Troubleshooting And Maintenance - elv ETH comfort Bedienungsanleitung

26. Troubleshooting and maintenance

Error code on
display
Battery symbol
( )
F1
F2
F3
F4
F5
At 12:00 every Saturday, the actuator performs a
weekly descaling function to prevent valve calcifica-
tion. "CAL" will appear on the display.
Problem
Battery power
too low
Valve actuator
sluggish
Adjusting range
too large
Adjusting range
too small
1 wall thermo-
stat already
taught in
4 wireless com-
ponents already
taught in
Remedy
Replace batteries
Check installation,
inspect heating
valve
Check
actuator
fastening
Check heating
valve
Teach out devices
37