Troubleshooting

The messages SolarLayout Rooftop shows, by where you meet them, with what each means and what to do.

SolarLayout Rooftop says what went wrong where it happens: what happened, what to do, and a button for the first thing to try. When a run or a file fails after one that worked, the result of before stays on the screen, marked "Showing the last result". A value outside the usual range is marked with an exclamation mark, never a cross.

The messages below are as the app writes them. A word in angle brackets, such as <file> or <n>, stands for what the app fills in. If a message keeps coming back, write to SolarLayout as Getting help says, with the message word for word and the design's project file.

Anywhere in the app

Saving and opening

Find

Roof and Array

Sun view and Strings

Performance

Handover and Present

Reference

The five steps

Getting help

On this page

Troubleshooting

Anywhere in the app

Energy not computed

Energy not updated

The server could not be reached. Check your connection, then try again.

The server did not answer. Try again in a moment. · The app could not finish this step.

<n> to review

This browser cannot draw the roof in 3D.

The browser stopped drawing the roof in 3D.

The highest is <max>. · The lowest is <min>. · Enter a number from <min> to <max>.

This part of the help did not load. Check the connection and try again. · The picture did not load

Saving and opening

Not saved

The design could not be saved on this device: <reason>.

the app is open in another tab, which blocks the change

That design is no longer on this device.

<reason> The demo is open instead.

The designs on this device could not be read: <reason>.

A name is needed

Choose a project file (.rtd). · The file could not be read. Choose another.

This file is larger than any project file the app saves. Choose another. · text: String should have at most 5000000 characters

The file is not a project file (.rtd): <reason>

The project file cannot be opened: <field>: <reason>

This project file is format <n>. This version reads formats 1 and 2. Open it with a newer version of the app.

The module file <name> (PAN) is not included in this project. Choose it again.

Find

The map is not available

This browser cannot draw the map · The imagery does not load

Address search is not available. Paste coordinates or a maps link.

The address search cannot be reached. Check your connection, then try again.

The address search did not answer. Try again in a moment. · The search failed. Try again.

Nothing found for “<words>”. Try a fuller address, or paste coordinates.

Your location is not available. Allow it in the browser, or search for the address.

These look like coordinates, but they cannot be read.

The latitude comes first, and <n> is more than 90°. Did you mean this?

No footprint known here

The outline crosses itself. Move the corners so that no two edges cross.

This outline covers <area> m². SolarLayout designs one roof at a time, up to 30,000 m² (about 3 MWp). For a larger site, outline each building as its own design.

The corners of a box must make a rectangle.

The roof could not be built. Try again.

<name> is not a KMZ, KML or DXF file. Choose a file with one of these endings.

<file> has no polygon to use as the roof. · <file> has no closed polyline to use as the roof.

<file> is not a KML file that can be read · <file> is not a DXF file that can be read · <file> has no KML file inside.

The app can send a drawing of about 4.7 MB at most. Save this one with only the roof and its obstacles, then choose it again.

<field>: <reason>

Roof and Array

Layout not updated · Layout not computed

The roof outline encloses no area. Give at least three corners that are not on one line. · The roof outline crosses itself. Give the corners in order around the roof.

The outline cannot cross itself. The roof stays as it was.

The file has no height for these obstacles. The app uses 1.0 m.

No module fits on this roof

Row spacing <p> m is less than a row's depth plus 0.3 m. The app uses <q> m.

Unit gap <g> m keeps east-west units free of shade in the shade-free hours.

Voc coefficient outside the usual range

<file> gives no size of the module (Width and Height). The layout needs it: choose a PAN file that has it.

Module not changed

<name> is over 256 KB, larger than any module or inverter file. Choose another.

The app cannot read the file as text: it is in none of utf-8, latin-1, cp1252. · The file could not be read: <reason>. Choose another.

The equipment library did not load. · <file> did not load from the library. Try again.

No module in the library matches “<search>”. · No module in the library fits these filters.

Sun view and Strings

Sun path not updated

Waits for the run

Horizon not counted: the weather for this site came without one · Horizon not counted: this weather has none

No string length fits at <V> V

Too few positions for a string

Your stringing no longer fits. Option <letter> is used.

Below the DC/AC target · Above the DC/AC target · Heavy clipping

MPPT current over its limit, or the limit not known

Current per MPPT not in the inverter file · Not in the OND: IMaxDC <n> A ÷ <m> MPPT. Enter the datasheet value if it differs.

Inverter not changed

A string of <n> does not fit at <V> V · Each inverter needs at least 1 string. Change your option or remove it.

This inverter takes up to <r> V. Raise it only if the site's code allows.

Strings sized to <r> V, this inverter's limit

Performance

Energy not updated · Showing the last result · Try again

The server could not finish this step. Try again. · The run ended before its result arrived. Try again.

Weather not loaded

The weather for this site came without a horizon. The run leaves horizon shading out.

The file is over 3 MB. A year of weather is under 3 MB, even at 15-minute steps. Choose a file of one year.