Solplanet error codes explained

What 44 Solplanet inverter fault and error codes mean, in plain English, with safe checks you can do and when to call a licensed electrician.

Safety first: never open the switchboard, remove covers, or pull apart or disconnect the inverter, batteries, isolators or wiring. Only use the switches and buttons described here. Anything else must be done by a licensed electrician. Call 1300 209 503 or book a service request.

Guide only. This information is a general guide taken from manufacturer documentation. All electrical work must be performed by a licensed electrician. Never open your inverter, battery or switchboard. If you see smoke, smell burning or see damage, keep clear and call 000.

Common Solplanet questions

What does Solplanet 00 "DischgOverCur" mean?

Battery discharge over-current (the load drawn from the battery is too high). Note the code and the battery state of charge shown in the app This is a guide only; any electrical work must be done by a licensed electrician.

What does Solplanet 29 "DischgOverCur" mean?

What does Solplanet 01 "Overload" mean?

The load is more than the inverter can supply. Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit This is a guide only; any electrical work must be done by a licensed electrician.

What does Solplanet 02 "Bat Disconnect" mean?

Battery not connected. Check the app - the battery may show as offline or with no state of charge This is a guide only; any electrical work must be done by a licensed electrician.

What does Solplanet 03 "Bat Under Vol" mean?

Battery voltage too low. Note the code and the battery state of charge shown in the app This is a guide only; any electrical work must be done by a licensed electrician.

Need help with this fault?

Get a licensed electrician to call you back.

Total Solar can help: our licensed electricians install and service systems. Based in Ellenbrook, WA, with Victoria and Queensland also available.

Or call 1300 209 503

Sources

Meanings are summarised from these manufacturer documents. Check your own model's manual, as codes vary between models and firmware versions.

Solplanet ASW08-12KH-T1 three-phase hybrid inverter User Manual UM0040 V03, Fault diagnosis table pp.28-30

Solplanet is a trademark of its owner. Total Solar is not affiliated with the manufacturer unless stated. All fault code guides

