ATC LIFESTYLE 500 Technical manual

LIFESTYLE
Digital Electric Radiators
INSTRUCTIONS FOR USE & INSTALLATION

2
IMPORTANT:
- To prevent overheating, do not cover the radiator.
- You must not sit on the radiator.
- This appliance is not intended for outdoor use.
- If the power cord is damaged, it must be changed by the
manufacturer, its after-sales service or persons qualified to
do so, to avoid possible danger.
- The radiator should not be located underneath an electrical
connection. The electric supply line should be protected with
a high sensitivity differential device (R BO).
- The radiator must be installed so that around the radiator
there is sufficient space for proper circulation of hot air, with
a minimum distance of 100 mm to curtains, furniture, etc.
Anyone who is in the bathtub or shower should not have
access to the switches and other power operation devices,
always keep at least 0.6 m between the radiator and the
bath or shower.(UK: Outside zone 2, Ireland: Outside zone
3)
- This heating apparatus holds a specific amount of special
oil. Repairs where it is necessary to open the oil tank must
only be made by the manufacturer or AT . AT should be
contacted in case of any oil leakage.
- A Fused Spur must be included in the wiring to the heater.
- This appliance can be used by children aged 8 years and
above and persons with reduced physical, sensory or mental
abilities or lack of experience and knowledge, if they have
been given supervision or appropriate training regarding the

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use of the device in a safe way and they understand the
dangers involved. hildren should not play with the
appliance. leaning and maintenance should not be
performed by unsupervised children.
- hildren under 3 years should be kept out of reach of the
appliance unless they are constantly supervised.
- hildren between age 3 and younger than 8 years old
should only turn on / off the device whenever it has been
placed or installed at its normal operating position provided
they are supervised or have received instructions
concerning use of the appliance safely and understand the
risks that the device has. hildren from 3 years and under 8
years old should not plug in, regulate, clean the appliance or
perform maintenance.
CAUTION - Some parts of this produ t an be ome hot
and ause burns. Pay parti ular attention when hildren
and vulnerable people are present.
- If the radiator is discarded, ensure it is recycled responsibly
and follow any local provisions concerning recycling of oil.
- A Safety Data Sheet is available from [email protected] on
request.

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This produ t is in onformity with the Dire tive EU 2012/19/EU
The symbol of the “crossed-out wheeled bin” shown on the appliance
indicates that, at the end of its working life, the product must be treated
separately from domestic waste and must be disposed of in a selective
collection center for electrical and electronic appliances or must be returned
to the distributor upon purchasing an equivalent new appliance.
Users are responsible for disposing of appliances at the end of their working life in
established collection centres. The correct collection of the appliance, allowing for the
appliance to be recycled at the end of its working life, its treatment and its environment-
friendly dismantling help prevent any negative effects on the environment and on public
health and favour the recycling of the product components.
For more detailed information on the collection systems available, contact the local
collection facilities or the distributor where you made your purchase.
NOTE
A qualified electrician must carry out the electrical installation of
this radiator. The Electrical installation must comply with the
current UK and Irish regulations. Any claim on the warranty
could be invalid if these requir
e
ments have not been met
Packing List:
1x Lifestyle Radiator
2x Metal Brackets
2x Plastic overs (top)
2x Locking Plastic
overs
4x Grey Wall plugs
4x Hex-Head Fixings
Please contact [e-mail]
if any of the above are
missing.

