Unit 4, Kimpton Trade & Business Centre
Minden Road, Sutton, Surrey, SM3 9PF
Tel: 020 8254 6802
Fitting & Operating Instructions For The Thermatronic Radio
Frequency Electronic Control System (TESC display version)
Important Notes
Temperature Limits of Electronic Components
It absolutely necessary to ensure that the electronic control system components temperature do not rise above 60ºC.
For Hole In The Wall installations (sunken burners) see the attached sketch showing our suggested installation arrangement. If you keep
to air inlet and outlet free areas of 100cm2 each and ensure that the void under the fire is properly backfilled (to avoid flue pull under the
burner) then, assuming a normal room temperature, the temperature of the electronic components should not rise too much above 30ºC.
This allows a big margin of safety.
It is also very important to ensure that the fire is not subjected to intermittent flue downdraught, which can blow flames/gas down to the
underside of the burner and cause overheating of the electronics.
There are batteries both in the handset (2 x AA Good Quality Alkaline) and in the valve (3 x AA Good Quality Alkaline). The battery covers
can be opened without tools by using your fingernail and pressing to unhook the clip that retains to cover.
Replacing the batteries at least every 12 months will help prevent damage to the valve and handset owing to leaking batteries.
Use only brand new high quality alkaline batteries (Energizer showed good results in our test).
Replace always the complete set of batteries and do not mix brands.
Keep contacts clean and do not bend the contacts
As with all battery powered equipment, remove batteries if the fire is not used for long periods (to prevent old batteries from
leaking and damaging the valve).
Do not operate the fire without the battery covers in place.
For Hole In The Wall installations (sunken burners) the fire is supplied with batteries in a separate box that has a long lead which plugs
into a socket on the standard electronics/battery box. This allows the batteries to be placed in an accessible place such as behind the air
inlet grille, as shown on the installation sketch.
If using the extended battery box ensure that any batteries are removed from the electronics box battery compartment. This battery box is
available as an optional extra for other installations, if required.
All electronic equipment is sensitive to dampness and high humidity. The Thermatronic equipment must be installed in a completely dry
place that does not access directly to outside air. If the fireplace has recently been rendered it must be allowed to completely dry out
before the electronic equipment is installed
Gas Supply
In common with all other gas appliances, dirt and debris in the gas system can block the valve and gas injectors on this appliance, and
faults caused by this are not covered by the guarantee. Pipework installation must comply with approved standards and practices. If in
doubt as to the cleanliness of site pipework, install a sediment trap, or filter as close to the appliance as possible .
Handset & Valve Pairing
The handset is paired to the valve control during manufacture of the fire and is not forgotten if the batteries are removed.
If a new handset is obtained or the original handset loses communication with the valve control please refer to pages 7 to 8 in order to
make a new pairing.
NOTE. On some burners such as the Fireboxx and “sunken” burners it is not possible for the user to access the Receiver Box
to carry out a pairing. In this case a Qualified Installation Engineer will need to remove the burner to make a new pairing and
this will involve disconnecting the burner from the gas supply.
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Control System Information TESC
The appliance is fitted with the Thermo Electric Safety Control (TESC). The system operates on radio frequency and has
a remote control handset.
The gas control has an automatic ignition system, therefore does not have a standing pilot.
The control required 3 AA size alkaline batteries to be inserted under the battery compartment cover.
The handset and control device has been paired up and is ready to use.
Ensure the power isolator switch on the front of Fire Control is in the on position I.
NOTE: For safety reasons a button must be pressed and released for the command to be recognized. Keeping hold of a
button when pressing (unless otherwise instructed) will not be recognized as a command.
To operate the handset it must be held in your hand so always ensure you have a good grip around the handset to unlock
its functions.
The green unlock light will illuminate to show when the handset is unlocked and ready to accept commands.
This operation must be performed each time you want to operate the handset.
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Handset function and display
Lighting the appliance
Important – To operate the handset it must always be unlocked, this is carried out by firmly holding the handset in one
hand, which will allow operation of all functions.
Step 1: Unlock the handset by holding it.
