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CEC approved: May 2025Report outdated info

FOXESS CO LTD

1K5-1P-HI-10.5 (AS4777-2 2020)

10.5 kWSingle PhaseSolar InverterBackup Capable

Rated power: 10.5 kW
Phases: Single
Warranty: 10 yr
Type: solar

Full specifications

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.

Physical

IP rating: IP65

Technical specifications

Rated Power

10.5 kW

Max Efficiency

—

Phases

Single Phase

Max Input Voltage

—

Min Input Voltage

—

Max Input Current

—

Output Voltage

—

Max Output Current

—

Country of Origin

Unknown

Series

1K5-1P-HI

Warranty

10 years

Dimensions

0 x 0 x 0 mm

IP Rating

IP65

Operating Temp

-25°C to 60°C

Cooling

Natural

Features & compatibility

Battery Compatible

Backup Capable

Yes

ESM Compliant

Black Start

Grid Forming

Export Limiting

Remote Monitoring

CEC Approval Details

CEC Approved

29 May 2025

Approval Expiry

29 May 2028

Status

Active

Eligible for Rebates

Yes

About FOXESS CO LTD

Years in AU Market

7 years

Australian Office

Yes

CEC-Approved Batteries

116

CEC-Approved Panels

Estimated price (installed)

$2,100–$4,200

Perth installed price estimate · medium confidence

Prices vary by installer, configuration, and site complexity. Get exact quotes via our installer matching.

Quick summary

10.5 kW rated power

Efficiency N/A

Single Phase

CEC Approved

WA Compliance (May 2026)

ESM CompliantCheck

Export LimitingNo

Remote MonitoringNo

From May 1, 2026, all new battery installations in WA require CSIP-AUS compliant inverters. Verify ESM status with your installer.

Perth installation note

Perth's high ambient temperatures (regularly 35°C+) can reduce inverter efficiency and trigger thermal throttling. For installations in direct sun or non-ventilated garages, consider inverters with active cooling and wide operating temperature ranges. All grid-connected installations require Western Power approval. Systems above 5kVA require ESM compliance under WA regulations.

FOXESS CO LTD batteries (6)Browse CEC-approved panels

Compare systems

Compare this inverter with batteries for a complete system analysis

Perth performance

Daily Yield44.6 kWh

Annual Yield16,288 kWh

Based on 5 PSH/day (BOM) with 15% system derate.

Australian office

Has local presence

Website

www.fox-ess.com/au

7 years in Australian market

How it compares

The FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020) against the closest-power inverters from other brands.

Specification	FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)FOXESS CO LTD	8 Star Energy Pty Ltd Force 10.5HS+ (AS4777-2 2020)8 Star Energy Pty Ltd	8 Star Energy Pty Ltd Force 10.5S (AS4777-2 2020)8 Star Energy Pty Ltd

Rated power?	10.5 kW	10.5 kW	10.5 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Single-phase
Type	Solar	Hybrid	Solar
Battery ready	No	Yes	No
Warranty	10 years	Not verified	Not verified

Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.

Resources

Datasheet Warranty terms Installation guide

10-year inverter warranty

FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

Fox ESS offers a 10-year warranty covering defects in materials and workmanship for its inverters and charge controllers. It excludes coverage for non-accredited installations and modifications; claims must be made by authorized installers.

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Transfers to the next homeowner
What voids it: non-accredited installation, modification, improper installation, improper use or misuse, force majeure events, unauthorized repairs
Environment limits: none stated

Read the official warranty document (PDF)

Fault & error codes — FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

From the install manual

70 documented

Showing 70 of 70. The official install manual is the authoritative source — always confirm before acting.