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INDEX
LIFESTYLE .................................................................................................................................. 1
INDEX .......................................................................................................................................... 5
LIFESTYLE DIGITAL ELECTRIC HEATERS ............................................................................ 6
Lo ation ...................................................................................................................................... 6
Ele tri al Conne tion ................................................................................................................ 7
Mounting ..................................................................................................................................... 8
Operation .................................................................................................................................. 10
1. ontrol panel: ............................................................................................................ 10
2. Turning the heater on and off: ................................................................................... 10
Sele ting the Operating mode: ............................................................................................... 11
1. OMFORT ................................................................................................................ 11
2. E O ........................................................................................................................... 11
3. ANTI-FROST ............................................................................................................. 12
4. PROGRAM ................................................................................................................ 12
CONFIGURATION ..................................................................................................................... 14
1. Brightness level at rest .............................................................................................. 14
2. Maximum brightness Time ......................................................................................... 14
3. Setting the time: SET HOUR / DAY ........................................................................... 15
4. Open Window ............................................................................................................ 15
5. Adaptive start control ................................................................................................. 15
6. RESET DEFAULT ..................................................................................................... 16
Heating and temperature display ........................................................................................... 16
Manual mode ............................................................................................................................ 16
Open Window fun tion ............................................................................................................ 17
Adaptive start ontrol fun tion ............................................................................................... 18
Keyboard lo k .......................................................................................................................... 18
INTERNAL PARAMETER CONFIGURATION .......................................................................... 19
1. Param. 1: Temperature Offset ................................................................................... 19
2. Param. 2: Easy Mode ................................................................................................ 19
EASY MODE ............................................................................................................................. 20
ERROR NOTIFICATIONS ......................................................................................................... 20
CHARACTERISTICS TABLE .................................................................................................... 21
ECODESIGN TABLE................................................................................................................. 22
NOTES....................................................................................................................................... 23
WARRANTY .............................................................................................................................. 24

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LIFESTYLE DIGITAL ELECTRIC HEATERS
Thank you for choosing AT LIFESTYLE heaters, with their modern design, state-of-the-art
technology, great reliability and quality construction. AT LIFESTYLE heaters and all the
materials and components have passed strict controls to ensure their quality.
Before installing and operating your heater, please read these instructions carefully as they will
ensure the correct working order of the appliance.
Lo ation
The ideal place to install the Lifestyle radiator is as close as possible to the coolest wall in the
room. It is not recommended to install the radiator on un-insulated exterior walls, however in
this case, the part of the wall behind the radiator should be insulated.
In bathrooms, the radiators must not be installed inside the protected areas. In the UK the
heater must be mounted outside Zone 2, In Ireland the heater must be mounted outside Zone
3. The control unit switches must not be reachable, directly or indirectly, by a person in the
bath/ shower or using the wash basin.
Under no circumstances should the radiator be installed below an electric power point.
hoose the location of the radiator in respect of the minimum distances that are indicated
below
100mm
Unobstructed space each side
150mm
150mm
Note: If the window sill protrudes less than 20mm the gap above the heater can be disregarded.
0,6 m
0,6 m
ZONE 1
ZONE 2
ZONE 3

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Ele tri al Conne tion
The Lifestyle radiator must be connected to the mains supply (230V~50Hz.). It is recommended
to install a switched spur for each heater. In addition, the following warnings must be
considered:
-The ele tri radiator should not be lo ated underneath a light swit h where you need to
stret h over the heater to rea h or operate the swit h.
-The ele tri line should be prote ted with a high sensitivity differential devi e (RCBO).
-It is ne essary to dis onne t the power from the fixed wiring before installation.
Conne ting wires:
Brown: Live
Blue: Neutral
Yellow-Green: Earth
The connecting wires must be of the appropriate cross section, with regard to the length of
cable, type of cable and power rating of the appliance.
The appliance must be connected into a fused connecting box fitted with an appropriate sized
fuse for the radiator – see Technical Data on Page 21.
We recommend that the connecting box is positioned 10cm to the right of the appliance and at
15cm above the floor.
According to regulations, the appliance must be connected to the power supply by means of
an all-pole circuit breaker with a contact gap of at least 3mm or by a thermal-magnetic circuit
breaker. It is recommended to install the heaters on a circuit protected by an R BO

8
Mounting
The electric radiator should be fixed to the wall by the adjustable brackets supplied with the
heater, using the cardboard template printed on the box.
If for any reason cardboard template is missing, you can follow the instructions below:
1. Place the two metal brackets provided on the floor and against the wall as shown in
image 1 below. Ensure the MB stamp on the metal bracket is at the top.
2. heck Table 1 for the “A” distance between the brackets for your LIFESTYLE model.
3. Mark the small hole in the metal brackets on the wall with a pencil. These two marked
points determine the position of the two lower drill holes.
1
4. With the help of a level, position the brackets matching their lower holes with the
previously marked points and mark the upper holes with the pencil.
5. Drill the 4 marked holes. The grey plugs supplied require
an 8mm hole.
6. Insert the grey plugs into the pre-drilled holes. Screw the
metal brackets to the wall with the screws provided.
Model A (mm)
LIFESTYLE 500 160
LIFESTYLE 750 320
LIFESTYLE 1000 320
LIFESTYLE 1500 560
LIFESTYLE 1800 720
Table
1
2

