Malfunctions, 3 displays and malfunctions – Eberspacher Calltronic User Manual
Page 12

12 | VehiCLe heATeRs – TeChniCAL DOCuMenTATiOn
DisPlays
DEscriPtioN
rEmEDial actioN
button lights up
heater is switched on.
button does not flash
Display is deactivated.
keep button pressed for at least 5 seconds 
– display is activated.
malFuNctioNs
DEscriPtioN
rEmEDial actioN
Calltronic does not respond to 
calls, although the phone number 
is stored
phone has a secret number or the phone number is 
suppressed.
Contact network operator.
Activate phone number display
siM card has expired or it has been deactivated by 
the network operator, no prepaid credits.
Check siM card in the mobile phone, contact net-
work operator or load prepaid card.
After sending the sMs, Calltronic 
reports: “unknown message” 
Faulty sMs
Check sMs input command, see
page 9
.
no tone feedback
phone number of connection used is not stored in 
the Calltronic
save phone number
no sMs feedback for sent input 
commands
Activate feedback function, see
if the feedback function is activated, check credit 
on the siM card and if necessary load.
Calltronic does not respond to 
sMs command
siM card has expired or it has been deactivated by 
the network operator, no prepaid credits.
Check siM card in the mobile phone, contact net-
work operator or load prepaid card.
3 DispLAys AnD MALFunCTiOns
