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Heat pumps · Error codes · Samsung
E441Samsung

E441 on a Samsung heat pump: Forbid Cooling Mode when Outdoor Temperature is Low 10°C

Short answer

On a Samsung heat pump, E441 means: Forbid Cooling Mode when Outdoor Temperature is Low 10°C. The heat pump keeps running with some functions stopped. The wording differs by model range — each is shown below.

Reviewed 23 September 2026 · 4 sources

What it means

On the EHS Mono HT Quiet (AE***BXYD*G)

The manual says: Forbid Cooling Mode when Outdoor Temperature is Low 10°C.

Part involved: Operating range control (outdoor temperature).

When it shows: Unit self-diagnosis: Forbid Cooling Mode when Outdoor Temperature is Low 10°C.

Likely causes:

  • Operation mode blocked because outdoor temperature is outside the permitted range for that mode; may also be a setting or outdoor sensor fault.
  • Engineer checks per Samsung service manual: Check the operation setting state and outdoor temperature sensor.

On the EHS Mono R290 (AE***CXYD*K and pump-integrated AE***CXYB*K)

The manual says: Forbid Cooling Mode when Outdoor Temperature is Low 10 ℃.

Part involved: Operating range control (outdoor temperature).

When it shows: Unit self-diagnosis: Forbid Cooling Mode when Outdoor Temperature is Low 10 ℃.

Likely causes:

  • Operation mode blocked because outdoor temperature is outside the permitted range for that mode; may also be a setting or outdoor sensor fault.
  • Engineer checks per Samsung service manual: Check the operation setting state and outdoor temperature sensor.

On the EHS Mono R32 (AE***RXYD*G)

The manual says: Cooling operation blocked (outdoor temperature under 9°C).

Part involved: Operating range control (outdoor temperature).

When it shows: Unit self-diagnosis: Cooling operation blocked (outdoor temperature under 9°C).

Likely causes:

  • Operation mode blocked because outdoor temperature is outside the permitted range for that mode; may also be a setting or outdoor sensor fault.
  • Engineer checks per Samsung service manual: Check the operation setting state and outdoor temperature sensor.

On the EHS Split Generation 4 (AEX/AEN, 2014)

The manual says: Cooling operation is not available since the outdoor air temperature is lower than -15°C.

Part involved: Operating range control (outdoor temperature).

When it shows: Unit self-diagnosis: Cooling operation is not available since the outdoor air temperature is lower than -15°C.

Likely causes:

  • Operation mode blocked because outdoor temperature is outside the permitted range for that mode; may also be a setting or outdoor sensor fault.
  • Engineer checks per Samsung service manual: Check the operation setting state and outdoor temperature sensor.

Is it safe?

Does the heat pump stop?Partly
SeverityWarning

The heat pump keeps running with some functions stopped.

Resetting itself: yes - clears when conditions return within range.

Manual reset: not required.

What you can check

  • Note the full error code shown on the controller; check the heat pump breaker/isolator in the consumer unit is ON; check thermostat/timer and controller operating-mode settings; note the outdoor temperature at the time; the code should clear when temperature returns within range.

What the engineer will check

  • Check the operation setting state and outdoor temperature sensor. Any work inside casings, on PCBs, wiring, sensors, pumps, valves or refrigerant is engineer-only.

Who to ask for: Heat pump engineer (only if persistent).

Certification: None specific.

What you might notice

What owners and engineers report

7 owner and engineer reports mention this.

  • No heating on the EHS Mono HT Quiet (AE***BXYD*G): 1 report
  • No heating on the EHS Mono R32 (AE***RXYD*G): 6 reports

Sources

A code explains what the controller detected, not a confirmed root cause.

Reviewed: 23 September 2026