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7. Attach the plastic pieces to the metal brackets:
3 4
STOP
8. Hang the heater as shown:
5
9. To detach the heater from the bracket:
1) Push the plastic
bracket away from
the metal bracket
2) Lift the plastic
bracket and pull the
base of the heater
forward away from
the metal bracket

10
Enter Manual mode
Operation
1. Control panel:
The control panel is made with a large TFT-L D screen with white backlight and black images
for ease of legibility. There are six touch sensitive keys as outlined below.
2. Turning the heater on and off:
Once the radiator is connected to the power supply (230 V ~ 50 Hz), the
standby icon or current operating mode will appear on the display.
If the radiator is in standby mode, to turn it on, tou h and hold the ON / OFF
key; a double beep will sound once the heater is on. The standby screen
changes to show AT and then the heater will start then in the previous
operating mode.
To turn it off, tou h and hold the ON / OFF key; a long beep
will sound and the GOODBYE screen will appear. The back light
will turn off after 1.5 seconds.
When the heater is in standby mode and if you touch any key a
short beep will sound and the standby screen will appear for 10
seconds. From Standby, the radiator can be locked (see page
18 of this manual).
In case of any power failure or disconnection, the radiator will always remember the previous
mode of operation, the temperature, and the state (if it is on or off).
The day and time is saved when disconnected from the mains power for up to 10 years,
depending on the button ell battery life. (Repla ement Cell CR2032)
Select operating mode
Go back to the previous
mode/menu
Standby, turn the
radiator on and off
Confirm modes, days,
hours, etc.
Multi- unction, Mode,
temperatures, days,
hours, etc.
Keyboard lock
T T-LCD Screen

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When the Button ell is depleted a small battery backup can save the day and time with
disconnections up to 1 minute. However, with longer disconnections, you will need to re-enter
the day and time according to page 15 of this manual.
IMPORTANT: As there are live cables inside the casing we recommend you contact an
authorised electrician to replace the button cell.
Daily and weekly programs are never lost even when dis onne ted from the power for
long periods.
Sele ting the Operating mode:
In all modes except Manual, the Mode menu is displayed by touching the
MODE key once. If you are in the Manual Mode, touch the MODE key twice
to access this menu.
In this menu, the desired mode can be selected by  and  keys, to select
and enter the mode touch the OK key.
The radiator will return to the previous mode of operation if MODE key is
touched, or after 30 seconds without touching any other keys.
In each of the operating modes the screen will automatically switch the display between the
current time and the day of the week.
1. COMFORT
In omfort mode the temperature is directly selected by  and  keys, between 12° and
30° in steps of 0.5° . If the keys are held, the temperature changes faster. When the
temperature reaches either the maximum or minimum value
it will stop.
Typical comfort temperature is 20-21.5° . The comfort
mode is normally used during the hours the room is
occupied.
2. ECO
In Economy (E O) mode, the radiator automatically sets a temperature between 0.5° and
4.5° less than the previously selected comfort temperature (The difference is able to be
directly set by the user with the  and  keys).
When the comfort temperature is raised or lowered, the eco
temperature automatically rises or falls by the set amount.
The comfort temperature can be set from 12° to 30° , the
E O temperature is from 7.5 ° to 29.5 ° , but always
between 0.5 ° and 4.5 ° below the comfort temperature.
Economy mode is used for short absence periods to prevent the temperature from falling
excessively.

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3. ANTI-FROST
In this mode the temperature setting is 7° and is factory
set. Anti-frost is usually used as an off set point and for
long periods of absence when you want to avoid freezing.
4. PROGRAM
In Program mode the radiator automatically switches on
and off according to the daily and weekly program set by the user.
The daily program display is divided into two screens; the AM screen
is from 00:00 to 11:59, and the PM screen from 12:00 to 23:59.
The Program is shown around a circle, representing an analogue
clock face. The screen automatically switches the display between
the current time and the day of the week every 5 seconds.
The program screen is shown permanently and displays its particular
12 hour program divided into half-hour intervals; the AM and PM
programs will be displayed based on the time of day.
Each half-hour interval of each day of the week can be programmed
as omfort, e o or anti-freeze:
OMFORT E O ANTI-FROST
The current half-hour interval flashes to indicate to the user what the
current set point is. Also, the Sun, Moon or Frost symbol is displayed
in the middle of the screen above the temperature.
In Program mode, comfort and eco set points can be directly modified with  and  keys,
when their particular mode is active, (anti-frost set point can never be modified). When the
comfort temperature is raised or lowered, the eco temperature automatically rises or falls by the
set amount.
Adaptive start ontrol can be applied to Program mode and can be enabled or disabled in
onfiguration mode (see page 18 for details of Adaptive start mode).
Program mode is the only mode in which this function operates