ARM EEPROM FaultcriticalCall your installer
Manual (PDF)
The manager eeprom is fault.
Likely cause
Failure of EEPROM in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Boost FaultcriticalCall your installer
Manual (PDF)
The battery boost circuit mosfet is fail.
Likely cause
Malfunction in boost circuit.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Buck FaultcriticalCall your installer
Manual (PDF)
The battery buck circuit mosfet is fail.
Likely cause
Malfunction in charging circuit.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Relay OpencriticalCall your installer
Manual (PDF)
The battery relay keeps open.
Likely cause
Malfunction in battery relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Relay Short CircuitcriticalCall your installer
Manual (PDF)
The battery relay keeps close.
Likely cause
Malfunction in battery relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Volt FaultcriticalCall your installer
Manual (PDF)
Battery voltage fault.
Likely cause
Battery malfunction or disconnection.
What to do
Check if the battery input voltage is within the normal range.
BatCon Dir FaultcriticalCall your installer
Manual (PDF)
The battery connection is reversed.
Likely cause
Incorrectly connected battery terminals.
What to do
Check if the positive pole and negative pole of battery are correctly connected, or seek help.
Bms ChgCur HighcriticalCall your installer
Manual (PDF)
Battery charge over current.
Likely cause
Malfunction in charging system.
What to do
Please contact service department.
Bms DchgCur HighcriticalCall your installer
Manual (PDF)
Battery discharge over current.
Likely cause
Malfunction in discharge system.
What to do
Please contact service department.
Bms HW ProtectcriticalCall your installer
Manual (PDF)
Battery hardware under protection.
Likely cause
Battery hardware malfunction.
What to do
Please contact service department.
Bms Insul FaultcriticalCall your installer
Manual (PDF)
Battery insulation fault.
Likely cause
Damaged insulation of battery cables.
What to do
Please contact service department.
Bms M&S UnmatchcriticalCall your installer
Manual (PDF)
The software between Master and Slave are not match.
Likely cause
Inconsistent configurations.
What to do
Please contact service department.
Bms Mfg UnmatchcriticalCall your installer
Manual (PDF)
The cell manufacture is different.
Likely cause
Battery cells from different manufacturers.
What to do
Please contact service department.
Bms Relay FaultcriticalCall your installer
Manual (PDF)
Battery relay fault.
Likely cause
Failure of relay.
What to do
Please contact service department.
Bms SwHw UnmatchcriticalCall your installer
Manual (PDF)
The slave software and hardware are not match.
Likely cause
Incompatible software and hardware configurations.
What to do
Please contact service department.
Bms Temp HighcriticalCall your installer
Manual (PDF)
Battery over temperature.
Likely cause
Overheating of battery.
What to do
Please contact service department.
Bms Type UnmatchcriticalCall your installer
Manual (PDF)
The capacity of battery packs is different.
Likely cause
Mismatch in battery specifications.
What to do
Please contact service department.
Bms Volt HighcriticalCall your installer
Manual (PDF)
Battery over voltage.
Likely cause
Battery malfunction or overcharging.
What to do
Please contact service department.
Bms Volt LowcriticalCall your installer
Manual (PDF)
Battery under voltage.
Likely cause
Battery discharging or failure.
What to do
Please contact service department.
BmsCircuit FaultcriticalCall your installer
Manual (PDF)
Bms hardware circuit fault.
Likely cause
Fault in battery management system.
What to do
Please contact service department.
BmsCurSen FaultcriticalCall your installer
Manual (PDF)
Battery current sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
BmsTempSen FaultcriticalCall your installer
Manual (PDF)
Battery temperature sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
BmsVoltsSen FaultcriticalCall your installer
Manual (PDF)
Battery voltage sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
Dci Cons FaultcriticalCall your installer
Manual (PDF)
