48
Code
Cause
Measure
F10
Extract air tempera-
ture sensor faulty.
Check sensor leads to the control PCB.
Check sensor; replace if necessary.
FILTER
CHECK
No fault
; the appli-
ance continues to
operate.
Filter cleaning or
replacement is
required.
Clean the Vitovent filter mats in accordance with the
details on page 38 or replace them and/or replace
filters in the extract air valves.
Repairs
Pressure drop curve for extract air and outdoor air temperature
sensor
For sensor connections to the control
PCB, see page 50, sensor element
Pt500.
-20
540
560
580
600
620
640
Resistance in
Ω
0
20
40
60
80
Temperature in °C
520
510
500
490
Troubleshooting
Diagnosis at the remote control
(cont.)
5608 999 GB