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Edit Program
To enter or change the program, touch the OK key when the radiator is in Program mode. This
will bring you to the program edit screen and allow the user to edit any half-hour section of any
day of the week (Monday to Sunday).
In the editing screen, the user chooses which day of the
week the program is going to modify. The heater will
default to the current day and the nearest half hour to
the current time.
By touching the  and  keys, the user can select the
desired day to program the heater or the half-hour
section to be modify. The relevant section will be
outlined with a box around either the day or the time.
Touch OK to enter the section that you wish to change.
When selecting the day using the  and  keys, you can choose any day of the week moving
forward or backward as required. The days will cycle Monday through Sunday.
When the desired day is selected, its 12 hour program (AM or PM, depending on the selected
hour) will be shown. onfirm the day by touching OK and then move the box to the time and
touch OK to begin programming.
You can freely move through the half-hour sections of
the program with the  and  keys, going from AM
program (00:00 to 11:59), and PM program (12:00 to
23:59).
“AM” or “PM” is shown next to the day to ensure that the
correct time setting is being changed.
In the example on the right it shows Wednesday AM,
and 09:30. In this particular case the interval is the ½
hour from 09:30 to 10:00, when setting this interval the time and the mode icon flash.
To change the temperature set point between omfort, e o or anti-freeze mode touch the
MODE key:
OMFORT E O ANTI-FROST
Once you have selected the relevant mode for the ½ hour interval, use the  and  to move
forward or backward and touch the mode button on each ½ hour section of the day selecting a
temperature setting as required
When the selected day program (Wednesday in the example) is finished, save the program by
touching OK key, that particular day is saved and the screen returns to the program edit screen.
The other days of the week can then be easily modified the same way, by selecting the desired
day, entering and then amending the settings as required.

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Copy Daily program
If you want to copy the complete program of a particular day to the following day or consecutive
days, touch and hold OK when selecting the day, and release OK when you have reached to
the final day to be copied.
For example, to copy the Monday program, to the 5 working days, hold OK when it shows
 Monday , and release the button when  Friday  is reached.
To exit and return to Program mode from the editing screen, touch the MODE key.
When editing a program and no keys are touched for 30 seconds, the heater will return to
Program run mode.
CONFIGURATION
onfiguration mode ( ONFIG.), allows the user to set
parameters and functions for the other modes.
There are 6 menus in configuration mode, which can
be selected by  and  keys and touching the OK
key when desired menu is highlighted.
The sixth submenu (either the 1
st
or Last) will be
hidden until the screen is scrolled up or down.
When finished, the MODE key can be touched to
return to the previous mode. When no keys are touched for 30 seconds the heater will return to
the previous operation mode.
1. Brightness level at rest
This menu sets the level of brightness that the radiator will show when it is at rest, this is the
brightness level of the screen kept after the time selected in menu 2.
There are 4 levels to choose from:
0: Off
1: 25 % brightness
2: 65 % brightness
3: 100 % brightness (this is the level when any buttons are touched)
The level can be adjusted using the  and  keys, and confirmed with the OK key; the heater
will then return to the ONFIG screen.
2. Maximum brightness Time
This menu sets the time (in seconds) that the radiator screen is at 100% brightness, from the
time that the last key is touched, before going to rest.
The time value can be changed between 1 and 240 se . The time can be adjusted using the 
and  keys; if the keys are held then the time changes faster. onfirm the selection by touching
the OK key; the heater will then return to the ONFIG screen.

