Haier Microwaves Error Codes

dE

Microwave shows dE or "door" and will not start

Door not detected as closed / door interlock error

E0

Microwave displays E0 and will not start cooking

Keypad or control panel communication fault

E1

Microwave shows E1 and will not start or stops immediately

Door switch circuit failure

E2

Microwave displays E2 and stops heating or will not start

Temperature sensor / cavity thermistor fault

E3

Microwave shows E3 and does not heat or stops mid-cycle

Magnetron overheat or thermal cut-out trip

E4

Microwave displays E4 and will not heat

Humidity sensor / steam sensor error

E5

Microwave shows E5 and stops heating or will not start

Inverter or high-voltage power supply fault (for inverter models)

E6

Microwave displays E6 and will not operate

Control board / EEPROM communication error

E7

Microwave shows E7 and beeps, no heating

Weight sensor / turntable load sensor error (for models with auto-weight features)

E8

Microwave displays E8 and stops cooking

Cooling fan or airflow error

E9

Microwave shows E9 and will not start

Turntable motor or rotation sensor error

Err

Microwave briefly shows "Err" on display and beeps, then stops

General control error / invalid input

H0

Microwave displays H0 or HO and does not heat

Humidity/temperature protection or sensor abnormality (variant code)

H1

Microwave shows H1 and beeps, cooking disabled

Overvoltage or power supply protection

H2

Microwave displays H2 and stops operation

Overheat protection / magnetron temperature fault

H3

Microwave shows H3 and will not heat

Low voltage or power supply under-voltage protection

SE

Microwave displays SE or "Sensor Error" and beeps, sensor cooking disabled

Sensor cooking system fault

Symptom

Microwave clock resets or display blanks out intermittently

Intermittent power or control board fault

Symptom

Microwave display is dim, flickering, or partially missing segments

Display module or power supply issue

Symptom

Microwave display works but it will not start when pressing Start

Start circuit / door interlock logic fault

Symptom

Microwave door will not open or is stuck closed

Door latch mechanism jammed or broken

Symptom

Microwave door will not stay closed or pops open during cooking

Door latch misalignment or worn latch components

Symptom

Microwave emits unusual odors (chemical or electrical) without visible smoke

Overheating electrical components or new-appliance off-gassing

Symptom

Microwave heats unevenly or takes longer than usual to cook

Reduced microwave output or distribution issue

Symptom

Microwave interior is sparking or arcing during use

Cavity arcing due to metal, damage, or contamination

Symptom

Microwave interior light does not turn on, but unit heats normally

Cavity lamp failure

Symptom

Microwave interior paint is peeling or rust is visible

Cavity coating deterioration

Symptom

Microwave intermittently stops heating during cooking, then resumes or restarts

Intermittent high-voltage or thermal protection fault

Symptom

Microwave is very noisy (rattling or vibration) during operation

Cabinet vibration or loose components

Symptom

Microwave keypad buttons do not respond or respond intermittently

Membrane keypad failure

Symptom

Microwave light, fan, and turntable run when door is closed, even without pressing Start

Door interlock switch miswiring or welded relay

Symptom

Microwave makes grinding or scraping noise when turntable rotates

Mechanical turntable drive noise

Symptom

Microwave makes loud buzzing or humming noise while heating

Noisy high-voltage component or magnetron

Symptom

Microwave over-the-range cooktop light does not work

Cooktop lamp failure (OTR models)

Symptom

Microwave over-the-range vent fan does not run or runs only at one speed

Ventilation fan or control fault (OTR models)

Symptom

Microwave produces burning smell or smoke during operation

Overheating or burning of internal components or food residue

Symptom

Microwave runs but does not heat food at all

High-voltage system failure (magnetron / transformer / inverter)

Symptom

Microwave runs with door open (light, fan, or turntable operate when door is open)

Severe door interlock failure

Symptom

Microwave trips the household breaker or blows fuse when starting

Short circuit or high inrush current in microwave

Symptom

Microwave turntable does not rotate, but heating and other functions work

Turntable drive failure

Symptom

Microwave will not start at all (no lights, no display)

No power / primary power circuit failure