The green unlock light will illuminate. Keep the handset held to keep the control unlocked, to enable operation of the
Step 2: With the other hand press the power button for about 3 seconds until:
A short acoustic beep will be heard and the unlock light on will flash, the word “pilot” will appear at the bottom left hand
corner of the display screen. At this point release the power button.
Step 3: The Fire should be lit within a few seconds, if it fails to light then repeat the process.
Adjusting the flame height
Step 1: Unlock the handset by holding it.
Step 2: Press the “+” button to increase the flame height, press the “–” button to decrease the flame height
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Turning off appliance
Step 1: Unlock the handset by holding it.
Step 2: Press and release the power button, this will turn off both the main burner and pilot burner.
Restarting the Appliance
If the fire is extinguished or goes out in use, allow 5 minutes before attempting to restart following the lighting sequence.
If the fire shuts itself off repeatedly, do not use the fire, and have the flue and fire checked by a suitably qualified person.
If the appliance is not lighting after 4 ignition attempts, close the gas tap and call the installer.
Close the gas tap in case of malfunctions and/or poor operation and warn the installer. The appliance is designed to display
a fault code on the handset in the event of a functional failure, this can be identified from the fault finding section.
Additional control functions
In addition, the remote control can also be used to set a number of additional functions:
Time and date
Temperature display in degrees Celsius or Fahrenheit
Snooze mode
Thermostat function
Caution - Although highly improbable, we cannot rule out that your appliance’s ignition process can be started
unintentionally through other remote controls. For example the remote control of your neighbours’ gas heater, but also car
keys and garage door openers. The result will be that your appliance will burn when you do not want it to.
Unintended ignition of your appliance could be solved or prevented by turning the ON/OFF switch or closing the gas tap
near your appliance. This is the safest precaution if the appliance is not is use for long periods to turn the ON/OFF switch to
the OFF position and to close the gas tap near your appliance.
Setting the time
Enter the SETUP menu. Hold the handset to unlock the keypad and keep held throughout the following steps.
Press and hold SET for several seconds. The symbol in the top centre will flash. Press and release the “mode” button
several times until the word “SETUP” appears flashing in the top right corner of the display.
Press and release “set” again to enter the “SETUP” menu.
Here you can change the clock from 12 hour or 24 hour format, the day of the week, hour of the day, minute of the
day and the display in Celsius or Fahrenheit.
To navigate through the menu “SET” moves to the next parameter and “Mode” move back to the previous parameter.
“+” and “-“ change the display parameter.
Setting the display for 12 or 24 Hour display:
The H indicates that it is time to set the timer to either 24 hour display or 12 Hour (AM or PM) display. Press the “+” or
“–” button on the handset to toggle between the two settings. When you are ready to confirm the setting you want press
the “SET” button to progress to setting the day of the week.
Setting the day of the week
Press and release the “+” and “–” buttons until the correct day of the week is shown on the display.
(Mo = Monday, Tu = Tuesday, We = Wednesday, Th = Thursday, Fr = Friday, Sa = Saturday and Su = Sunday).
Press “SET” to accept the day of the week and to progress to setting the Hour of the day.
Note: Whilst doing this setup pressing “SET” advances to the next display and pressing “MODE” will return you to the
previous display setting.
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Setting the Hour
Press and release the “+” or “–” button to change the hour to the correct hour and press set to store and to move to
setting the minute.
Repeat this for setting the minutes.
Setting the temperature display to Celsius or Fahrenheit.
Press and release the “+” or “-” button to toggle between C and F. When the display shows the desired symbol, press
and release the “SET” button to store.
As the important settings above have now been done, press and hold for a few seconds the “SET” button for a few
seconds and this will exit the setup menu.
Snooze mode
Snooze mode is a time period you can set which will turn off the fire after a certain time period has elapsed. This
function can be utilized during both the manual and thermostatic modes.
The snooze time period can be set before or during manual operation of the fire. Hold the handset to unlock as
described previously and press the mode button as many times as necessary until the word MAN and the Zzz symbols
are flashing at the top of the display. Press and release the set button and this will put the control into Manual snooze
The default time period for the snooze time period is 1:00 hour. Pressing the set button again will show you the snooze
time period remaining. This can be adjusted by pressing the “+” or “-“ buttons. The timer period that can be set is from 1
minute to 4:00 hours.