15
3. Setting the time: SET HOUR / DAY
This menu is used to initially set the time and day, and
also to change the time if required, for example during
daylight saving.
Use the  and  keys to select either the day of the
week, or (if the day is correct) the time to be modified.
Touch OK to enter the desired section to change.
Select the day by using the  and  keys, you can
choose from Monday to Sunday and confirm the correct day by touching OK.
When setting the time, the setting starts with the hour, select from 00 to 23 by using the  and
 keys. Once the hour is correct touch the OK key; the radiator will change to set the minutes,
selecting from 00 to 59 using the  and  keys and confirm by touching OK.
To go back to the ONFIG screen,
touch the MODE key at any time.
Daylight saving time will need to be
manually changed.
When the button cell battery life ends
(see pages 10 and 11), after a power
failure or disconnection from the mains of more than one minute the radiator will request the
user to set the hour/day, as the system clock is reset to Monday 00:00.
A battery icon will flash until the hour/day is set. After 30 seconds the
heater will choose Monday and 00:00 as the day and time and will return
to the last used mode of operation.
The heater will request the time to be set each time there is a power
disconnection of more than one minute or until the button cell is
replaced.
4. Open Window
This menu enables/disables the Open Window function (see page 17 of this manual). Select ON
/ OFF with the  and  keys and confirm with the OK key; the heater will return to the ONFIG
screen after a selection is made.
5. Adaptive start ontrol
This menu enables/disables the Adaptive start control (see page 18 of this manual). Select ON /
OFF with the  and  keys and confirm with the OK key; the heater will return to the ONFIG
screen after a selection is made.

16
6. Reset Default
This menu is used to reset the heater back to the default factory settings.
• omfort set point is 20º ,
• Economy set point is 16.5º ,
• Program is set to Economy for all half-hour sections of all days,
• The day is set to Monday,
• The time to 00:00,
• Brightness level at rest is set to 1,
• Maximum brightness time is set to 10s,
• Open Window and Adaptive start control are disabled,
• The radiator returns to Standby mode.
Heating and temperature display
When the room temperature is below the temperature set-point the radiator will turn the element
on to raise the room temperature. To show the user that the radiator is heating there is a symbol
of a thermometer being filled in the top right hand corner.
The room temperature is normally shown on the display, the set point temperature is only
displayed when the user attempts to change it; after the setting has been adjusted the display
will revert back to the room temperature:
The comfort and eco set-point temperatures can be modified both from comfort and economy
modes. The comfort and eco mode can be changed within program mode if they are active at
the time (the anti-frost set-point can never be modified).
Manual mode
The manual mode allows the user to manually operate the radiator overriding the current
setting. It is able to force the heater on or off for a set amount of time. After the time expires the
radiator will return to the previous mode of operation.
The manual mode is designed to allow a user to override the Program mode without having to
change the program itself. For example if you arrive when the heater is normally off, you can
heat the space to a comfortable temperature, and then have the heater return to its normal
mode without changing the program.

17
To enter Manual mode touch the hand key, then using the  and  keys
enter the amount of time you want to force the radiator on or off.
First the number of days is selected; enter between 0 and 365 days and
confirm with the OK key. If you only want a few hours, touch OK to enter 0
days.
The menu then moves to the number of hours selection. The user is able
to enter the amount of time to operate in 1 minute increments up to 1 hour,
after which time the steps increase to 30 minute increments.
When the total desired time is entered confirm with the OK key.
Please note the default minimum time is 30 minutes, however this can be decreased using the
 key.
Finally, the desired temperature can be set by the  and 
keys, any temperature between 7° to 30° (in steps of 0.5º )
can be entered. Shutdown mode can be entered from either
7° or 30° by entering  or  keys once from each extreme.
Shutdown is indicated by 4 dashes on the screen.(- - - -). When
the desired temperature is entered confirm with the OK key.
The screen will show “DONE”
If no key is touched within 30 seconds before final confirmation, or the MODE key is touched,
the radiator will return to the previous mode of operation.
The selected time will remain on the display and count down until it is finished.
Although you cannot change the set time, it is possible to change the set-point
temperature during the operation of manual mode.
Once the set time has elapsed, the radiator will automatically return to the
previous mode of operation
To exit manual mode at any time, touch the MODE key and the radiator will
return to the previous mode of operation.
In the case where the power is disconnected to the radiator, the manual mode settings will be
saved and the remaining time will count down even though the heater is powered-off.
Open Window fun tion
When the Open Window mode is enabled in the configuration menu the
system automatically switches off the radiator when it detects a sudden
drop in temperature (4° in 20 minutes). This is normally caused when a
window or door is opened to the outside without turning off the radiator.
When the Open Window mode has activated it is indicated on the
display by a single screen with an open window.
In order to enable the heating again the user must touch the MODE key.
The heater will then return to the previous mode of operation.
Note: In installations where this function is activated very frequently, it may be appropriate to
keep it disabled.
* This fun tion is taken into a ount by Dire tive 2009/125/EC regulations and will give
the unit more effi ien y during operation.