The dci sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
DCI FaultcriticalCall your installer
Manual (PDF)
DC component is out of limit in output current.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Eps Over LoadcriticalCall your installer
Manual (PDF)
Over load in off grid mode.
Likely cause
Excessive load on EPS.
What to do
Check if the EPS load power exceeds the limit, or seek help.
Eps Relay FaultcriticalCall your installer
Manual (PDF)
The eps relay is failed.
Likely cause
Malfunction in EPS relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Grid Lost FaultcriticalCall your installer
Manual (PDF)
Grid is lost.
Likely cause
Utility power outage.
What to do
System will reconnect if the utility returns. If not, seek help.
GridF Cons FaultcriticalCall your installer
Manual (PDF)
The grid frequency sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
GridV Cons FaultcriticalCall your installer
Manual (PDF)
The grid voltage sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
Ground FaultcriticalCall your installer
Manual (PDF)
The ground connection is failed.
Likely cause
Poor grounding or wiring issues.
What to do
Check voltage of neutral and PE, check AC wiring, disconnect PV, grid, and battery, then reconnect, or seek help.
HW Bus Vol FaultcriticalCall your installer
Manual (PDF)
Bus voltage out of range detected by hardware.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Inv EEPROM FaultcriticalCall your installer
Manual (PDF)
The inverter eeprom is fault.
Likely cause
Failure of EEPROM storage in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Iso FaultcriticalCall your installer
Manual (PDF)
The isolation is failed.
Likely cause
Damaged insulation or wiring.
What to do
Check insulation of electric wires, wait to see if it returns to normal, or seek help.
M1 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay M1 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
M2 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay M2 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
Main Relay OpencriticalCall your installer
Manual (PDF)
The grid relay keeps open.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
MDSP Smpl FaultcriticalCall your installer
Manual (PDF)
The master sample detection circuit is failed.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Over Load FaultcriticalCall your installer
Manual (PDF)
Over load in on grid mode.
Likely cause
Connected load exceeds inverter capacity.
What to do
Check if the load power exceeds the limit, or seek help.
PvCon Dir FaultcriticalCall your installer
Manual (PDF)
The PV connection is reversed.
Likely cause
Incorrectly connected PV terminals.
What to do
Check if the positive pole and negative pole of PV are correctly connected, or seek help.
Rc Cons FaultcriticalCall your installer
Manual (PDF)
The residual current sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
RDSP Smpl FaultcriticalCall your installer
Manual (PDF)
The slave sample detection circuit is failed.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Res Cur FaultcriticalCall your installer
Manual (PDF)
The residual current is high.
Likely cause
Possible electrical leakage.
What to do
Check insulation of electric wires, wait to see if it returns to normal, or seek help.
Res Cur HW FaultcriticalCall your installer
Manual (PDF)
Residual current detection device is failed.
Likely cause
Malfunction in residual current device.
What to do
Disconnect PV, grid, and battery, then reconnect.
S1 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay S1 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
S2 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay S2 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Bus Vol FaultcriticalCall your installer
Manual (PDF)
Bus voltage out of range detected by software.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
10min Volt FaultwarningCall your installer
Manual (PDF)
The grid voltage is out of range for the last 10 minutes.
Likely cause
Prolonged voltage fluctuation.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
Bms ChgReq NoAckwarningCall your installer
Manual (PDF)
No action for charging request.
Likely cause
