TERMA ONE Mode D'emploi page 14

Troubleshooting
Symptom
LED diode is not on,
heating element does
not heat
LED diode pulsing:
WHITE & RED or
WHITE & YELLOW
LED TWO
diode flashes
pulsing
WHITE
(mal-
THREE
function
flashes
alert)
FOUR
flashes
FIVE
flashes
14
User manual — ONE
Possible cause Adviced action
Damaged elec- contact Your local Distributor
tronics
The radiator is 1. Check and confirm that the heating element's
not warming up output is not too low for the size of radiator.
quickly 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.
Low water level 1. May happen once or twice after switching on - this
(work in dry con- is not a malfunction;
ditions) 2. If lasts longer - check the lever of heating agent
level
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.
Temperature sen- Contact Your local Distributor
sor damaged
The radiator is 1. Check and confirm that the heating element's
not warming up output is not too low for the size of radiator.
quickly 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.