Hanseatic WQP8-7312D User Manual

Contents
Technical Service Manual
Dishwasher
Specification 2
Test program 24-28
Theory of parts 5-23
Function Description 3-4
Inspection 29-32
Location 5
PCB 6-7
Inlet valve 8-10
Drain pump 11-12
Heater 13-14
Washing pump 15-16
Procedure 25
Error code 26-28
Water circuit 3-4
Pressure switch 17
NTC 18-19
Flowmeter 20-21
Safety Hose 22-23
Troubleshooting 33-37
SAFETY NOTICE
This documentation is only intended for qualified technicians
who are aware of the respective safety regulations.
- 1 -

Hanseatic WQP8-7312D Specifications

General

Brand	Hanseatic
Model	WQP8-7312D
Category	Dishwasher
Language	English

Summary

Dishwasher Specifications

Component Location and Theory of Parts

PCB Theory of Parts

Inlet Valve Theory of Parts

Inlet Valve Work Principle

Inlet Valve Failure Points

Lists common failure points for the inlet valve and associated error codes.

Accessing and Inspecting the Inlet Valve

Inspect Inlet Valve

Procedures for checking the electrical and machine parts of the inlet valve.

Drain Pump Theory of Parts

Drain Pump Work Principle

Drain Pump Failure Points

Lists common issues with the drain pump and their corresponding error codes.

Accessing and Inspecting the Drain Pump

Inspect Drain Pump

Steps for checking the electric and machine parts of the drain pump.

Heater Theory of Parts

Heater Work Principle

Heater Failure Points

Lists common problems with the heater and associated error codes.

Accessing and Inspecting the Heater

Inspect Heater

Procedure to measure the resistance of the heating element.

Washing Pump Theory of Parts

Washing Pump Work Principle

Washing Pump Failure Points

Lists common issues with the washing pump and their associated error codes.

Accessing and Inspecting the Washing Pump

Inspect Washing Pump

Procedures for checking the electrical and machine parts of the washing pump.

Pressure Switch Theory of Parts

Pressure Switch Work Principle

NTC Theory of Parts

NTC Work Principle

Inspecting the NTC

Inspect NTC Resistance

Procedure to test the NTC resistance against a temperature table.

Flowmeter Theory of Parts

Flowmeter Work Principle

Accessing and Inspecting the Flowmeter

Inspect Flowmeter

Procedure to test the flowmeter's electrical output using a multimeter.

Safety Hose Theory of Parts

Safety Hose Work Principle

Accessing and Inspecting the Safety Hose

Inspect Safety Hose

Procedures for inspecting electronic and mechanical safety hoses.

Test Program Operation

How to Activate Test Program

Instructions on how to start and operate the dishwasher's test program.

Procedure of Test Program

Step-by-step breakdown of the test program sequence and descriptions.

Error Code Interpretation

How to Know Error Code Occurrence

Appliance Reaction to Error Codes

E7 Thermistor Short-Circuit Failure

E8 Diverter Valve Fault

Error Code Troubleshooting Flowcharts

E1 Error Troubleshooting Flowchart

Flowchart for diagnosing and resolving E1 error (longer inlet time).

E3 Error Troubleshooting Flowchart

Flowchart for diagnosing and resolving E3 error (longer heating time).

E4 Overflow Troubleshooting Flowchart

Flowchart for diagnosing and resolving E4 error (overflow).

E6 Thermistor Open-Circuit Troubleshooting

Flowchart for diagnosing E6 error (thermistor open-circuit).

E7 Thermistor Short-Circuit Troubleshooting

Flowchart for diagnosing E7 error (thermistor short-circuit).

E8 Diverter Valve Fault Troubleshooting

Flowchart for diagnosing E8 error (diverter valve fault).

General Troubleshooting Guide

E1 Error: Longer Inlet Time Analysis

Analysis and remedies for E1 error related to longer inlet time.

E3 Error: Heating Fault Analysis

Analysis and remedies for E3 error related to heating or washing pump faults.

E4 Error: Overflow Analysis

Analysis and remedies for E4 error related to overflow.