All Technibel error codes
This page gathers Technibel error codes sorted by type of malfunction: what each code means, its likely causes, and what you can safely check before calling a professional.
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The Technibel codes on this page, grouped by type of malfunction.
Temperature sensor — Technibel
These codes indicate a sensor that’s no longer returning a consistent value. The issue is almost always the sensor itself or its connector, rarely the unit.
Code E1Medium severityair-to-air
Outdoor unit malfunction
Possible causes
- Fault reported by the outdoor unit (check its own code)
Affected models: GRK, MAFG, MRG, MAGG
This issue requires a qualified technician. Do not open the unit.
Code E2Medium severityair-to-air
Condensate drainage system fault
Possible causes
- Faulty lift pump
- Water level above safety threshold
- Blocked drainage
Affected models: GRK, MAFG, MRG
This issue requires a qualified technician. Do not open the unit.
Code E3Medium severityair-to-air
Indoor/outdoor unit communication fault
Possible causes
- Faulty or poorly connected link cable
- No communication for 30 seconds
Affected models: GRK, MAFG, MRG, MAGG
This issue requires a qualified technician. Do not open the unit.
Code E4Medium severityair-to-air
Indoor coil sensor fault (faulty or disconnected)
Possible causes
- Faulty indoor coil sensor
- Disconnected sensor
Affected models: GRK, MAFG, MRG
This issue requires a qualified technician. Do not open the unit.
Fan — Technibel
The fan releases or captures heat. If it’s blocked or faulty, pressure rises and triggers a shutdown.
Code E8Medium severityair-to-air
Incompatible indoor/outdoor unit pairing
Possible causes
- Incompatible units
- Incorrect indoor/outdoor combination
Affected models: GRK, MAFG, MRG
This issue requires a qualified technician. Do not open the unit.
Code E9Medium severityair-to-air
Outdoor fan motor fault
Possible causes
- Faulty outdoor fan motor
- Foreign object
- Faulty capacitor
What you can check
- Check for obstructions
- Cut power for 10 minutes, then restart
Affected models: GRK, MAFG, MRG, MAGG
This issue requires a qualified technician. Do not open the unit.
All Technibel codes published on the site
This list updates automatically whenever a new guide is added.
Technical information provided for guidance only, based on manufacturer documentation and field feedback. It does not replace a diagnosis by a qualified professional. Found an error on this page? Report it.