IE:00044 on a SolaX Power SolaX X1-Boost G4: PVConnDirFault - PV Direction Fault
Short answer
On a SolaX Power inverter, IE:00044 means: PVConnDirFault - PV Direction Fault. The inverter stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: PVConnDirFault - PV Direction Fault.
Part involved: PV input over-voltage.
Likely causes:
- PV+/- connected the wrong way round.
Is it safe?
Switch the inverter off at its isolator and call an engineer.
| Does the inverter stop? | Yes |
|---|---|
| Severity | Safety lockout |
| Engineer needed? | Yes |
The inverter stops until the fault clears or is reset.
Resetting itself: no.
Manual reset: yes, after string design is corrected.
What you can check
- Read and note the exact code and time from the inverter display or app (screenshot).
- Call the installer. Do not touch DC cabling.
- Where the SolaX manual says 'press the ESC key to restart the inverter', a homeowner can do that on the display. Steps that say 'disconnect PV+/PV-/battery' are for the installer only.
What the engineer will check
- Measure open-circuit string voltage (cold-weather Voc rise).
- Check string design against inverter max DC voltage.
- Check for mixed/incorrect module counts.
Who to ask for: PV installer / system designer.
Certification: Electrician competent in grid-connected PV (BS 7671 Section 712; IET Code of Practice for Grid-connected Solar PV), ideally the original MCS-certified PV installer; brand-approved/trained installer to keep manufacturer warranty.
What you might notice
Sources
- X1-BOOST G4 2.5-6 kW User Manual Version 6.0 (Version 06, 3 Apr 2024), doc 320101048406 ↗ · 6.0 · page PDF p.47 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026