Haier Oven Error Codes: E1 to E23 and What They Point To

Haier oven error codes run from E1 to E23, and almost every one of them is an internal fault that Haier tells you to book a service for. The codes split into five groups: communication between boards (E1, E9, E12, E02), control selectors (E2, E3), temperature sensors and probes (E4, E5, E7, E8, E10, E11, E21, E22, E01), heat and heating (E6, E13, E18), and display or signal faults (E14, E15, E16, E17, E19).

Two entries on Haier's own list are worth knowing about before you start searching: E20 and E23 are marked "Not Used". If a website tells you what E20 means on a Haier oven, it is inventing it.

The official Haier oven fault code list

Code	What Haier says it means
E1	Display board communication error
E2	Cooking selector fault
E3	Function selector fault
E4	Main board NTC open circuit
E5	Main board NTC short circuit
E6	Main control board too hot
E7	Temperature probe open circuit (secondary oven)
E8	Temperature probe short circuit (secondary oven)
E9	Communication error with WiFi module
E10	Main control board temperature probe open circuit
E11	Main control board temperature probe short circuit
E12	Board communication error
E13	Heating element fault
E14	Main control board signal fault
E15	Main board door lock signal fault
E16 / E17	Display fault
E18	Display board hot
E19	Display board EPROM fault
E20	Not used
E21	Main board meat probe fault (open circuit)
E22	Main board meat probe fault (short circuit)
E23	Not used
E01	Temperature sensor error
E02	Communication error

Haier's recommended action for every code on this list is to book a service. Source: Haier's official wall oven fault codes article. Code sets differ between wall ovens, built in ovens and freestanding cookers, so check your model's documentation if something here does not match.

E1 and E01 are not the same code

This trips people up, and it is easy to miss. Haier's table contains both a single digit series (E1, E2, E3 and up) and a leading zero series (E01, E02). They mean different things: E1 is a display board communication error, while E01 is a temperature sensor error.

So when you look at the display, note whether there is a zero in it. Searching for the wrong one sends you down a completely different diagnostic path.

What each group actually means

Temperature sensors and probes (E4, E5, E7, E8, E10, E11, E01). This is the largest group, and the words "open circuit" and "short circuit" tell you what the control board is seeing. Open circuit usually means a broken wire or a disconnected sensor. Short circuit usually means a damaged sensor or wiring touching where it should not. An oven that cannot read its own temperature will refuse to heat rather than guess, which is the safe behaviour.

Meat probe (E21, E22). Same open and short circuit pattern, but for the plug in meat probe socket. Worth knowing because the oven itself may be fine. If you have a probe plugged in, unplug it and see whether the code clears.

Heat related (E6, E13, E18). E13 is a heating element fault. E6 and E18 are different: they say a board is too hot. Electronics live near a box that reaches high temperatures, so cooling matters. Blocked ventilation around a built in oven, or an oven installed in a cabinet without the correct clearances, can contribute.

Communication (E1, E9, E12, E02). Boards that cannot talk to each other. E9 is the most benign of the set, because it is only the WiFi module. Your oven will still cook with a WiFi fault, you just lose the app features.

Door lock (E15). A door lock signal fault. The lock matters most during a pyrolytic self clean cycle, when the oven deliberately locks itself at very high temperature.

Before you book a service

There is no official homeowner fix for these codes, but three checks cost nothing:

• Unplug the meat probe if one is connected, for E21 or E22.
• Try one power cycle at the breaker. A single code that never returns may have been a glitch. A code that comes straight back is a real fault.
• Check ventilation around a built in oven for the board temperature codes, and make sure nothing is blocking the vents.

If your oven is not showing a code at all but simply will not get hot, that is a different diagnosis. Our guide on an oven that is not heating covers elements, igniters and sensors. If the oven will not switch off, treat that as a safety issue and see what to do when an oven will not turn off.

Getting it fixed

If you are in Fairfield or anywhere in Solano County, California, we can connect you with a local technician who works on Haier ovens. Our oven repair page explains how the referral works.

Frequently asked questions

What does E1 mean on a Haier oven?

Haier lists E1 as a display board communication error. Note that E01, with a zero, is a different code and means a temperature sensor error.

What is E20 on a Haier oven?

Nothing. Haier's own fault code table marks E20 and E23 as "Not Used". Any page that assigns them a meaning is guessing.

Can I fix a Haier oven error code myself?

Haier's published action for every code on its wall oven list is to book a service. You can unplug a meat probe for E21 or E22, try a single power cycle, and check ventilation, but the repairs themselves need a technician.

Does E9 stop my oven working?

E9 is a communication error with the WiFi module. The cooking functions are separate from the WiFi module, so you lose the connected features rather than the oven.

What should I tell the technician?

The exact code including any leading zero, your model number from the data plate, when it appears, and whether the oven heats at all.

Related guides: Haier induction cooktop error codes, Haier dishwasher error codes, and Frigidaire oven F10.