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Error code reference

Haier Refrigerator Error Code HH

Control and display sensor reading is more than 99°F (high temperature alarm).

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Control and display sensor reading is more than 99°F (high temperature alarm).

First step from the service manual

When the temperature goes down to 97°F, the display status will return to normal and alarm will disappear if push SET or no action.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What HH means on a Haier refrigerator

The HH error code on a Haier refrigerator indicates that the control and display sensor is reading an internal temperature exceeding 99°F. This is a high temperature alarm condition, meaning the refrigerator compartment has risen well above safe food storage range. The code is triggered by the temperature sensor that feeds data to the main control board and display, and it activates when that sensor value crosses the 99°F threshold.

The alarm is designed to alert users before food spoilage becomes severe. The system monitors temperature continuously, and once the reading drops back down to 97°F, the display will automatically return to its normal readout. The alarm can also be dismissed by pressing the SET button, but dismissing the alarm does not resolve the underlying cause of the temperature rise. If the root cause is not corrected, the HH code will return.

Common sources of this condition include cooling system failures such as a faulty compressor, low refrigerant charge, or a blocked evaporator coil. Environmental factors like a door left ajar, a failed door gasket, or placement in a high-ambient-temperature location can also push the compartment temperature into alarm territory. The temperature sensor or control board itself may be at fault if the unit is actually cooling normally but the HH code still appears, pointing to a sensor or wiring issue rather than a true thermal problem.

Source: manufacturer service documentation.

Common causes of HH

  1. 01

    Door left open or damaged door gasket

    Wiring / connection

    A door that is not fully closed or a worn, cracked gasket allows warm ambient air to flood the compartment, rapidly raising the internal temperature. Inspect the gasket for tears or gaps and check that the door closes and seals firmly all the way around.

  2. 02

    Blocked or frozen evaporator coils

    Wiring / connection

    Ice buildup on the evaporator coils restricts airflow and reduces cooling capacity, causing compartment temperatures to climb. You may hear reduced fan noise or notice frost accumulation in the freezer section.

  3. 03

    Compressor not running or running inefficiently

    Part replacement

    If the compressor has failed or is short-cycling, the refrigerant circuit cannot move heat out of the compartment and temperatures will rise steadily. Listen for the compressor starting at the back of the unit and check whether the condenser coils are hot to the touch during operation.

  4. 04

    Low refrigerant charge

    Part replacement

    A refrigerant leak reduces the system's ability to absorb and transfer heat, resulting in poor cooling and eventually a high temperature alarm. This requires a certified technician to diagnose with manifold gauges and to recharge or repair the sealed system.

  5. 05

    Faulty temperature sensor or wiring

    Part replacement

    If the control and display sensor itself has failed or its wiring has a break or loose connection, it may report an incorrectly high temperature even when the compartment is actually cold. Confirm the actual compartment temperature with a separate thermometer to distinguish a sensor fault from a genuine cooling problem.

See the test procedure for each cause

Frequently asked questions about HH

What does HH mean on a Haier refrigerator?
HH is a high temperature alarm code indicating the control and display sensor has detected an internal temperature above 99°F. This means the refrigerator compartment is too warm to safely store food. The alarm will clear automatically once the temperature drops to 97°F, or you can press the SET button to dismiss the display. Addressing the cause of the temperature rise is necessary to prevent the code from returning.
How do I fix the HH error code on my Haier refrigerator?
Start by checking that the refrigerator door is fully closed and that the door gasket is sealing properly all the way around. Make sure the condenser coils are not clogged with dust and that there is adequate clearance around the unit for airflow. If those checks do not resolve the problem, the issue may involve the evaporator coils, compressor, refrigerant level, or the temperature sensor itself, which may require a technician to diagnose.
Will resetting my Haier refrigerator clear the HH code?
Pressing the SET button will dismiss the HH alarm on the display, and the display will also return to normal on its own once the compartment temperature drops back to 97°F. However, resetting or dismissing the alarm does not fix the underlying cause. If the cooling problem is not corrected, the compartment will warm up again and the HH code will reappear.
Is the HH error code on a Haier refrigerator a safety concern?
Yes, temperatures above 99°F inside a refrigerator represent a serious food safety risk. Perishable foods like meat, dairy, and leftovers should not be held above 40°F for extended periods. If the HH alarm has been active for more than a couple of hours, inspect food carefully and discard anything that may have been in the temperature danger zone for too long.
How much does it cost to repair a Haier refrigerator showing the HH code?
Repair costs vary widely depending on the cause. Simple fixes like cleaning condenser coils or replacing a door gasket typically cost between $20 and $100 in parts and minimal labor. A temperature sensor replacement generally falls in the $50 to $150 range including parts and labor. Compressor replacement or sealed system refrigerant repair is more involved and can range from $200 to $600 or more depending on parts availability and labor rates in your area.

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