The modern Siemens dishwashers have a self-diagnostic mode which assumes that machine stops due to a malfunction, and as a result, displays an error code.
Experts group these error codes into two and the first category are those that the user can repair on his own. Mostly, these errors refer to water gaining and draining.
Water draining and gaining problems
This error implies that water doesn’t reach a particular level within the set time. This is usually due to:
- Aquastop system failure;
- Dysfunctional drain pump;
- Damages in the liquid valve;
- Un-operational water level sensor;
- Clogging in water supply filters.
This occurs if water overflows thereby causing blockage or breakdown of the water sensor tube. Also, it could be due to failure in the water supply valve therefore water enters the dishwasher at an uncontrolled level.
E8 signifies the little amount of collected water. At the same time, the dishwasher’s heating element doesn’t receive a signal to turn on and the circulation pump cannot run it out due to reduced pressure.
E15 appears when the Aquastop protection system is triggered and water has entered into the machine`s tray. To eradicate this error code, you must drain the system and repair any leakage in the drainage system.
E16 error code shows on the display if there is a water gain. This is usually caused by; increased foaming due to an overdose of detergent, or malfunction of the priming valve or the pressure switch.
E17 occurs if the water is collected in the machines reservoir and its meant to signal the ineffective functioning of the water flow sensor. To repair it, check water pressure or replace the sensor if necessary.
E21 appears if water does not drain, or the drain pump of the dishwasher is blocked. It also implies that the pump is clogged or worn out.
This error code signifies a fault in water drainage could be as a result of:
- drain hose bending;
- Sewerage obstruction
- Clogging of the drain hose or the drainage filter;
The other category relates to water heating and sensors. These include error code E01, E02, E03, E04, E06, E09, E11, E14, E18, and E27. When repairing these errors, ensure you disconnect electricity and consult an expert for any complicated task. If the sensor, switch, or any other heating element is damaged or worn out, it advisable to replace them rather than do uninformed repairs.