🌀Dryer

HEAT EXCHANGER DIRTY

Miele · Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct

Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct HEAT EXCHANGER DIRTY Error Fix: Heat Exchanger / Condenser Cleaning Required

The heat pump heat exchanger (evaporator and condenser coils) has accumulated lint between the fins, significantly reducing heat transfer efficiency. Drying times are doubled or tripled. Gently vacuum the heat exchanger surfaces using a soft brush attachment. Do not use compressed air.

warning2 fixes available✨ Free fix available

Quick Answer

Error HEAT EXCHANGER DIRTY on the Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct means: Heat Exchanger / Condenser Cleaning Required. The top-ranked community fix is “Remove and Deep Clean the Heat Exchanger Assembly” (hard difficulty, ~60 min, DIY cost: $10-$20). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · dryer

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many dryer repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $150-$250.

Other Miele Models with Error HEAT EXCHANGER DIRTY

Miele TXD 160 WP T1 Heat Pump Dryer

dryer · 2 fixes

Other Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct Error Codes

CONDENSER PUMP FAIL

Condensate Pump Failure

2 fixes

DOOR SEAL WORN

Door Gasket / Felt Seal Worn

2 fixes

DRUM BEARING WORN

Drum Support Bearing Worn

2 fixes

DRUM BELT BREAK

Drive Belt Broken or Stretched

2 fixes

F01

NTC1 Temperature Sensor — Short Circuit

2 fixes

F02

NTC1 Temperature Sensor — Open Circuit

2 fixes

F03

NTC2 Temperature Sensor — Short Circuit

2 fixes

F04

NTC2 Temperature Sensor — Open Circuit

2 fixes

People Also Ask About Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct Error HEAT EXCHANGER DIRTY

What does error code HEAT EXCHANGER DIRTY mean on a Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct?

Error code HEAT EXCHANGER DIRTY on the Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct means: Heat Exchanger / Condenser Cleaning Required. The heat pump heat exchanger (evaporator and condenser coils) has accumulated lint between the fins, significantly reducing heat transfer efficiency. Drying times are doubled or tripled. Gently vacuum the heat exchanger surfaces using a soft brush attachment. Do not use compressed air.

How do I fix error code HEAT EXCHANGER DIRTY on my Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct?

The most successful fix is "Remove and Deep Clean the Heat Exchanger Assembly" (hard difficulty, ~60 minutes). Estimated DIY cost: $10-$20. HomeMD has 2 community-ranked fixes for this error.

Is error code HEAT EXCHANGER DIRTY on a Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct error HEAT EXCHANGER DIRTY myself?

Yes — the top-ranked community fix ("Remove and Deep Clean the Heat Exchanger Assembly") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Vacuum cleaner with soft brush, Soft cleaning brush.

How much does it cost to repair Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct error HEAT EXCHANGER DIRTY?

DIY cost: $10-$20. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct have?

The Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct has 8 other known error codes, including: CONDENSER PUMP FAIL (Condensate Pump Failure), DOOR SEAL WORN (Door Gasket / Felt Seal Worn), DRUM BEARING WORN (Drum Support Bearing Worn), DRUM BELT BREAK (Drive Belt Broken or Stretched), F01 (NTC1 Temperature Sensor — Short Circuit), and 3 more.

Which other Miele models have the HEAT EXCHANGER DIRTY error?

Error code HEAT EXCHANGER DIRTY also appears on 1 other Miele model: Miele TXD 160 WP T1 Heat Pump Dryer. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct have?

The Miele Miele TWI 180 WP T1 Heat Pump Dryer with WiFiConn@ct has 8 other known error codes:

CONDENSER PUMP FAIL — Condensate Pump Failure (2 fixes)
DOOR SEAL WORN — Door Gasket / Felt Seal Worn (2 fixes)
DRUM BEARING WORN — Drum Support Bearing Worn (2 fixes)
DRUM BELT BREAK — Drive Belt Broken or Stretched (2 fixes)
F01 — NTC1 Temperature Sensor — Short Circuit (2 fixes)
F02 — NTC1 Temperature Sensor — Open Circuit (2 fixes)
F03 — NTC2 Temperature Sensor — Short Circuit (2 fixes)
F04 — NTC2 Temperature Sensor — Open Circuit (2 fixes)

Which other Miele models have the HEAT EXCHANGER DIRTY error?

Error code HEAT EXCHANGER DIRTY also appears on 1 other Miele model:

Miele TXD 160 WP T1 Heat Pump Dryer (dryer) · 2 fixes

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