Communication failure with the charging request.
What to do
Please contact service department.
Bms Ext FaultwarningCall your installer
Manual (PDF)
The communication between BMS and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between BMS and Inverter is correctly connected.
Bms Int FaultwarningCall your installer
Manual (PDF)
DIP switch at the wrong position; The communication between battery packs is interrupted.
Likely cause
Incorrect DIP switch configuration.
What to do
Move the DIP switch to the correct position; check communication cable between battery packs.
BMS LostwarningCall your installer
Manual (PDF)
The communication between BMS and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between BMS and Inverter is correctly connected.
Bms Temp LowwarningCall your installer
Manual (PDF)
Battery under temperature.
Likely cause
Insufficient temperature for operation.
What to do
Please contact service department.
Bms Ver UnmatchwarningCall your installer
Manual (PDF)
The software between slaves are different.
Likely cause
Inconsistent software versions.
What to do
Please contact service department.
BmsCellImbalancewarningCall your installer
Manual (PDF)
The capacities of cells are different.
Likely cause
Battery cell mismatch.
What to do
Please contact service department.
Grid Freq FaultwarningCall your installer
Manual (PDF)
Grid frequency out of range.
Likely cause
Frequency fluctuations in the power supply.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
Grid Volt FaultwarningCall your installer
Manual (PDF)
Grid voltage out of range.
Likely cause
Voltage fluctuations in the power supply.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
HW Bat Cur FaultwarningCall your installer
Manual (PDF)
Battery current high detected by hardware.
Likely cause
Excessive discharge current.
What to do
Disconnect PV, grid, and battery, then reconnect.
HW Inv Cur FaultwarningCall your installer
Manual (PDF)
Output current high detected by hardware.
Likely cause
Excessive load on the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
HW Pv Cur FaultwarningCall your installer
Manual (PDF)
PV input current high detected by hardware.
Likely cause
Excessive input from PV panels.
What to do
Disconnect PV, grid, and battery, then reconnect.
MDSP SPI FaultwarningCall your installer
Manual (PDF)
The communication between master and slave is fail.
Likely cause
Malfunction in internal communication.
What to do
Disconnect PV, grid, and battery, then reconnect.
Meter Lost FaultwarningCall your installer
Manual (PDF)
The communication between meter and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between meter and Inverter is correctly connected.
Pv Volt FaultwarningCall your installer
Manual (PDF)
PV voltage out of range.
Likely cause
Malfunction in the PV array.
What to do
Check the output voltage of PV panels, or seek help.
RDSP SPI FaultwarningCall your installer
Manual (PDF)
The communication between master and slave is fail.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
SCI FaultwarningCall your installer
Manual (PDF)
The communication between master and manager is fail.
Likely cause
Malfunction in internal communication.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Bat Cur FaultwarningCall your installer
Manual (PDF)
Battery current high detected by software.
Likely cause
Excessive load on the battery.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Inv Cur FaultwarningCall your installer
Manual (PDF)
Output current high detected by software.
Likely cause
Excessive load on the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Pv Cur FaultwarningCall your installer
Manual (PDF)
PV input current high detected by software.
Likely cause
Excessive output from PV.
What to do
Disconnect PV, grid, and battery, then reconnect.
Temp FaultwarningCall your installer
Manual (PDF)
The inverter temperature is high.
Likely cause
Insufficient cooling or overheating.
What to do
Check the environment temperature, wait to see if it returns to normal or seek help.
Bat Power Lowinfo
Manual (PDF)
The battery power is low.
Likely cause
Battery discharging.
What to do
Wait until the battery is recharged.

