Electrolux T5675 Service Manual page 128

128
12:3 INLET AIR SENSOR - OPEN
The error code is shown if the analog input INLET AIR TEMP. (PT100) is reading a resistance of
more than approximately 185 Ω. Probably caused by broken PT100 sensor or wiring.
If the inlet air temperature in the SHOW INPUTS menu show a temperature of 222 °C the inlet air
sensor is considered open.
When the inlet air sensor is restored the error code is automatically reset and the ongoing program
will continue.
A long press on the control knob/start button will make the control system reset and ongoing
program will be ended.
The error code can be trigged if:
• The sensor, harness or connector is broken. The sensor shall measure around 110 Ohm in room
temperature, see table. (Measure direct over the sensor connectors).
If the measure of inlet air sensor is OK, but there is still an error code:
• Check the harness, connectors and functions by reading the electrical schematic and by using
the SHOW INPUTS menu when the machine is in service mode.
Temp - Sensor resistance
0°C / 32°F - 100 Ω
20°C / 68°F - 107 Ω
30°C / 86°F - 112 Ω
200°C / 392°F - 176 Ω
12:4 INLET AIR SENSOR - SHORT-CIRCUITED
The error code is shown if the analog input INLET AIR TEMP (PT100) is reading a resistance of
less than 100 Ω. Probably caused by broken PT100 sensor or damaged wiring.
If the inlet air temperature in the SHOW INPUTS menu show a temperature of 0 °C the inlet air
sensor is shorted.
When the inlet air sensor is restored the error code is automatically reset and the ongoing program
will continue.
A long press on the control knob/start button will make the control system reset and ongoing
program will be ended.
The error can be trigged if:
• The sensor, harness or connector is shorted. The sensor shall measure around 110 Ohm in room
temperature, see table. (Measure direct over the sensor connectors).
If the measure of inlet air sensor is OK, but there is still an error code:
• Check the harness, connectors and functions by reading the electrical schematic and by using
the SHOW INPUTS menu when the machine is in service mode.
Temp - Sensor resistance
0°C / 32°F - 100 Ω
20°C / 68°F - 107 Ω
30°C / 86°F - 112 Ω
200°C / 392°F - 176 Ω
Troubleshooting