay Setting - Sets the fan to run for 0, 30, 60, or 90 seconds after the

compressor turns off in the cooling mode. The default setting is 30 seconds.

4. The Refresh Cycle Time - Sets the fan to run automatically at intervals of 10, 15, 20, or 30 minutes to

circulate air when the system is not running for heating or cooling. The default setting is 15 minutes.

To access the Option Mode and set the Span setting of the 1st stage:

1. Press the Up and Down buttons at the same time and hold them for three seconds. The LCD Display will

show “st 1”, “set”, and the 1st stage Span setting, either 1 (factory setting), 2, or 3, meaning that the Span

setting is at 1°F (0.5°C), 2° (1°C), or 3° (1.5°C).

2. Press the Up button to increase the 1st stage Span setting, which will cause your system to run longer.

Press the Down button to decrease the 1st stage Span setting, which will cause your system to run

shorter.

To set the Span setting of the 2nd stage:

1. Press the Up and Down buttons at the same time again and hold them for three seconds. The LCD

Display will show “st 2”, “set”, and the 2nd stage Span setting, either 1, 2 _(factory setting), 3, 4, or 5,

meaning that the Span setting is at 2°F (1°C), 3°F (1.5°C), 4°F (2°C), 5°F (2.5°C), or 6°F (3°C).

2. Press the Up button to increase the 2nd stage Span setting. Press the Down button to decrease the 2nd

stage Span setting.

fan

auto
refresh

To set the Residual Cooling Fan Delay:

1. Press the Up and Down buttons at the same time again and hold them for three seconds. The LCD

Display will show “cool”, “set”, and the current Residual Cooling Fan Delay time in seconds (0, 30, 60, or

90).

2. Press the Up button to increase the Residual Cooling Fan Delay time. Press the Down button to decrease

the Residual Cooling Fan Delay time.

To set the Refresh Cycle Time:

1. Press the Up and Down buttons at the same time again and hold them for three seconds. The LCD

Display will show “fan”, “set”, and the current Refresh Cycle Time in minutes (10, 15, 20, or 30).

2. Press the Up button to increase the Refresh Cycle Time. Press the Down button to decrease the Refresh

Cycle Time.

Filter Reminder

The LCD Display will show “filter” after every 400 hours of fan operation, as a reminder to change the

HVAC system’s filter as soon as possible.

Resetting Your Thermostat

Should the thermostat’s previous settings be desired, use the tip of

a paper clip to press the “reset” button.

NOTE: Pressing the Reset button reverts the thermostat to its

previous settings, NOT the factory settings.

TROUBLESHOOTING

Problem

Solution

Scrambled or double

display (numbers over

numbers)

1. Remove the clear Mylar decal form the LCD Display.

1. Check wiring connections. A Common (C) wire is required for operation.

2. Press and hold the Reset button for two seconds with the tip of a paper

clip.

LCD Display is blank

Auto/Fan does not turn on

1. Move the #1 System Set-Up Switch (HG/HE) to the opposite position.

Fan runs continuously

1. Check the Fan Switch. The fan will run continuously if the Fan switch is in

the “on” position.

Erratic display

1. Press and hold the Reset button for two seconds with the tip of a paper

clip. The thermostat will need to be re-programmed.

Heating or cooling does

not go on or off

1. Ensure the System Switch is in the desired position (“heat”, “cool”, “em

heat”).

2. There may be as much as a 4 minute Compressor protection delay before

the Heat or Cool system turns on - wait and check.

3. Check your circuit breakers and switches to ensure there is power to the

system.

4. Make sure your furnace blower door is closed properly.

reset

TROUBLESHOOTING

Problem

Solution

System continues to op-

erate in the Off position

1. Replace thermostat.

Thermostat permanently

reads “HI”, “LO” or “E1”

after pressing the Reset

button

If you experience any other problems with your CTC thermostat, call CTC Technical Support

at 1-800-676-7861 from 8am to 5pm Central Time.

WIRING DIAGRAM

Climate Technology Corp.

2500 FRISCO AVENUE

MEMPHIS, TN 38114

A Hunter Fan Company

Form No. 41982-01, 03/31/06

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