Alpha ESS SMILE5 hybrid inverter (SMILE5-INV) error codes explained
What 44 Alpha ESS SMILE5 hybrid inverter (SMILE5-INV) inverter & battery 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.
| Code | Message & meaning |
|---|---|
| 100005Fault |
BUS OVP1The equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100007Critical |
Insulation faultThe inverter measured low insulation resistance between the solar/battery DC circuits and earth. In Australia this is treated as an earth fault alarm, and the system must be checked by a licensed electrician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100008Critical |
GFCI faultThe inverter measured leakage (residual) current flowing to earth above its safety limit and disconnected. This can indicate damaged insulation somewhere in the system. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100010Fault |
Grid relay faultThe grid relay check failed. Occasional events are usually caused by brief grid problems and clear by themselves. Persistent ones can indicate a relay fault. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100012Fault |
PV ReverseA solar string or the battery appears to be connected with positive and negative swapped. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100025Fault |
BAT OVPThe battery management system has reported a problem with battery voltage, current, cells or internal hardware and has limited or stopped battery operation. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100026Info |
BAT UVPThe battery's state of charge or voltage is low, so the system has stopped discharging it to protect the cells. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100027Fault |
Battery loseThe inverter and battery (or parts inside the battery) have stopped talking to each other, so the battery may stop charging or discharging. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100030Warning |
BAT1 discharge OCPThe backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100038Fault |
Output DC over currentThe inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100041Fault |
Output DC over voltageThe inverter detected too much DC current in its AC output, which the grid standards don't allow, so it disconnected. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100042Warning |
Output shortThe backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100043Warning |
Output overloadThe backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100046Fault |
DC Input DisturbanceThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100052Warning |
Backup ovpThe backup/EPS (off-grid) output is overloaded or abnormal, so the system has limited or switched off backup power. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100054Fault |
Dc bus undervoltThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100058Fault |
AFCI check protectThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100060Fault |
Dsp selfcheckThere is a firmware, model or configuration mismatch between parts of the system, so it can't run normally. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100122Fault |
EEPROM R/W FailureThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100123Fault |
DSP communication failureThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100145Fault |
12V auxiliary power FaultThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100165Fault |
data storage errorThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100166Fault |
inverter circuit abnormalThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 100167Fault |
boost circuit abnormalThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110004Info |
dc power alarmThe inverter is reducing output because grid voltage is high (voltage-dependent derating required by grid rules). What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110005Fault |
Battery stops running alarmThe battery has stopped running, for example because of a shutdown command or because the battery is in protection. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110006Warning |
over temperature alarmThe inverter is running too hot, so it has reduced output or paused to protect itself. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110014Fault |
Pv over voltageThe DC voltage coming from the solar panels is higher than the inverter is rated for. Over-voltage can damage the inverter. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110021Warning |
Grid Loss AlarmThe inverter cannot see a normal mains supply, so it has stopped exporting to the grid (and a hybrid system may switch to backup). What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110022Warning |
Grid Volt AlarmThe mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110023Warning |
Grid Freq AlarmGrid frequency moved outside the allowed range, so the inverter disconnected or reduced output as the standards require. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110024Warning |
10min Grid Volt AlarmThe mains voltage the inverter measured was outside the limits allowed for your network, so it disconnected or reduced output to protect the grid. This is usually a grid condition, not a faulty inverter. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110027Fault |
LN Reverse AlarmThe inverter has detected an AC wiring problem, for example active and neutral swapped or a connection made the wrong way round. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110029Critical |
GFCI AlarmThe inverter measured leakage (residual) current flowing to earth above its safety limit and disconnected. This can indicate damaged insulation somewhere in the system. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110030Critical |
ISO AlarmThe inverter measured low insulation resistance between the solar/battery DC circuits and earth. In Australia this is treated as an earth fault alarm, and the system must be checked by a licensed electrician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110034Warning |
Fan Abnormal AlarmA cooling fan isn't working properly, which can make the unit run hot and reduce output. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110036Fault |
FLASH ID AlarmThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110037Fault |
ReadFlash AlarmThe equipment's self-checks found an internal problem (for example relays, measuring circuits, internal communication or power electronics). Some of these clear by themselves after a one-off event, but repeated alarms usually need a technician. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110039Fault |
Machine Type AlarmThere is a firmware, model or configuration mismatch between parts of the system, so it can't run normally. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110040Info |
Inv Volt Low AlarmThere isn't enough solar power or voltage for the inverter to run. This is normal at dawn, dusk and in heavy cloud. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110048Info |
No Pv Input AlarmThere isn't enough solar power or voltage for the inverter to run. This is normal at dawn, dusk and in heavy cloud. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110049Info |
Input Power Limit AlarmInput power is being limited. Alpha ESS says this is normal in low light. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110050Warning |
Output Power Limit AlarmThe inverter's output power is being limited. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
| 110059Warning |
grid waveform abnormal alarmThe inverter saw something abnormal about the grid supply (for example phase loss, imbalance, waveform distortion or loss of mains), so it disconnected as a safety measure. What you can do
SMILE5 hybrid inverter (SMILE5-INV) · Guide only. All work must be done by a licensed electrician. |
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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.
Alpha ESS is a trademark of its owner. Total Solar is not affiliated with the manufacturer unless stated. All fault code guides