Part of the FOXESS CO LTD 1K5-1P-HI series

Compare every FOXESS CO LTD 1K5-1P-HI variant side by side →

More FOXESS CO LTD Inverters

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3.68 kW · 1φ

1K5-1P-HI-4.6 (AS4777-2 2020)

4.6 kW · 1φ

1K5-1P-HI-5 (AS4777-2 2020)

5 kW · 1φ

1K5-1P-HI-6 (AS4777-2 2020)

6 kW · 1φ

1K5-1P-HI-7 (AS4777-2 2020)

7 kW · 1φ

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Other CEC-approved products from FOXESS CO LTD available in Australia.

FOXESS CO LTD Batteries

1K5-BAT-4660-L2

9.32 kWh · LFP

1K5-BAT-4660-L3

13.98 kWh · LFP

1K5-BAT-4660-L4

18.64 kWh · LFP

1K5-BAT-4660-L5

23.3 kWh · LFP

1K5-BAT-4660-L6

27.96 kWh · LFP

1K5-BAT-4660-L7

32.61 kWh · LFP

View all FOXESS CO LTD batteries

View full FOXESS CO LTD manufacturer profile

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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.

Back to inverter index

CEC approved: May 2025Report outdated info

FOXESS CO LTD

1K5-1P-HI-10.5 (AS4777-2 2020)

10.5 kWSingle PhaseSolar InverterBackup Capable

View datasheet (PDF)

Rated power: 10.5 kW
Phases: Single
Warranty: 10 yr
Type: solar

Full specifications

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.

Physical

IP rating: IP65

Technical specifications

Rated Power

10.5 kW

Max Efficiency

—

Phases

Single Phase

Max Input Voltage

—

Min Input Voltage

—

Max Input Current

—

Output Voltage

—

Max Output Current

—

Country of Origin

Unknown

Series

1K5-1P-HI

Warranty

10 years

Dimensions

0 x 0 x 0 mm

IP Rating

IP65

Operating Temp

-25°C to 60°C

Cooling

Natural

Features & compatibility

Battery Compatible

Backup Capable

Yes

ESM Compliant

Black Start

Grid Forming

Export Limiting

Remote Monitoring

CEC Approval Details

CEC Approved

29 May 2025

Approval Expiry

29 May 2028

Status

Active

Eligible for Rebates

Yes

About FOXESS CO LTD

Years in AU Market

7 years

Australian Office

Yes

CEC-Approved Batteries

116

CEC-Approved Panels

Estimated price (installed)

$2,100–$4,200

Perth installed price estimate · medium confidence

Prices vary by installer, configuration, and site complexity. Get exact quotes via our installer matching.

Quick summary

10.5 kW rated power

Efficiency N/A

Single Phase

CEC Approved

WA Compliance (May 2026)

ESM CompliantCheck

Export LimitingNo

Remote MonitoringNo

From May 1, 2026, all new battery installations in WA require CSIP-AUS compliant inverters. Verify ESM status with your installer.

Perth installation note

FOXESS CO LTD batteries (6)Browse CEC-approved panels

Compare systems

Compare this inverter with batteries for a complete system analysis

Perth performance

Daily Yield44.6 kWh

Annual Yield16,288 kWh

Based on 5 PSH/day (BOM) with 15% system derate.

Australian office

Has local presence

Website

www.fox-ess.com/au

7 years in Australian market

How it compares

The FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020) against the closest-power inverters from other brands.

Specification	FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)FOXESS CO LTD	8 Star Energy Pty Ltd Force 10.5HS+ (AS4777-2 2020)8 Star Energy Pty Ltd	8 Star Energy Pty Ltd Force 10.5S (AS4777-2 2020)8 Star Energy Pty Ltd

Rated power?	10.5 kW	10.5 kW	10.5 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Single-phase
Type	Solar	Hybrid	Solar
Battery ready	No	Yes	No
Warranty	10 years	Not verified	Not verified

Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.

Resources

Datasheet Warranty terms Installation guide

10-year inverter warranty

FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Transfers to the next homeowner
What voids it: non-accredited installation, modification, improper installation, improper use or misuse, force majeure events, unauthorized repairs
Environment limits: none stated

Read the official warranty document (PDF)

Fault & error codes — FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

From the install manual

70 documented

Showing 70 of 70. The official install manual is the authoritative source — always confirm before acting.

