Err3
What code Err3 means on a Haier washing machines, what causes it, and which part to check first.
● SEVERITY: HIGH
Haier Err3 means: Wash temperature sensor error NTC thermistor fault. The documented cause is: Failed NTC thermistor. Loose or corroded wiring connector to the thermistor. Limescale on the thermistor in hard water areas. Control board fault.
What Err3 means
Wash temperature sensor error NTC thermistor fault
The display shows Err3 and the machine stops until the fault is cleared.
What the technical documentation says
Causes documented in the technical source published by whitegoodshelp.co.uk
| DOCUMENTED CAUSE OR CHECK |
|---|
| Failed NTC thermistor |
| Loose or corroded wiring connector to the thermistor |
| Limescale on the thermistor in hard water areas |
| Control board fault |
Replacement parts
Tools you'll need
Before you open anything
Unplug the machine and close the water tap before removing any panel. Water and mains electricity sit centimetres apart inside a washing machine. If the drum still holds water, drain it from the filter first — it can be scalding.
What to check, in order
From the quickest check to the one that needs a technician.
Find a specialist
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Frequently asked questions
What does Err3 mean on a Haier?
Wash temperature sensor error NTC thermistor fault The documented cause is: Failed NTC thermistor. Loose or corroded wiring connector to the thermistor. Limescale on the thermistor in hard water areas. Control board fault.
Can I fix Err3 myself?
It depends on the part involved: Failed NTC thermistor. Loose or corroded wiring connector to the thermistor. Limescale on the thermistor in hard water areas. Control board fault. Clearing a filter or straightening a hose is within reach of anyone; anything behind a panel means mains electricity and water together — that is a job for a technician.
Does Haier use other codes on this appliance?
Yes: we document 14 other codes for Haier on this washing machines. They are listed at the bottom of this page, each with its own meaning.
Does the same code mean the same thing on other brands?
Often not. The same two characters can point to completely different faults depending on the manufacturer — always check the page for your own brand.