After adjusting the time, press set again to enter the time setting required (or if left for a few seconds this time is now
stored and used).Once this countdown timer has reached zero the fire will turn off.
Thermostatic mode
The handset has within it a thermostat sensor and this can be set so the fire will heat the room to match he temperature
set in the handset.
There are 2 temperature types that can be set:
Day mode temperature that has a sun symbol on the display
the default temperature is 24 degrees Celsius.
Night temperature that has a half moon symbol on the display
the default temperature setting is 18 degrees Celsius.
Hold handset and press and release the mode button several times as necessary until the display has a thermometer
symbol flashing at the top of the display. Press the set button to enter this mode.
Press the set button again to see the temperature setting that is set and the mode and on the left of the display is a sun
symbol showing it’s the day temperature.
If a different set temperature is required, while the display is showing this set temperature press the “+” and “–” buttons
to alter the setting. When finished either press set or leave and after a few seconds the new setting will be accepted
and the display will return to the time of day screen.
The fire will automatically turn to high or low rate depending on the set temperature. When the set temperature is
reached while the fire is in operation, the fire reduces the burner power level each minute until the burner is off. The
pilot will remain on for a further 30 minutes and if the set temperature is still too high, the pilot will then also extinguish.
NOTE: If at any time the power button is operated during Thermostat mode, the control will cancel any thermostat
operation and return the control to manual mode.
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Fault Finding
Check List
Unit does not respond.
Check remote is working properly.
Check battery power supply.
Check wiring is correct.
Check main switch is in the on position.
Handset does not work.
Check battery power.
Check handset is in range (wifi symbol displayed on
Ensure the handset is paired.
Unit starts but no spark
or weak spark.
Check spark lead is connected properly.
Check spark electrode is in the correct area and the gap
correctly distanced.
Check spark lead is not arcing on other parts of the
Unit sparks but does not
light pilot.
Check for a good spark.
Check the spark is in the correct area.
Check if the ventilation is not too strong.
Check if there is gas running through.
If there is no gas.
Check isolation tap/shut off valves are free from grease.
Check isolation tap/shut off valve/s are on.
Check for blockages.
If there is gas but pilot
does not light.
Check pressure is correct.
Check for blockages.
Check for draughts.
Check the pilot gas slots are clear.
Check for a clear spark.
Pilot lights but does not
light main burner.
Check the pilot flame is heating the thermocouple.
Check ventilation is not too strong.
Check ventilation is not too strong and the flame is not
blowing off the thermocouple and flame rectification probe.
Check gas pressure is correct.
Check pilot and burner flame stability.
Burner lights but turns of
within a short period.
Check ventilation is not too strong and the flame is not
blowing off the thermocouple and flame rectification probe.
Check gas pressure is correct.
Check pilot and burner flame stability.
TESC locked.
Unlock the handset.
Low current from thermocouple.
Too high ambient temperature.
Allow appliance
to cool before
Thermocouple not connected or bad
Check all connections
and rectify.
Flame signal after burner shutdown.
Flame signal before burner has started.
Too low voltage on power supply to start
the burner.
Replace the batteries
in control valve.
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Page 7 of 9
IMPORTANT NOTE: The handset is paired to the valve during manufacture of your fire and is not forgotten if the
batteries are removed
The time on the display screen will be lost after some minutes of no power but the pairing will remain. If you only need to
restore the time to the display see the relevant section in the subsequent pages of these instructions.
If the green indicator on the handset is flashing like a heartbeat and the communication symbol is missing on the screen (see
photo below) it is not in communication with the valve for some reason.
Potential causes are:
 The slide switch on the valve not in the on (I) position
 The batteries need replacing in the valve
 The handset is too far away from the fire (it needs to be some within a few metres)
Check and rectify the above. If the green light is still flashing and the communication symbol is missing from the screen,
then the pairing on the valve may have been accidentally altered and the handset will need to be reset and a new pairing
performed to restore communication.
