Error Messages In The Remote Control; Resistance Values Of The Temperature Sensor - Vaillant recoVAIR/3 SERIES Operating And Installation Manual

7 Troubleshooting
7.1

Error Messages in the Remote Control

Indication
Check/
on the
component
display
COM Err Fans turn with 20% PWM
LOCK Both fans inoperative
SAI Err* Temperature sensor outside
air
EAI Err* Temperature sensor exhaust
air
EAO Err Temperature sensor discharge
air
SAO Err* Temperature sensor fresh air
SFAN Err
EFAN Err
FILT Check all filters for soiling.
Table 7.2 Error messages on the remote control
* Error message only with installed bypass.
7.2

Resistance Values of the Temperature Sensor

o
Temperature in C
-20
-10
0
10
20
25
30
40
Table 7.3 Resistance values of the temperature sensor
36
Cause
Communication error between the PCB in the
unit and the remote control.
230 V eBUS line laid parallel in pipe or cable
channel.
Alarm input "X 14" opened.
Temperature sensor defective (interrupted or
short-circuited).
Wiring interrupted.
Temperature sensor defective (interrupted or
short-circuited).
Wiring interrupted.
Temperature sensor defective (interrupted or
short-circuited).
Wiring interrupted.
Temperature sensor defective (interrupted or
short-circuited).
Wiring interrupted.
Time for programmed filter timer expired.
Resistance in Ω
95862
54892
32510
19862
12486
10000
8060
5330
Remedy
Pull the mains plug and insert it again.
If this does not help to eliminate the error,
contact Vaillant Customer Service.
Check whether a separate switch is connect-
ed to "X 14". Check why the switch is open.If
this does not help to eliminate the error,
contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Contact Vaillant Customer Service.
Set the filter timer (in the installer level) to
RESET.
Installation Manual recoVAIR/3 0020062918_03