ARM EEPROM FaultcriticalCall your installer
Manual (PDF)
The manager eeprom is fault.
Likely cause
Failure of EEPROM in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Boost FaultcriticalCall your installer
Manual (PDF)
The battery boost circuit mosfet is fail.
Likely cause
Malfunction in boost circuit.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Buck FaultcriticalCall your installer
Manual (PDF)
The battery buck circuit mosfet is fail.
Likely cause
Malfunction in charging circuit.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Relay OpencriticalCall your installer
Manual (PDF)
The battery relay keeps open.
Likely cause
Malfunction in battery relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Relay Short CircuitcriticalCall your installer
Manual (PDF)
The battery relay keeps close.
Likely cause
Malfunction in battery relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Bat Volt FaultcriticalCall your installer
Manual (PDF)
Battery voltage fault.
Likely cause
Battery malfunction or disconnection.
What to do
Check if the battery input voltage is within the normal range.
BatCon Dir FaultcriticalCall your installer
Manual (PDF)
The battery connection is reversed.
Likely cause
Incorrectly connected battery terminals.
What to do
Check if the positive pole and negative pole of battery are correctly connected, or seek help.
Bms ChgCur HighcriticalCall your installer
Manual (PDF)
Battery charge over current.
Likely cause
Malfunction in charging system.
What to do
Please contact service department.
Bms DchgCur HighcriticalCall your installer
Manual (PDF)
Battery discharge over current.
Likely cause
Malfunction in discharge system.
What to do
Please contact service department.
Bms HW ProtectcriticalCall your installer
Manual (PDF)
Battery hardware under protection.
Likely cause
Battery hardware malfunction.
What to do
Please contact service department.
Bms Insul FaultcriticalCall your installer
Manual (PDF)
Battery insulation fault.
Likely cause
Damaged insulation of battery cables.
What to do
Please contact service department.
Bms M&S UnmatchcriticalCall your installer
Manual (PDF)
The software between Master and Slave are not match.
Likely cause
Inconsistent configurations.
What to do
Please contact service department.
Bms Mfg UnmatchcriticalCall your installer
Manual (PDF)
The cell manufacture is different.
Likely cause
Battery cells from different manufacturers.
What to do
Please contact service department.
Bms Relay FaultcriticalCall your installer
Manual (PDF)
Battery relay fault.
Likely cause
Failure of relay.
What to do
Please contact service department.
Bms SwHw UnmatchcriticalCall your installer
Manual (PDF)
The slave software and hardware are not match.
Likely cause
Incompatible software and hardware configurations.
What to do
Please contact service department.
Bms Temp HighcriticalCall your installer
Manual (PDF)
Battery over temperature.
Likely cause
Overheating of battery.
What to do
Please contact service department.
Bms Type UnmatchcriticalCall your installer
Manual (PDF)
The capacity of battery packs is different.
Likely cause
Mismatch in battery specifications.
What to do
Please contact service department.
Bms Volt HighcriticalCall your installer
Manual (PDF)
Battery over voltage.
Likely cause
Battery malfunction or overcharging.
What to do
Please contact service department.
Bms Volt LowcriticalCall your installer
Manual (PDF)
Battery under voltage.
Likely cause
Battery discharging or failure.
What to do
Please contact service department.
BmsCircuit FaultcriticalCall your installer
Manual (PDF)
Bms hardware circuit fault.
Likely cause
Fault in battery management system.
What to do
Please contact service department.
BmsCurSen FaultcriticalCall your installer
Manual (PDF)
Battery current sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
BmsTempSen FaultcriticalCall your installer
Manual (PDF)
Battery temperature sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
BmsVoltsSen FaultcriticalCall your installer
Manual (PDF)
Battery voltage sensor fault.
Likely cause
Failure of sensor.
What to do
Please contact service department.
Dci Cons FaultcriticalCall your installer
Manual (PDF)
The dci sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
DCI FaultcriticalCall your installer
Manual (PDF)
DC component is out of limit in output current.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Eps Over LoadcriticalCall your installer
Manual (PDF)
Over load in off grid mode.
Likely cause
Excessive load on EPS.
What to do
Check if the EPS load power exceeds the limit, or seek help.
Eps Relay FaultcriticalCall your installer
Manual (PDF)
