TERMA KTX 3 - KTX 2 Operation and Troubleshooting; KTX 2 Problem Solving Guide


Heang element unit heats the radiator that it is installed in and precisely controls its
temperature at the same me. The device has 5-step temperature regulaon (buons:
and ) within temperature range from 30-60 degrees Celsius. buon is used to
turn the device on and o and to deacvate the TIMER Mode (if acve).
Construcon of the heang element unit as well as physical characteriscs of the heang
agent cause that the boom pipes (especially the two at the very boom of the radiator)
may have a lower temperature than the remaining parts of the radiator – this is a normal
phenomenon.
Turning the device on does not mean that it uses the same maximum power for the
whole me it is on. On turning the device on, it operates with the nominal power for
a short period of me in order to heat up the radiator to the set temperature. Aer
that, it turns itself on and o periodically, using only as much energy as it is required
to maintain the set temperature of the radiator for current external condions.

TIMER Mode is acvated by pressing the buon (yellow diode turns on).
1. TIMER Mode can be used to TURN OFF the device:
Press buon while the device is on – the device will turn o aer 2 hours.
2. TIMER Mode can also be used to TURN the device ON:
Turn the device o using the buon, press the buon – the device will turn on
aer 2 hours, with the same temperature it was set to prior to being turned o. If
the required temperature is dierent to the one from before when the device was
turned o, set the required temperature before turning the device o.
TIMER Mode can be turned o in at any me by pressing buon.

Problem  
Device is connected to
electricity, no diodes are
on, heang element does
not heat.
Device is o.
Turn the device using
buon.
Connecon problem. Check the connecon,
plug and the socket.
Heang element does not
heat, diodes are ashing
alternately.
Device indicates emer-
gency, thermal fuse is
damaged.
Turn the device o and
wait for the radiator to
cool down. Turn it back
on again.
Heang element does
not heat, diodes indicate
correct operaon.
Thermal fuse is burnt
or heang element is
damaged.
Turn the device o and
wait for the radiator to
cool down. Turn it back
on again.
Device heats despite
being turned o the with
buon.
Electronics damage. Disconnect the device
completely from the
installaon, wait for the
radiator to cool down and
turn it back on again.