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Adaptive start ontrol fun tion
When the adaptive start function mode is enabled, in the configuration menu the system
automatically switches on the radiator to ensure that the next on set-point is reached efficiently.
The system analyses the next two hours, and if there is a set point
higher than the current room temperature within that period, and
knowing the heating speed of the unit, the software calculates when it
needs to start heating. This calculation is made each 5 minutes.
This function only runs when the radiator is in Program mode. When
Adaptive Start is running a flashing clock icon is shown in the bottom left
corner of the screen. The mode will only function on temperature rise
e.g. from anti-frost to eco / comfort, or from eco to comfort.
When Adaptive Start is running the radiator progressively increases the
set-point temperature until the next programmed set point is reached.
* This fun tion is taken into a ount by Dire tive 2009/125/EC regulations and will give
the unit more effi ien y during operation.
Keyboard lo k
The user can lock the keyboard on the Lifestyle heater by touching and holding the  and 
keys for 2 seconds, un-locking is done in the same way
When the keypad is locked or unlocked, the screens below are displayed:
When the radiator is locked, the padlock icon will appear in the upper area of the screen. It is
possible to lock the radiator in all modes, as well as standby.

19
INTERNAL PARAMETER CONFIGURATION
There are two user configurable parameters in the Lifestyle heater. By design they are not
meant to be changed often.
To access the parameter selection menu, touch and hold the OK and
MODE for 5 seconds until menu appears on the display.
The first line shows the software version of the radiator, this information
may be required if you need to contact technical support regarding your
heater. It is not adjustable by the user and is only shown for information.
Param. 1: Temperature Offset
The 1
st
parameter on the menu is the probe orre tion setting. Adjustment of this value is
used in case the temperature measurement shown on the display of the heater is very different
from temperature measurements in the space.
For example, the radiator stops heating before the room temperature reaches the selected set
point temperature of 21º , the radiator has stopped when the room temperature is only showing
19º . As the room temperature remains 2° below the set point a value of -2.0 should be
entered to the incorrect measurement shown on the display.
The probe correction value is set by using the  and  keys, in steps of 0.1º . The value can
range from -5º to +5º . onfirm the set point by touching OK
The menu will then move to the 2
nd
parameter.
Param. 2: Easy Mode
The 2
nd
parameter on the menu allows the selection of an “Easy ontrol” way to control the
radiator.
1P: 1P is the default value and will allow full control over all the features of the LIFESTYLE
electric radiator. All the functions detailed in this manual are available in 1P
2P: 2P will enable EASY MODE (page 20), this is the most simple way to control the radiator.
Select either 1P or 2P using the  and  keys, and confirm by touching OK.
Touching OK in Parameter2 will exit the Internal Parameter onfiguration mode into the
selected mode (1P or 2P)
During the configuration of the internal parameters, if no key is touched for 30 seconds, the
radiator will return to the previous mode of operation.

20
EASY MODE
Once the radiator is set into the Easy Mode the radiator will only allow the user to raise and
lower the temperature setting.
There is no access to the clock, mode or configuration changes and no keyboard lock, just the
heating icon showing if the radiator is currently heating and the current room temperature.
Only the standby key, the  and  keys are operational.
The configuration values are set as shown below and cannot be modified:
1 - Brightness level at rest: 10 %
2 - Maximum brightness Time: 30 seconds
3 - Open Window: OFF
The radiator temperature set-point is adjustable with the  and  keys between 12º and
30º , in steps of 0.5º
ERROR NOTIFICATIONS
There are 2 types of errors that the electronics can detect; if an error is
detected one of the codes below will be shown on the screen until it is resolved.
ERROR CODE DESCRIPTION
ERROR1 Failure in microcontroller, EPR M or other PCB component
ERROR2 Failure of the NTC probe (e.g. disconnected, short-circuited, etc.)
When recovering from an error, the radiator will always return to Stand-by mode, the radiator
will not retain any previous mode or state.
If the radiator goes to Stand-by without any specific reason, it may have recovered from an
error.