The eps relay is failed.
Likely cause
Malfunction in EPS relay.
What to do
Disconnect PV, grid, and battery, then reconnect.
Grid Lost FaultcriticalCall your installer
Manual (PDF)
Grid is lost.
Likely cause
Utility power outage.
What to do
System will reconnect if the utility returns. If not, seek help.
GridF Cons FaultcriticalCall your installer
Manual (PDF)
The grid frequency sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
GridV Cons FaultcriticalCall your installer
Manual (PDF)
The grid voltage sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
Ground FaultcriticalCall your installer
Manual (PDF)
The ground connection is failed.
Likely cause
Poor grounding or wiring issues.
What to do
Check voltage of neutral and PE, check AC wiring, disconnect PV, grid, and battery, then reconnect, or seek help.
HW Bus Vol FaultcriticalCall your installer
Manual (PDF)
Bus voltage out of range detected by hardware.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Inv EEPROM FaultcriticalCall your installer
Manual (PDF)
The inverter eeprom is fault.
Likely cause
Failure of EEPROM storage in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Iso FaultcriticalCall your installer
Manual (PDF)
The isolation is failed.
Likely cause
Damaged insulation or wiring.
What to do
Check insulation of electric wires, wait to see if it returns to normal, or seek help.
M1 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay M1 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
M2 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay M2 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
Main Relay OpencriticalCall your installer
Manual (PDF)
The grid relay keeps open.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
MDSP Smpl FaultcriticalCall your installer
Manual (PDF)
The master sample detection circuit is failed.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Over Load FaultcriticalCall your installer
Manual (PDF)
Over load in on grid mode.
Likely cause
Connected load exceeds inverter capacity.
What to do
Check if the load power exceeds the limit, or seek help.
PvCon Dir FaultcriticalCall your installer
Manual (PDF)
The PV connection is reversed.
Likely cause
Incorrectly connected PV terminals.
What to do
Check if the positive pole and negative pole of PV are correctly connected, or seek help.
Rc Cons FaultcriticalCall your installer
Manual (PDF)
The residual current sample value between master and slave is not consistent.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
RDSP Smpl FaultcriticalCall your installer
Manual (PDF)
The slave sample detection circuit is failed.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
Res Cur FaultcriticalCall your installer
Manual (PDF)
The residual current is high.
Likely cause
Possible electrical leakage.
What to do
Check insulation of electric wires, wait to see if it returns to normal, or seek help.
Res Cur HW FaultcriticalCall your installer
Manual (PDF)
Residual current detection device is failed.
Likely cause
Malfunction in residual current device.
What to do
Disconnect PV, grid, and battery, then reconnect.
S1 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay S1 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
S2 Close FaultcriticalCall your installer
Manual (PDF)
The grid relay S2 keep close.
Likely cause
Fault in the relay system.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Bus Vol FaultcriticalCall your installer
Manual (PDF)
Bus voltage out of range detected by software.
Likely cause
Malfunction in the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
10min Volt FaultwarningCall your installer
Manual (PDF)
The grid voltage is out of range for the last 10 minutes.
Likely cause
Prolonged voltage fluctuation.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
Bms ChgReq NoAckwarningCall your installer
Manual (PDF)
No action for charging request.
Likely cause
Communication failure with the charging request.
What to do
Please contact service department.
Bms Ext FaultwarningCall your installer
Manual (PDF)
The communication between BMS and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between BMS and Inverter is correctly connected.
Bms Int FaultwarningCall your installer
Manual (PDF)
DIP switch at the wrong position; The communication between battery packs is interrupted.
Likely cause
Incorrect DIP switch configuration.
What to do
Move the DIP switch to the correct position; check communication cable between battery packs.
BMS LostwarningCall your installer
Manual (PDF)
The communication between BMS and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between BMS and Inverter is correctly connected.