Do not press the buttons on the valve to make a new pairing. If you do then you will have to reset the handset to accept
a new pairing and make a new pairing, see the sections on restoring handset communication).
Restoring communication with a display type handset
If the handset for whatever reason has lost communication with the Fire Control valve the green
light will be permanently lit and pulse brighter, when held like in a firm handshake.
In addition the communication symbol (shown left) and other symbols will be missing from the
display and it will appear as shown.
To reconnect do the following:
Reset the handset to clear the old pairing and enable it to accept a new pairing:
With good batteries inside hold the handset (like in a firm handshake) to unlock
the keypad and keep hold of the handset while doing the following:
Press and hold the SET button and keep it held for about 3 seconds until you hear
a second beep. Release the SET button and PROG appears at the top left of the
handset. SETUP should also be flashing at the top right corner of the display.
When SETUP is flashing, press and release the SET button to enter the menu.
H24 (or 12) will be flashing. Press and release SET button about 9 more times until
display shows CA with flashing 0. Press and release the + or – button once to change the
CA0 to CA1. Then press and release the SET button once again. The display will now
show 7ESC r4 (or some other number next to the r).
The handset is now at factory reset condition and a new pairing can be performed,
see next section.
To see a YouTube video of the above go to YouTube and enter the following as a search: TESC Gas Control – Display
Handset – Factory reset.
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Pairing the handset (with LCD display)
Ensure that the handset and gas fire control have good batteries, as described in the battery section
If the handset is in its factory reset condition (as performed above), the display will 7ESC plus the
letter r and a number (as shown in the photo).
Picking up and holding the handset will unlock the keypad and the green light will illuminate a solid green (and the LCD
backlight may come on if the room is dark enough).
NOTE: Ensure the small isolation slide switch on the top left of the gas fire control is slid to the right, (I) position to turn the
power on to the valve.
Red indicator light
Small isolation switch
Gas valve controls
Power Button
Place the handset near the fire, i.e. within a metre (3 feet). No need to hold the handset at this time.
Simultaneously press and hold the - and + buttons on the gas valve control (not the handset) until the red light on
top left of fire control begins to flash rapidly, (it will take about 5 seconds to start flashing), then immediately release
the - and + buttons and quickly pressing just the power button on the gas fire control valve. Note: Pressing of the
power button must be done within 1 second of the red light coming on. If not done quickly enough, then the above
must be repeated until done correctly.
You will then hear an audible sound from the handset and the display will show the symbol
" ˥ - - Γ " and the green light on the handset will be flashing. You now have 60 seconds to accept the pairing. To do
this pick up and hold the handset and hold it like a handshake to activate the unlocking of the keypad and press and
hold the "SET" button for a few seconds.
You will hear a few beeps from the handset and the display will change and enter the setup menu.
Whilst maintaining your grip on the handset, you can now set the display functions of the handset. Momentarily
pressing and releasing the SET button advances through the settable features and pressing and releasing the
MENU button returns to the previous one. Pressing + or – changes the displayed information, for example:
H 24 – This is the 12 hr or 24 hr time format. Pressing and releasing + or – will change H24 into H12. Once happy
with that setting, press and release SET to move to the day of the week.
Day of the week is Mo, Tu, We, Th, Fr, Sa, Su. Again pressing and releasing +/- will change the day and when
happy press and release SET to move to the hour of the day. (Pressing Mode button at this stage will return the
menu to the previous one, in this case H 24/12).
Do the same for the minute of the day and the temperature display C or F.
The remaining parameters do not need adjusting so keep pressing the SET button several times (about 7 times) to
advance the display to the end of the menu.
You know when the setup menu has ended as you will see the communication symbol (3 arcs of a circle) in the right
hand side of the display. This symbol indicates that the handset is in operation mode (not setup) and in good
communication with the fire valve control.
IMPORTANT NOTE: Even in case you do not complete all of the setup, the pairing is still stored once accepted by
pressing SET the first time. The handset will re-enter next unlock (pick up) or by entering another setup mode
manually. Do not send pairing request again from the valve! If this is done then another factory reset of the handset
required and reset and new pairing done again.
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