Elma TP690 - T780 - T1060 H

Trouble shooting / List of malfunctions
© Elma GmbH & Co KG SM/Transsonic_LC/1104/D
17
6.4 T780 – T1060H
Malfunction 1. Check:
Pilot
lamp
ultra-
sound
2. Check:
Heating
switch
- if
lighted
3. Check:
Fuse
inter-
ference
filter
4. Check:
Fuse
printed
board
Possible
causes
Remedy
Check the unit for possible damages and traces of liquid inside (e.g. leak in the
tank, liquid/humidity entering from outside)
No ultrasound
/ weak
ultrasound
(Heating OK)
OK OK OK OK
• secondary
transformer
coil
• output
capacitor
• scorching in
transducer
system
• replace
component
• replace
compl.
printed
board
• open/
check
transd.
system
No ultrasound
(Heating OK)
OK OK OK faulty
• printed
board:
(transistors
diodes)
• replace
component
• replace
compl.
printed
board
No ultrasound
(Heating OK)
OFF OK OK OK
• interference
filter
• timer
• replace
component
• replace
compl.
interf. filter
No ultrasound
No heating
OFF OFF OK OK
• interference
filter
• mains cable
• replace
component
• replace
compl.
interf. filter
• replace
mains
cable