Thermaco TESC - Restoring Communication with a Display Type Handset

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• NOTE: If the battery contacts are contaminated (e.g. previous battery leakage) the handset may be
permanently and irreversibly damaged, meaning a new handset may need to be purchased.
IMPORTANT NOTE: THE HANDSET IS PAIRED WITH THE VALVE IN THE FIRE DURING
MANUFACTURE. PAIRING IS NOT LOST IF BATTERIES ARE REMOVED. THE DISPLAY HANDSET MAY
LOSE RECORD OF THE TIME IF BATTERIES ARE REMOVED BUT PAIRING WITH THE VALVE WILL REMAIN.
REFER TO INSTRUCTIONS RELATING TO SETTING THE TIME TO RESTORE TIME TO THE DISPLAY.
If the green indicator light is flashing like a heartbeat, the handset is not communicating with the valve (on the
display handset the communication symbol will be missing)
Communication can be lost for various reasons including, but not limited to:-
• The slide switch on the valve not in ON (I) position.
• The batteries in the valve being low on power, or out of power.
• The handset being too far from the fire.
If the above are all in order and the handset is still flashing, pairing with the valve may have been
unintentionally altered. The handset will need to be reset, and a new pairing with the valve established (see
section on restoring handset communication).
If this does not resolve the problem a service engineer will be required.
2.1 RESTORING COMMUNICATION WITH A DISPLAY HANDSET.
If the handset has lost communication with the control valve, when activated the handset will display a constant
green light which pulses brighter periodically, and the symbol will be missing from the display.
The handset will need to be reset to allow it to accept a new pairing, in order to do this follow the steps below:-
1. Ensure good batteries are firmly and correctly mounted in the handset.
2. Hold the handset firmly to unlock the keypad (keep hold of the handset during the remaining steps).
3. Press and hold the SET button (approx. 3 seconds) until you hear a second beep.
4. Release SET button. PROG and SETUP should now be visible at the top of the display.
5. With SETUP flashing, press and release SET to enter the menu.
6. Keep pressing SET until CA 0 is displayed on screen.
7. Press + or - to change CA 0 to CA 1, then press SET.
8. The display should now read 7ESC rX (where X is a number).
A video companion for this process is available here, or search “TESC Gas Control - Display Handset - Factory
reset - to enable it to be paired again”.
The handset has now been reset to factory settings and is ready to receive a new pairing instruction (section
2.2).