In brief
Fault code 369 on Atlantic Alféa means: Fault code 369 indicates an anomaly in the refrigerant pressure reading by the electronic control board. Most common cause: Pressure sensor disconnected, faulty, or pressure out of range (complete vacuum or extreme overpressure). First action: Open the outdoor unit.. Call a registered engineer if the fault returns after basic checks or involves refrigerant work (F-Gas registered engineer required).
According to the Atlantic Service Manual, the most common cause of fault code 369 is a disconnected or faulty pressure sensor, not the inverter board.
369 • Atlantic • Alféa
Fault Code 369 Atlantic: Circuit Pressure — Resolution
Fault code 369 indicates an anomaly in the refrigerant pressure reading by the electronic control board.
Source: Atlantic Service Manual · Last verified 9 September 2026
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What does fault code 369 on Atlantic mean?
Fault code 369 indicates an anomaly in the refrigerant pressure reading by the electronic control board.
Pressure sensor disconnected, faulty, or pressure out of range (complete vacuum or extreme overpressure).
Differences between product ranges
| Range | Meaning | Exclusion |
|---|---|---|
| Alféa / Excellia (air-to-water) | Abnormal gas-pressure sensor reading (connector, vacuum, overpressure) | Distinct from Err 60 (Navilink thermostat) and 356 (water flow) |
| Atlantic wall AC | Code 369 not documented on wall splits in this sheet | Alphanumeric AC codes ≠ Alféa numeric codes |
Symptoms
- Outdoor unit stops
- Error displayed on indoor unit
Safety notice
Pressure measurement and leak search are for F-Gas certificate holders only.
Diagnosis
1. Visual Inspection
- Open the outdoor unit.
- Check that the pressure sensor connector (on the copper pipe) is properly engaged on the board.
Repair and return to service — Atlantic fault 369
Validate sensor connector and pressure range on gauges. Then sensor or inverter board. A confirmed leak is F-Gas work. Not a reset.
When should you call an F-Gas engineer?
As soon as vacuum, extreme overpressure or a leak is suspected. Do not recharge by guesswork.
Affected models
- Alféa
- Excellia
Field context
Occurs after refrigerant recharge, leak repair, or sensor disconnection during outdoor unit disassembly.
Technical source data
Fault code 369 on Atlantic corresponds to a refrigerant pressure sensor reading anomaly by the inverter board. Check the sensor connection, pressure range (vacuum or overpressure), then the sensor itself before suspecting the board.
Sources
- Atlantic Service Manual
Free lookup
Check this code on other brands
Exact match
369 — Atlantic
Alféa
Fault code 369 indicates an anomaly in the refrigerant pressure reading by the electronic control board.
Source : Atlantic Service Manual
Frequently asked questions
Sensor or inverter board first on fault code 369 Atlantic?
Always validate the sensor and its wiring first: this is the most common and least costly cause.
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