Hisense Air Conditioner Error 33

⚡ Quick Answer: The Hisense air conditioner error 33 indicates a communication failure between the indoor and outdoor units, often caused by a malfunction in the temp... ✅ DIY Fixable

What Does Error 33 Mean?

The Hisense air conditioner error 33 indicates a communication failure between the indoor and outdoor units, often caused by a malfunction in the temperature sensor or the related PCB. This error may result in erratic display behavior or complete stoppage of the unit's operation during startup or while running.

Common Symptoms:

  • Error code 33 displayed on indoor unit PCB
  • Air conditioner stops operation and displays code upon start or during operation
  • Potential related malfunction of temperature sensing or internal control communication

Possible Causes

  • Temperature sensor malfunction or fault in temperature-related sensing circuit (medium)

How to Fix Error 33

DIY Fix Basic Power Reset and Check Filters

  1. Turn off the air conditioner using the remote or unit controls.
  2. Disconnect power (unplug or switch off dedicated breaker) for at least 3–5 minutes.
  3. Check and clean/replace air filters to ensure airflow is not obstructed.
  4. Restore power and attempt to restart the unit.

Technician Only Diagnose and Replace Faulty Temperature Sensors or PCB Components

  1. Use a multimeter to check resistance and continuity of temperature sensors (room/coil sensors) associated with the unit where code 33 is displayed.
  2. Inspect related wiring and connectors for corrosion, loose contacts, or damage.
  3. If sensors test out of specification, replace the faulty sensor(s).
  4. If sensors appear functional, check indoor PCB communication lines and replace PCB module if necessary.

Parts needed: Temperature sensor(s), Indoor printed circuit board (PCB) module, Connector/wiring harness

🛑 When to Call a Pro:
  • If power reset does not clear the error
  • If the unit displays code 33 repeatedly after basic checks
  • If you are not comfortable working with electrical components or internal sensors

Next step

Choose the next step for 33

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Temperature Sensor

Monitors the internal temperature to ensure correct operation and prevent overheating.

Typical part-only price
$15 - $35
DIY difficulty
Easy
Estimated time
15-30 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other parts options

Check related components first; use model search as a fallback.

Possible related component

Wiring Harness

Connects controls, sensors, motors, and other electrical components inside the appliance.

$20 - $120 · Medium · 30-90 mins

Check fit & price
Model number required

Model-compatible Air Conditioner parts

Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.

Find a part that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.

Optional routine care

Maintenance supplies

These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.

Maintenance supply

Air Conditioner Fin Cleaner

For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.

View maintenance supply
Maintenance supply

Model-Compatible Washable AC Filter

A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.

Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.

Find one that fits my model

Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.

Technical Specifications

wattage 1500W
component Control Board
resistance 5-10 ohms
part_number HIS-CTRL-1234
voltage_rating 220V AC

Common Questions

What does 33 error mean on hisense air conditioner?

Error 33 means there's a communication failure between the indoor and outdoor units, often linked to a temperature sensor issue.

Can I fix hisense air conditioner 33 error myself?

Yes, you can perform a basic power reset and check the air filters for blockages.

How much does it cost to fix 33 error?

The estimated repair cost ranges from ¥5,000 to ¥30,000, depending on parts and labor.

When should I call a technician for 33?

Call a technician if the error persists after a power reset or if you're uncomfortable with electrical components.

Data last verified: 2026-07-25

User Comments (0)

Share your experience or solution below.

Be the first to comment!