Fridge
E1
The E1 error code on a Hisense fridge indicates a fault with the internal temperature sensor — specifically, the appliance cannot read the fridge compartment temperature correctly. While it sounds alarming, it is not always a catastrophic failure and there are several things you can safely check yourself before calling an engineer. In this guide, we’ll walk you through exactly what E1 means, the most common causes on Hisense fridges and fridge-freezers, and the step-by-step fixes you can try at home today.
What does this error mean?
The E1 error code on a Hisense fridge or fridge-freezer means the appliance has detected a fault with the fridge compartment temperature sensor (also called the NTC thermistor or ambient sensor). This small electronic component continuously measures the air temperature inside the fridge and feeds that data back to the control board, which then decides when to run the compressor and fans. When the sensor sends a reading that is outside the expected range — either because it has failed, become disconnected, or is being affected by another fault — the control board cannot regulate the fridge temperature safely and displays E1 to alert you. In plain terms: your fridge has lost its ability to accurately ‘feel’ how cold it is inside, so it has flagged the problem rather than risk your food spoiling silently.
Est. repair cost
£8–£20 for a DIY NTC thermistor replacement; £80–£180 for a professional repair including call-out and labour; up to £200–£250 if a control board replacement is required
🔍 Likely causes
🛠️ Step-by-step fix
Step 1 — Perform a hard reset first: Unplug the fridge from the wall socket, wait a full 10 minutes, then plug it back in. This clears any temporary electrical glitch from the control board. If the E1 code does not return within 30 minutes, a power surge was likely the culprit and no further action is needed.
Step 2 — Check and clear the fridge interior: Remove all food and shelving, and carefully inspect the inside rear and side walls for excessive ice or frost build-up. If you can see thick ice (more than 5mm), the sensor may be encased in frost.
Step 3 — Manually defrost the fridge if needed: If frost build-up is present, leave the fridge unplugged with the door open for 24–48 hours with towels on the floor to catch meltwater. Do not use a hair dryer or sharp tools to speed this up as you risk damaging the liner or sensor wiring. Once fully defrosted, plug the fridge back in and monitor for 30 minutes to see if E1 returns.
Step 4 — Inspect the door seal: Close the fridge door on a piece of paper and try to pull it out. If it slides out easily with no resistance, your door gasket is not sealing properly. A damaged seal allows warm air in, causes frost build-up, and can trigger E1. Replacement Hisense door seals cost £15–£35 from UK appliance parts suppliers such as eSpares or 4ourhouse and can be fitted by a competent DIYer using just a screwdriver.
Step 5 — Locate the temperature sensor: On most Hisense fridge models (including the RF, RB, and RQ ranges), the NTC thermistor is clipped to the rear wall or evaporator housing inside the fridge compartment. It is typically a small plastic probe attached to a thin wire. You can usually access it without opening any electrical panels — simply removing the back interior cover (held in place by two or three screws) is sufficient.
Step 6 — Check the sensor wiring visually: Without touching any electrical components, visually inspect the wire leading from the sensor. Look for obvious signs of damage: fraying, kinking, ice damage, or a connector that has clearly pulled apart. If you can see a disconnected push-fit connector, ensure the fridge is unplugged, then firmly press it back together until it clicks. Plug the fridge back in and check if E1 clears.
Step 7 — Test the NTC thermistor with a multimeter (competent DIYers only): If you are comfortable using a multimeter, unplug the fridge and disconnect the sensor connector. At room temperature (around 20°C), a healthy Hisense NTC thermistor should read approximately 10,000 ohms (10kΩ) of resistance. A reading of zero (short circuit) or infinite resistance (open circuit) confirms the sensor has failed and needs replacing. Replacement sensors compatible with Hisense fridges cost £8–£20 online — search using your full model number found on the data plate inside the fridge door.
Step 8 — Replace the NTC thermistor if confirmed faulty: With the fridge unplugged, unclip the old sensor from its mounting point, disconnect the wiring connector, and fit the new sensor in reverse order. Ensure the wiring is routed away from any moving parts or areas prone to ice build-up before replacing the interior cover. Plug the fridge back in and confirm the E1 code has cleared.
Step 9 — If E1 persists after all the above steps: Do not attempt to open the main control board housing or interfere with the refrigeration circuit. A persisting E1 after sensor replacement points to a control board fault, which requires a qualified appliance engineer with the correct diagnostic equipment.
📞 When to call a professional
You should call a qualified appliance engineer if: the E1 error returns immediately after a hard reset and there is no visible frost build-up; the sensor wiring appears physically damaged inside the appliance body rather than at the connector; you have replaced the NTC thermistor and E1 still displays (indicating a likely control board fault); or you are not comfortable removing interior panels or using a multimeter. When you call, tell the engineer: ‘My Hisense fridge is showing an E1 error code, which I understand relates to the fridge compartment temperature sensor. I have already performed a hard reset and manually defrosted the unit, but the code has returned.’ This will save diagnostic time and potentially reduce your call-out fee. Look for an engineer registered with a recognised trade body such as the Domestic Appliance Service Association (DASA) or Trustmark. Avoid engineers who cannot give you a fixed call-out rate upfront.
⚖️ Repair or replace?
If your Hisense fridge is under 5 years old, a repair almost always makes financial sense. The most common fix — replacing the NTC thermistor — is inexpensive (£8–£20 for the part) and straightforward. Even a professional repair involving a control board replacement is typically £100–£200, which is significantly less than a new fridge of similar size. Hisense has grown substantially in the UK market and spare parts are generally well-stocked through suppliers like eSpares, 4ourhouse, and ApplianceSparesParts.co.uk, so parts availability is not usually a concern for models up to 8 years old. If your fridge is over 8–10 years old and the repair quote exceeds £150, it is worth comparing that against a new equivalent Hisense or similar brand fridge, which typically costs £250–£500 in the UK. As a rule of thumb: if the repair costs more than 50% of the replacement cost, replacing is the smarter long-term choice.