Smart temp ERT-100HP11/3S Operating Instructions Manual

Smart Temp

Thermostat

Operating Instructions

Smart Temp

Thermostat

TM

Model Number ERT-100HP11/3SERT-100HP11/3S

Thank you for purchasing the Smart Temp ERT (Electronic Room
Thermostat). This thermostat is the product of years of research into
the requirements of the Australian consumer. It has been designed
and manufactured to the highest quality standards and designed to be
a highly reliable, simple to use and a feature rich thermostat.

To take full advantage of the features and functions of this thermostat
please find time to read and understand these simple operating
instructions.

On

High

Med

Low

On/Off Speed Mode

All user functions are easily accessed by pressing the 6 clearly
marked soft touch buttons found on the face of the thermostat. The
thermostat is also fitted with a Liquid Crystal Display that indicates
room temperature, set temperature as well as the thermostat
operating mode.

To Turn the Thermostat On or Off

Pressing the On/Off button on the face of the thermostat toggles the thermostat
between the On and Off mode. The current operation mode is indicated in the top
left of the LCD by an arrow pointing to the word “ON”. When the arrow is Dark
(visible) the thermostat is in the ON mode and controlling the heating or cooling equipment connected to it.
When the arrow is not visible the thermostat is OFF and not controlling the room temperature.

Cool

Heat

A. Fan

Timer

Timer

+

-

Set

To Select the Fan Speed

The Smart Temp ERT is capable of controlling heating and cooling equipment fitted with up to three fan
speeds. By pressing the Speed button on the LCD, the thermostat will switch between Low, Medium, High
and AutoFan Speed mode. As each press of the Speed button is detected, the current fan speed will be
indicated on the LCD by the appropriate arrow being On (darkened). Auto Fan Speed mode will be
indicated when all three fan speed indicators are On in the LCD.

When Auto Fan Speed mode is selected, the thermostat will increase or decrease the fan speed of the
heating or cooling equipment depending how far away the Set (or desired) temperature is from the current
room temperature.
In Auto Fan Speed Mode, as all fan speed indicators are on, the current automatically selected fan speed
is indicated by the flashing arrow.

To Select the Required Operation Mode

The ERT is capable of fully automatically controlling the room comfort, or permitting manual override of
many of the thermostat functions depending on the preferences of the occupant. For example, the ERT has
the ability to have the fan running continuously when the thermostat is on, regardless of the requirement for
heating or cooling. Or the ERT will only bring on the fan on when there is a requirement to heat or cool the
building (Auto Fan Mode as indicated by “A.Fan” on the LCD). Further, the ERT will allow the selection of
heat only, cool only or auto changeover mode where the thermostat will automatically switch between
heating and cooling mode depending on ambient and set temperature (indicated by “Heat” & “Cool”
displayed simultaneously on the LCD).

By pressing the Mode button the thermostat will toggle through seven (7) operational modes. These
modes are

1 - Cool with continuous fan operation.
2 - Cool with Auto Fan operation.
3 - Heat with continuous fan operation.
4 - Heat with Auto Fan operation.
5 - Heat / Cool (Auto change over mode) with continuous fan operation.
6 - Heat / Cool (Auto change over mode) with Auto fan operation.
7 - Continuos Fan only operation. (No heating or cooling required)

To Adjust the Temperature

The room temperature can be adjusted to within a resolution of 1 deg C by pressing the Set button on the
right hand side of the thermostat. Pressing the + side increases the set (or desired) temperature by 1 deg
C. Pressing the - side decreases the set (or desired) temperature by 1 Deg C.

Pressing the Set button will cause the LCD display to change from indicating the current room temperature
to a “Flashing” indication of the Set (or desired) Temperature. After a few seconds the display will stop
flashing and return to display the current room temperature.

When the thermostat is calling for heat or cooling, the respective arrow will flash in the LCD.

The ERT has built in delays between heating and cooling to protect over cycling of the heating or cooling
equipment. While the ERT is in delay mode, the deg C symbol will flash in the LCD.

Timer Function

The Smart Temp ERT is fitted with a convenient 12 hour Auto On or Off timer. This feature is useful should
you wish to run the thermostat for an extra hour or two prior to bed, or to have the thermostat turn back on
automatically before you return home.

Using the Timer to automatically turn the system OFF

While the system is running, press the Timer button. The display will change and show the numeral “1”,
indicating the default 1 hour timer period. Pressing the Set + or Set - buttons you can select the number
of hours before the thermostat turns the system off. Pressing the Timer button again returns the system to
normal mode. The “Timer” arrow will now be on in the LCD to indicate the timer function is set

Using the Timer to automatically turn the system On
While the system is Off press the Timer button. The display will change and show the numeral “1”,
indicating the default 1 hour timer period. Pressing the Set + or Set - buttons you can select the number
of hours before the thermostat turns the system on. Pressing the Timer button again returns the system to
normal mode. The “Timer” arrow will now be on in the LCD to indicate the timer function is set

Cooling Selected

System Status

On or Off

Fan Speed

Turns the

System on & Off

This product is covered by a one (1) year

This product is covered by a one (1) year

return to base warranty which covers

return to base warranty which covers

faulty materials and workmanship.

faulty materials and workmanship.

Note

Note - This warranty does not cover

damage caused to equipment connected

damage caused to equipment connected

to this thermostat, or damage to the

to this thermostat, or damage to the

thermostat if not installed correctly by an

thermostat if not installed correctly by an

authorised HVAC installer.

authorised HVAC installer.

Note - DOES NOT

Note - This thermostat DOES NOT switch

This thermostat switch

mains (240VAC) voltage. Should your

mains (240VAC) voltage. Should your

HVAC equipment require a mains (240

HVAC equipment require a mains (240

VAC) thermostat please contact Smart

VAC) thermostat please contact Smart

Temp Aust P/L to obtain an optional

Temp Aust P/L to obtain an optional

Due to continual product development,

Due to continual product development,

this specification is subject to change

this specification is subject to change

On

High

Med

Low

On/Off Speed Mode

Adjust Fan

Speed

Selects Heating

or Cooling etc.

Activates turn on

or turn off timer

- This warranty does not cover

interface board.

interface board.

without notice.

without notice.

Cool

Heat

A. Fan

Timer

Timer

R C Y W G G G

24VAC

Heating Selected

+

Temperature

Adjust

-

Infra Red

Set

Auto Fan Selected

Timer Function On

Wiring Connections

Receive

(requires optional

IR Transmitter)

l

Reversing

Compressor

Valve on Heat

Fan Low Speed

m

h

Optional IR Remote

Fan High Speed

Fan Medium Speed

Smart Temp

Australia

Smart Temp Australia Pty Ltd

19 Indra Road Blackburn South 3130

Phone:[phone] Fax [phone]

www.smart-temp.com.au

TM