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Solar inverter · Deye · Grid-Connected PV Inverter series · CEC approved May 2025
CEC listing: SUN-18K-G05-AU (AS4777-2 2020)
An 18 kW three-phase solar inverter.
Read from the figures on this page. No review written yet.
The numbers that matter for a home. The full datasheet is below.
Rated power
How much solar it can turn into usable power at once
Max efficiency
How much of the solar you make reaches the house
Phases
Needs a three-phase supply — check your switchboard
Type
Runs solar only
Warranty
How long NingBo Deye Inverter Technology Co Ltd stands behind it
Every figure on file for the Deye SUN-18K-G05-AU, by section.
| Specification | Value |
|---|---|
| Efficiency | |
| Max efficiency | 98.3% |
| Physical | |
| IP rating | IP65 |
| Installation requirements | |
| Top clearance | 500 mm |
| Side clearance | 500 mm |
| AC breaker | 45 A |
| Cable gauge | 10 mm² |
| Earthing method | TN-S |
| DNSP pre-approval | Yes |
| Estimated install time | 4 hrs |
Parsed from the manufacturer datasheet, install manual, and warranty document. Confirm against the linked PDFs before relying on a value for a quote or installation.
Battery compatible
No
Backup capable
No
CEC approved
30 May 2025
Approval expiry
20 Apr 2027
Status
Active
Eligible for rebates
Yes
Years in AU Market
6 years
Australian Office
Not verified
CEC-Approved Batteries
53
CEC-Approved Panels
0
Category
Mid-Tier
Typical installed, inverter only
$3,600–$7,200
Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.
Compare quotes from installers you choose
Western Power approval is required for every grid-connected install. Under Emergency Solar Management, a new system must be remotely manageable, or take an export limit instead — ask your installer to confirm this inverter’s ESM status.
Website
au.deyeinverter.comThe Deye SUN-18K-G05-AU against the closest-power inverters from other brands.
| Specification | |||
|---|---|---|---|
| Rated power? | 18 kW | 18 kW | 18 kW |
| Max efficiency? | 98.3%best value | 0.0% | 0.0% |
| MPPT trackers? | Not verified | Not verified | Not verified |
| Phases | Three-phase | Single-phase | Three-phase |
| Type | Solar | Solar | Hybrid |
| Battery ready | No | No | Yes |
| Warranty | 10 years | Not verified | Not verified |
Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.
This inverter is covered for 10 years, with important exclusions for improper installation. To claim, contact customer support.
AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.
From the install manual
Showing 64 of 64. The official install manual is the authoritative source — always confirm before acting.
F02criticalCall your installerDC insulation impedance permanent fault
F04criticalCall your installerGround fault GFDI
F06criticalCall your installerWrite the memory error
F10criticalCall your installerAuxiliary switch power supply failure
F15criticalCall your installerAC firmware over current
F16criticalCall your installerGFCI(RCD) AC leakage current fault
F18criticalCall your installerAC over current fault of hardware
F20criticalCall your installerDC over current fault of the hardware
F22criticalCall your installerCrash stop (if there is a stop button)
F24criticalCall your installerDC insulation impedance failure
F30criticalCall your installerAC main contactor failure
F35criticalCall your installerNo AC grid
F39criticalCall your installerAC over current(one cycle)
F41criticalCall your installerAC Line W,U over voltage
F42criticalCall your installerAC Line W,U low voltage
F43criticalCall your installerAC Line V,W over voltage
F44criticalCall your installerAC Line V,W low voltage
F45criticalCall your installerAC Line U,V over voltage
F46criticalCall your installerAC Line U,V low voltage
F47criticalCall your installerAC Over frequency
F48criticalCall your installerAC lower frequency
F55criticalCall your installerDC busbar voltage is too high
F56criticalCall your installerDC busbar voltage is too low
F63criticalCall your installerARC fault
F64criticalCall your installerIGBT heat sink high temperature
F01warningDC input polarity reverse fault
F03warningDC leakage current fault
F05warningCall your installerRead the memory error
F13warningWorking mode changed/Grid mode changed
F23warningAC leakage current is transient over current
F26warningThe DC busbar is unbalanced
F31warningDC boost soft start
F57warningAC reverse irrigation
F07infoGFDI blown fuse
F08infoGFDI grounding touch failure
F09infoIGBT damaged by excessive drop voltage
F11infoAC main contactor errors
F12infoAC auxiliary contactor errors
F14infoDC firmware over current
F17infoThree phase current, over-current fault
F19infoAll hardware failure synthesis
F21infoDC leakage flow fault
F25infoDC feedback fault
F27infoDC end insulation error
F28infoInverter 1 DC high fault
F29infoAC load switch failure
F32infoInverter 2 dc high fault
F33infoAC over current
F34infoAC current over load
F36infoAC grid phase error
F37infoAC three-phase voltage unbalance failure
F38infoAC three-phase current unbalance failure
F40infoDC over current
F49infoU phase grid current DC component over current
F50infoV phase grid current DC component over current
F51infoW phase grid current DC component over current
F52infoAC inductor A,phase current DC current high
F53infoAC inductor B,phase current DC current high
F54infoAC inductor C,phase current DC current high
F58infoAC grid U over current
F59infoAC grid V over current
F60infoAC grid W over current
F61infoReactor A phase over current
F62infoReactor B phase over current
Part of the Deye Grid-Connected PV Inverter series
Compare every Deye Grid-Connected PV Inverter variant side by side →
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Other CEC-approved products from NingBo Deye Inverter Technology Co Ltd available in Australia.
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About this data
All inverter specifications are sourced from the CEC Approved Products Register. Specifications are provided as published by the CEC and may differ from manufacturer datasheets. Verify current specifications with the manufacturer or your installer before purchasing. Not all listed models may be currently available in Western Australia.