Siemens Washing Machine: not heating

Professional Repair Guide

What is this symptom?

Is your Siemens washing machine not heating water during cycles? If your clothes remain cold and error codes like E05 or E19 appear, it might be due to a faulty heating element, a malfunctioning temperature sensor, or loose wiring. Understanding these issues can help you identify the problem and seek the right solution.

Urgency: Medium

Important Tips for Siemens Models

  • Siemens displays specific heating circuit faults such as E05 (heating circuit fault) and E19 (heating time exceeded) which typically indicate heater or heating circuit issues.

Possible Causes

Faulty heating element

How to Identify: Water stays cold on hot wash cycles; multimeter test shows no continuity; potential error codes (e.g., E05, E19 related to heating circuit fault on Siemens displays. (TechFaultFix

Part: Heating element

NTC temperature sensor or thermostat malfunction

How to Identify: Incorrect temperature readings, inconsistent heat, multimeter tests out of expected resistance range; may trigger heating faults. (TechFaultFix

Part: Temperature sensor / thermostat

Loose or burnt wiring at heater terminals

How to Identify: Visible burnt connectors or loose wiring near the heater assembly; intermittent heating behavior. (TechFaultFix

Part: Internal wiring

Faulty control board heater relay

How to Identify: No power to heating element despite intact element and correct sensor readings; heater doesn’t activate. (TechFaultFix

Part: Control board (heater relay)

DIY Solutions

Check wash cycle settings

Easy 5 minutes
  1. Verify selected cycle supports heated wash
  2. Ensure temperature setting is set for warm/hot rather than cold
⚠️ Safety First: No electrical disassembly

Inspect wiring and heating element continuity

Moderate 30–60 minutes
Tools Needed: Multimeter, Screwdriver set
  1. Unplug machine and remove appropriate access panel
  2. Locate heating element terminals and temperature sensor connections
  3. Visually inspect for burnt or loose wires
  4. Measure resistance across heating element; open circuit indicates failure
⚠️ Safety First: Disconnect power before opening panels

Professional Repairs

Replace heating element

Estimated Cost: $100 - $250

Replace temperature sensor/thermostat

Estimated Cost: $60 - $150

Control board repair/replacement

Estimated Cost: $150 - $400

When to Call a Professional

Repeated error codes related to heating (e.g., E05, E19) on Siemens display
Multimeter diagnostics confirm part failure or if uncomfortable performing internal checks
Visible burns, smoke smell, or electrical fault indicators

Preventive Maintenance

  • Run periodic descaling or maintenance cycles: Limescale buildup on heating element and sensors, prolonging heater life
    Frequency: every 3–6 months
  • Check and clean inlet filters: Water flow issues that can stress heating circuit
    Frequency: every 3 months

Frequently Asked Questions

Why is my Siemens Washing Machine not heating?
Common causes include a faulty heating element, NTC sensor malfunction, or loose wiring.
How do I fix Siemens Washing Machine not heating myself?
Check wash cycle settings and inspect heating element continuity for issues.
How much does it cost to fix not heating?
Professional repairs range from $100 to $400, depending on the issue.
When should I call a technician for not heating?
Call a technician if DIY troubleshooting does not resolve the issue or if you're unsure.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

65%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Faulty heating element
  • Defective temperature sensor (thermistor)
  • Malfunctioning control board

User Suggested Solutions

  1. Test and replace the heating element. Unplug the machine, access the heating element by removing the back panel, use a multimeter to check continuity. If faulty, replace with a new element.

  2. Check and replace the temperature sensor. Unplug the machine, locate the thermistor, test its resistance with a multimeter. If it’s out of range, replace it.

  3. Inspect and repair the control board. Unplug the machine, remove the control board, check for burnt components or loose connections. Repair or replace as necessary.

Analysis based on 1 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Siemens washing machine doesn't always heat up

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