Code	Message & meaning	Model	Type
00Fault	DischgOverCur Battery discharge over-current (the load drawn from the battery is too high). What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
29Fault	DischgOverCur Battery discharge over-current (the load drawn from the battery is too high). What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
01Fault	Overload The load is more than the inverter can supply. What you can do Turn off some large appliances (air-conditioners, ovens, kettles, pool pumps) - backup outputs have a power limit The system usually recovers by itself once the load drops If it keeps happening with normal loads, call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
02Fault	Bat Disconnect Battery not connected. What you can do Check the app - the battery may show as offline or with no state of charge Restart the system once using the shutdown and start-up steps in your owner's manual If the alarm comes back, call your installer - battery communication cables must be checked by them ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
03Fault	Bat Under Vol Battery voltage too low. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
04Fault	Bat Under Vol Battery voltage too low. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
26Fault	Bat Under Vol Battery voltage too low. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
05Fault	Bat Over Vol Battery voltage too high. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
27Fault	Bat Over Vol Battery voltage too high. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
06Warning	grid low vol Grid voltage too low. What you can do This is usually caused by the mains supply, not the solar system The inverter normally reconnects by itself once grid voltage is back in range If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
07Warning	grid over vol Grid voltage too high. What you can do This is usually caused by the mains supply, not the solar system The inverter normally reconnects by itself once grid voltage is back in range If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
08Warning	grid low freq Grid frequency too low. What you can do This is caused by the mains frequency moving outside the allowed range, usually briefly The inverter reconnects by itself once the grid is stable If it keeps happening, note the times and call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
09Warning	grid overFreq Grid frequency too high. What you can do This is caused by the mains frequency moving outside the allowed range, usually briefly The inverter reconnects by itself once the grid is stable If it keeps happening, note the times and call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
10Critical	GFCI over Leakage (residual) current too high. What you can do Keep clear and do not touch the inverter or cabling Note the code, date and time If you see smoke, smell burning or hear crackling, keep everyone away and call 000 Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
11Fault	SolarUnconect Solar (PV) input not connected. What you can do Check solar generation in the app compared with similar days Do not touch the DC isolators, cables or connectors, and don't go on the roof If it doesn't clear by itself, call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
12Fault	Grid CtReverse The grid current sensor (CT) is connected the wrong way round. What you can do Check the monitoring app for the alarm and whether export/consumption readings look wrong Restart your home router if the meter talks over Wi-Fi or LAN Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
13Fault	bus under vol Internal DC bus voltage too low. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
14Fault	bus over vol Internal DC bus voltage too high. What you can do Do not touch the DC isolators or cables Note the time - this often shows on cold, very sunny mornings Call your installer - the panel strings may need to be checked against the inverter's limits ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
15Fault	inv over cur Inverter output over-current. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
16Fault	chg over cur Battery charge over-current. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
28Fault	chg over cur Battery charge over-current. What you can do Note the code and the battery state of charge shown in the app Let the system run - some battery voltage protections clear by themselves after charging or discharging If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
17Fault	bus vol osc Internal DC bus voltage oscillation. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
18Fault	inv under vol Inverter output voltage too low. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
19Fault	inv over vol Inverter output voltage too high. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
20Fault	InvFreqAbnor Inverter output frequency abnormal. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
21Fault	env temp high Ambient temperature too high. What you can do Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents It usually recovers once it cools down If it repeats often or you can hear a noisy/failed fan, call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
23Fault	bat over temp Battery temperature too high. What you can do Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000 If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it Let the battery cool; most units recover by themselves If the alarm keeps returning, call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
24Fault	Bat UnderTemp Battery temperature too low. What you can do Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000 If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it Let the battery cool; most units recover by themselves If the alarm keeps returning, call your installer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
25Fault	BatCellUnball Battery cell voltages are unbalanced. What you can do Check the battery status and any extra alarms in the app Restart the system once using the owner shutdown/start-up steps in your manual if it allows If the alarm comes back, or the battery is hot, swollen, noisy or smells, keep clear, call your installer, and call 000 if there is smoke ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
32Fault	bus soft fail Internal DC bus soft-start failure. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
33Fault	inv soft fail Inverter soft-start failure. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
34Fault	bus short Internal DC bus short circuit. What you can do Note the code, time and whether it clears by itself You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
35Critical	inv short Inverter output short circuit. What you can do Keep clear - do not touch the inverter, backup circuits or cabling Switch off appliances on backup circuits only if it is safe to do so If you see smoke, smell burning or hear crackling, keep everyone away and call 000 Call a licensed electrician or your installer - a short circuit must be found before the system is reset ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
36Fault	fan fault Fan fault. What you can do From outside, check that nothing is blocking the vents Don't open the unit Call your installer to arrange a fan check or replacement ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
37Critical	PV iso low PV insulation resistance to earth too low. What you can do Keep clear - do not touch the panels, rooftop isolators, DC cables or the inverter Note the code and whether it appears in wet weather or early morning - this helps the electrician If you see smoke, smell burning or hear crackling, keep everyone away and call 000 Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
38Fault	BusRelayFault Internal bus relay fault. What you can do Note the code, then restart the system once using the owner shutdown/start-up steps in your manual If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
39Fault	GridRlyFault Grid relay fault. What you can do Note the code, then restart the system once using the owner shutdown/start-up steps in your manual If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
40Fault	BACKUP rly fault Backup relay fault. What you can do Note the code, then restart the system once using the owner shutdown/start-up steps in your manual If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
41Critical	GFCI fault Leakage-current (GFCI) sensor fault. What you can do Keep clear and do not touch the inverter or cabling Note the code, date and time If you see smoke, smell burning or hear crackling, keep everyone away and call 000 Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter
42Fault	Load CT fault Load current sensor (CT) fault. What you can do Check the monitoring app for the alarm and whether export/consumption readings look wrong Restart your home router if the meter talks over Wi-Fi or LAN Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician ASW08-12KH-T1 three-phase hybrid · Guide only. All work must be done by a licensed electrician.	ASW08-12KH-T1 three-phase hybrid	Inverter

Common Solplanet questions

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