Electrolux T5190LE Service Manual page 80

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12:14 GAS ERROR PRESS GAS RESET BUTTON
The error code is shown if input GAS ERROR is activated. This means that no flame has been detected by the gas
control box.
The metal probe of the flame sensor generates an electrical current when exposed to the burner's flame. This signal
is detected by the ignition control module which, in turn, cuts off the gas valve immediately if the sensor does not indi-
cate flame within 3 attempts at each 10 seconds. The integrity of the sensor's electrical connection is, therefore, crit-
ical to proper operation of this system. When the gas control box is in error mode, a red LED is active on the gas
control box. The gas control box also trigs input GAS ERROR on the control system , which generates the error code.
The control system sends a reset signal to the gas control box via output GAS ERROR RESET by a short press on
the start button or service button (depending on market and segment). When the gas control box receive a reset
command it removes the error. The control system will automatically restart the program when the error is removed
from the gas control box and when heat is allowed (vacuum needed) the gas control box will try to ignite the gas
again.
A long press on the control knob/start button will make the control system reset and ongoing program will be ended.
The gas error can also be reset at the gas control box. The machine will automatically restart when the error is
restored.
The error code can be trigged if:
• The gas control box fails to ignite. Check the gas supply and nozzle pressure.
If the gas control box do not have a gas error but the control system does, check the harness, connectors and func-
tions by reading the electrical schematic and by using the SHOW INPUTS menu when the machine is in service mode.
12:15 NO VACUUM
The error code is shown if the input VACUUM is not activated within set time in parameter TIMEOUT VACUUM.
The error code is reset from the control system by a short press on the control knob/start button. A long press on the
control knob/start button will make the control system reset and ongoing program will be ended.
The time is defined in Config. 1 parameter TIMEOUT VACUUM.
The error code can be trigged if:
• The fan is not operating or blows in the wrong direction.
• The airflow is obstructed.
• The vacuum switch sensor or hose is disconnected.
• The lint drawer is open, etc.
Check the harness, connectors and functions by reading the electrical schematic and by using the SHOW INPUTS
and ACTIVATE OUTPUTS menus when the machine is in service mode.
12:16 VACUUM SWITCH SHORTED
The error code is shown if the input VACUUM was already activated when a program was started.
The error code is reset from the control system by a short press on the control knob/start button. A long press on the
control knob/start button will make the control system reset and ongoing program will be ended.
Recommended actions:
1. Check the vacuum switch/pressure sensor, harness, connectors and functions by reading the electrical schematic
and by using the SHOW INPUTS menu when the machine is in service mode.
12:17 AIRFLOW OBSTRUCTED MAINTENANCE NEEDED
The error is shown if input INTERNAL FILTER is activated.
Error can be triggered by clogged internal filter, damaged vacuum switch or harness.
Recommended actions:
1. Check and clean internal filters, see maintenance manual.
2. 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.
3. If permanent clean heat pump box.
Service Manual