TERMA ONE, User Manual, Page: 14 / 100

14
User manual — ONE
Troubleshooting
Symptom Possible cause Adviced action
LED diode is not on,
heating element does
not heat
Damaged
electronics
contact Your local Distributor
LED diode pulsing:
WHITE & RED or
WHITE & YELLOW
The radiator is
not warming up
quickly
1. Check and confirm that the heating element's output
is not too low for the size of radiator.
2. (Dual Fuel only) - check the flow of the heated agent
is it flowing back into the central heating system, if this
is the case you will need to close one of the valves (flow
or return). In the case of a 'side connection' you will
need to close the upper valve. If the problem continues
contact Your dealer.
LED
diode
pulsing
WHITE
(mal -
function
alert)
TWO
flashes
Low water level
(work in dry con -
ditions)
1. May happen once or twice after switching on - this is
not a malfunction;
2. If lasts longer - check the lever of heating agent level
THREE
flashes
Overheating Check and reduce the water temperature in the central
heating system-must not exceed 82 deg
Check and confirm that the heating element's output
does not exceed the recommended output of your
radiator. Turn the heating element off with the ON/
OFF button and wait for 20 min. If the radiator is still
hot, disconnect it from its electrical supply - contact
the Distributor.
FOUR
flashes
Temperature
sensor damaged
Contact Your local Distributor
FIVE
flashes
The radiator is
not warming up
quickly
1. Check and confirm that the heating element's output
is not too low for the size of radiator.
2. (Dual Fuel only) - check the flow of the heated agent,
is it flowing back into the central heating system, if this
is the case you will need to close one of the valves (flow
or return). In the case of a 'side connection' you will
need to close the upper valve. If the problem continues
contact Your dealer.