Bms Temp LowwarningCall your installer
Manual (PDF)
Battery under temperature.
Likely cause
Insufficient temperature for operation.
What to do
Please contact service department.
Bms Ver UnmatchwarningCall your installer
Manual (PDF)
The software between slaves are different.
Likely cause
Inconsistent software versions.
What to do
Please contact service department.
BmsCellImbalancewarningCall your installer
Manual (PDF)
The capacities of cells are different.
Likely cause
Battery cell mismatch.
What to do
Please contact service department.
Grid Freq FaultwarningCall your installer
Manual (PDF)
Grid frequency out of range.
Likely cause
Frequency fluctuations in the power supply.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
Grid Volt FaultwarningCall your installer
Manual (PDF)
Grid voltage out of range.
Likely cause
Voltage fluctuations in the power supply.
What to do
System will reconnect if the utility returns to normal. Otherwise, seek help.
HW Bat Cur FaultwarningCall your installer
Manual (PDF)
Battery current high detected by hardware.
Likely cause
Excessive discharge current.
What to do
Disconnect PV, grid, and battery, then reconnect.
HW Inv Cur FaultwarningCall your installer
Manual (PDF)
Output current high detected by hardware.
Likely cause
Excessive load on the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
HW Pv Cur FaultwarningCall your installer
Manual (PDF)
PV input current high detected by hardware.
Likely cause
Excessive input from PV panels.
What to do
Disconnect PV, grid, and battery, then reconnect.
MDSP SPI FaultwarningCall your installer
Manual (PDF)
The communication between master and slave is fail.
Likely cause
Malfunction in internal communication.
What to do
Disconnect PV, grid, and battery, then reconnect.
Meter Lost FaultwarningCall your installer
Manual (PDF)
The communication between meter and Inverter is interrupted.
Likely cause
Disconnected or faulty communication cable.
What to do
Check if the communication cable between meter and Inverter is correctly connected.
Pv Volt FaultwarningCall your installer
Manual (PDF)
PV voltage out of range.
Likely cause
Malfunction in the PV array.
What to do
Check the output voltage of PV panels, or seek help.
RDSP SPI FaultwarningCall your installer
Manual (PDF)
The communication between master and slave is fail.
Likely cause
Data communication issue.
What to do
Disconnect PV, grid, and battery, then reconnect.
SCI FaultwarningCall your installer
Manual (PDF)
The communication between master and manager is fail.
Likely cause
Malfunction in internal communication.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Bat Cur FaultwarningCall your installer
Manual (PDF)
Battery current high detected by software.
Likely cause
Excessive load on the battery.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Inv Cur FaultwarningCall your installer
Manual (PDF)
Output current high detected by software.
Likely cause
Excessive load on the inverter.
What to do
Disconnect PV, grid, and battery, then reconnect.
SW Pv Cur FaultwarningCall your installer
Manual (PDF)
PV input current high detected by software.
Likely cause
Excessive output from PV.
What to do
Disconnect PV, grid, and battery, then reconnect.
Temp FaultwarningCall your installer
Manual (PDF)
The inverter temperature is high.
Likely cause
Insufficient cooling or overheating.
What to do
Check the environment temperature, wait to see if it returns to normal or seek help.
Bat Power Lowinfo
Manual (PDF)
The battery power is low.
Likely cause
Battery discharging.
What to do
Wait until the battery is recharged.

Part of the FOXESS CO LTD 1K5-1P-HI series

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1K5-1P-HI-10.5 (AS4777-2 2020)

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CEC Approval Details

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WA Compliance (May 2026)

Perth installation note

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Fault & error codes — FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

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1K5-1P-HI-10.5 (AS4777-2 2020)

Full specifications

Physical

Technical specifications

Features & compatibility

CEC Approval Details

About FOXESS CO LTD

Estimated price (installed)

Quick summary

WA Compliance (May 2026)

Perth installation note

Related

Compare systems

Perth performance

How it compares

10-year inverter warranty

Fault & error codes — FOXESS CO LTD 1K5-1P-HI-10.5 (AS4777-2 2020)

More FOXESS CO LTD Inverters

More from FOXESS CO LTD

FOXESS CO LTD Batteries

Want to take the next step?