Hisense Refrigerator Error ER

⚡ Quick Answer: The Hisense Refrigerator error code ER indicates a communication fault between control boards, often leading to improper cooling and unusual noises. T... ✅ DIY Fixable

What Does Error ER Mean?

The Hisense Refrigerator error code ER indicates a communication fault between control boards, often leading to improper cooling and unusual noises. This error may arise after a power interruption and is characterized by the display showing 'ER' instead of the temperature. A malfunction in the evaporator fan could also contribute to these issues.

Common Symptoms:

  • Display shows “ER” instead of temperature
  • Refrigerator/freezer not cooling properly
  • Lights or display issues accompanying the error
  • Triggered after power interruption

Possible Causes

  • Communication fault between control boards (medium)
  • Possible freezer temperature sensor or wiring fault (low)

How to Fix Error ER

DIY Fix Power reset and basic checks

  1. Unplug refrigerator from power outlet for at least 5 minutes.
  2. If not easily unplugged, turn off the dedicated circuit breaker for the fridge for 5 minutes.
  3. Plug the fridge back in or restore breaker and observe if the ER message clears.
  4. Ensure no immediate visible damage to wiring around the display panel.

Technician Only Inspect control boards and communication wiring

  1. Disconnect power and access rear control board area.
  2. Inspect wiring harnesses between main control board and display/control panel for loose, damaged, or corroded connectors.
  3. Test communication signals between boards with a multimeter as per service manual.
  4. Replace defective control board(s) if communication cannot be reestablished.

Parts needed: Main control board, Display/control panel board, Wiring harness

🛑 When to Call a Pro:
  • If ER code persists after reset and basic user checks
  • If unusual noises or temperatures continue indicating cooling failure
  • If internal wiring damage is suspected or boards need replacement

Technical Specifications

wattage 15W
component Evaporator Fan Motor
resistance 50-100 ohms
part_number Hisense 3105A
voltage_rating 120V AC

Common Questions

What does ER error mean on Hisense Refrigerator?

The ER error indicates a communication fault between control boards, resulting in cooling issues.

Can I fix Hisense Refrigerator ER error myself?

Yes, you can try a power reset by unplugging the fridge for 5 minutes.

How much does it cost to fix ER error?

Repair costs range from ¥15,000 to ¥55,000, depending on parts and labor.

When should I call a technician for ER?

Call a technician if the ER code persists after a reset or if unusual noises and temperatures continue.

Data last verified: 2026-07-07

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