FRÄNKISCHE profi-air 250/360 flex, Installation And Operating Instructions Manual

Page: 82 / 108

Installation and operating instructions profi-air 250/360 flex
82
8.2.3 Fault clearance E4 to E7 temperature sensors
Troubleshooting activities must be carried out by authorised and qualified personnel and in the “dead”
state of the device only. In addition, applicable local regulations and safety provisions must be complied
with.
Error message temperature sensor
Error message integrated control panel
flashing red LED
flashes four times / fresh air sensor
flashes five times / supply air sensor
flashes six times / extract air sensor
flashes seven times / exhaust air sensor
profi-air cockpit app or wireless remote control error message
E4 / fresh air sensor
E5 / supply air sensor
E6 / extract air sensor
E7 / exhaust air sensor
n
Unhinge the filter cover
n
Remove the device cover
n
Remove the control board cover
Is the sensor
connected properly
to the J9 clamp?
Check connection for
broken cable and
corrosion
Disconnect the
temperature sensor
Check the temperature sensor
resistance
2 kOhm at 25 °C
Connect the temperature
sensor properly
Replace control board Replace temperature
sensor
Cut the voltage supply
Is the resistance
of the temperature
sensor correct?
Yes No
Yes
No
Resistance table
Temperature
[°C]
Resistance value [kΩ]
–30 25.39
–25 19.40
–20 14.96
–15 11.64
–10 9.13
–5 7.20
0 5.72
5 4.57
10 3.68
15 2.99
20 2.44
25 2.00
30 1.65