In this failure, the inverter, battery inverter or site controller stops getting usable data from the energy meter. Either the link is lost or the meter sends readings that make no sense. It shows up as a meter communication fault, a meter MIA or meter invalid flag, or a feed-in reading that stays at 0 W for a full day. While the meter is out, export limiting cannot work, and depending on the control mode the system may stop until communication returns. With an S0 meter, first wait for PV output to rise, because low production alone can keep the meter from reporting. If the message stays, the S0 counter is probably defective and should be replaced. Check that the meter is on the same network as the inverter, and that the data cables and terminals are undamaged and tight. On Wi-Fi links, improve the signal with a repeater or switch to Ethernet. If communication stays unstable, set up a separate network with its own router. The meter invalid flag does not catch reversed CT polarity, so check the meter wiring at commissioning.
<!-- review notes
affectsc1 verified · fact Energy meter
sec=h1 h=c24f2ca4ce92sec=h475 h=b26580197ffcsec=h235 h=881ad6c197f7tbl=51.r5 h=fe9e6fc08424verified by: review-workflowverified on: 2026-10-24
c2 drafted · lead Communication cable proposed
Damaged or loose data cables and terminals between the meter and the metering board or inverter
tbl=51.r5 h=fe9e6fc08424tbl=73.r3 h=5c6dc8a588bdcaused_byc3 verified · fact Low PV production proposed
With S0 meters, PV output below the meter's own consumption stops it from reporting; the message clears once PV power rises
sec=h1 h=c24f2ca4ce92verified by: review-workflowverified on: 2026-10-24
c4 drafted · lead Weak or obstructed wireless signal
tbl=1.r42 h=949377f41b4ftbl=10.r9 h=9888d3b90b8btbl=21.r9 h=9888d3b90b8breview note: support check: partial - Passages advise improving Wi-Fi quality for 7619 but do not explicitly state weak signal as a cause.
c5 drafted · lead Installation error
Meter not placed in the same network as the inverter, or data cables installed wrongly
tbl=1.r41 h=51788795e531tbl=73.r3 h=5c6dc8a588bdc6 drafted · lead Meter configuration error proposed
An unsupported measurement interval, or an S0 meter that does not output values netted across the line conductors
c7 drafted · lead Monitoring network configuration fault
Unauthorized participants on a shared network can disrupt meter communication
sec=h1008 h=ae13d6421050review note: support check: partial - Passage says a separate network prevents disruption by unauthorized participants, but doesn't explicitly frame it as a network configuration fault cause of meter failure.
presents_asc8 drafted · lead Communication loss
sec=h235 h=881ad6c197f7tbl=1.r41 h=51788795e531tbl=69.r1 h=0abbf0ec280esec=h27 h=bbadf76af96ctbl=51.r5 h=fe9e6fc08424tbl=93 h=803db315ba27tbl=15.r7 h=c7515847f49bc9 drafted · lead Continuous zero feed-in reading proposed
The logbook message appears when an S0 feed-in meter has sent no feed-in data for 24 hours
sec=h1 h=c24f2ca4ce92sec=h475 h=b26580197ffcc10 drafted · lead Meter invalid alert proposed
Raised on loss of communication, out-of-bounds or unreasonable readings, or a PT/CT failure flag
tbl=16.r7 h=93406b4603cftbl=19.r5 h=93406b4603cfsec=2.3.5 h=95c425ad14fesec=2.5.4 h=f3201f99d347tbl=16.r7 h=93406b4603cfc11 drafted · lead Unrealistic meter values proposed
c12 drafted · lead Inverter shutdown
Loss of meter communication can stop the battery inverter and the PV inverters, depending on the control mode
sec=h22 h=3ca55ae20307sec=11 h=9e5cf614be07leads_toc13 drafted · lead Export limitation control fault
Active power feed-in limitation cannot work while the feed-in meter is faulty
sec=h475 h=b26580197ffcdetected_byc14 drafted · lead Communication test proposed
sec=h235 h=881ad6c197f7tbl=1.r41 h=51788795e531sec=h27 h=bbadf76af96creview note: support check: partial - Passages show inverter detecting no data from meter, but no explicit 'communication test' method is named.
mitigated_byc15 drafted · lead Communication cable check
tbl=51.r5 h=fe9e6fc08424tbl=73.r3 h=5c6dc8a588bdc16 drafted · lead Network connection check
tbl=1.r41 h=51788795e531tbl=1.r42 h=949377f41b4fsec=h27 h=bbadf76af96cc17 drafted · lead Wireless range extension
Use a Wi-Fi repeater, or connect the inverter to the router by Ethernet
tbl=1.r42 h=949377f41b4ftbl=10.r9 h=9888d3b90b8btbl=21.r9 h=9888d3b90b8bc18 drafted · lead Dedicated communication network proposed
sec=h1008 h=ae13d6421050c19 drafted · lead Inverter parameter adjustment
Set the communication timeout for the point-of-interconnection meter
c20 drafted · lead Meter configuration correction proposed
c21 drafted · lead Energy meter replacement proposed
Replace a defective S0 counter with a supported energy meter
sec=h1 h=c24f2ca4ce92distinguished_fromc22 drafted · lead Energy meter installation position error — told apart by Inverter startup commissioning verification
The meter invalid alert does not catch wiring faults such as reversed CT polarity, so those have to be checked at commissioning
sec=2.3.5 h=95c425ad14fesec=2.5.4 h=f3201f99d347caused_by c7