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From a fault indication to the checks your manual lists.

A guide takes the installer through the checks your manual gives for a fault indication, in your order. At the end of those checks, or whenever the installer asks, the conversation goes to your team.

Book a walkthroughSee how it works

A fault indication on Model A

QUESTION

The first check your manual lists for this indication

  1. 1. Fault cleared
  2. 2. Still showing
Still showing

QUESTION

The second check your manual lists

  1. 1. Fault cleared
  2. 2. Still showing
Still showing

ROUTE TO HUMAN

The manual has no further check. The installer is passed to your technical team.

A code says what is wrong. A guide says what to check.

A lookup tells the installer what a code means. A guide takes them through your manual’s checks for it and hands over to your team. It works alongside the fault table or service app you already supply.

  • A fault-code list or lookup

    Gives
    What the indication means.
    Needs
    The installer to find the right entry for the right product.
    Ends
    With the meaning, or a list of possible causes.

  • A service tool that reads the product

    Gives
    The product’s own record. Two door control manuals list a service tool as an accessory. One of them describes the tool reading the fault memory and the current programming, with a fault guide alongside.
    Needs
    The tool on site, connected to the product.
    Ends
    With what the product recorded.

  • A Lingo guide

    Gives
    The checks your manual lists for that indication, in your order, one question at a time.
    Needs
    A phone with WhatsApp, Teams, web or email, and the installer’s answers.
    Ends
    With a fix, or with your team, who have the whole conversation.

Every path ends in a fix or with your team.

A guide puts your manual’s checks to the installer one question at a time, at any hour. Each path ends in numbered fix steps or in a handover to a person, and the installer can ask for a person before the end.

On a handover your team is notified by email. They reply in the same WhatsApp conversation, with the earlier messages visible. Each conversation is kept with the installer’s name and number, the product and the guide used.

A service engineer stands beside an industrial roller shutter door and its wall-mounted control box and reads his phone, with a tool bag open on the floor.

Your team approves every check an installer is sent.

Lingo drafts a guide for each indication from your fault table. Your technical team checks it against the manual, edits it and publishes it. In the two door control fault tables we read, the remedies are largely measurements and inspections, and a guide puts them to the installer in your order.

Lingo works from the indication the installer types and the answers they give. Your team chooses, path by path, whether a guide gives a remedy or routes the installer to a person, and a person is always one message away.

Access can be limited to phone numbers you approve. Pricing is by the number of products, with no limit on installers or conversations.

Source, read 8 October 2026: two current door control manuals from two manufacturers.

Questions manufacturers ask about fault codes

We already publish a fault-code list. What does a guide add?

A list tells the installer what a code means. A guide carries on to the checks your manual gives for that indication, one question at a time, and ends with a fix or with your team, who see the whole conversation. It runs on WhatsApp on any phone, with no extra hardware or login.

We supply a service tool that reads the fault memory. Where does Lingo fit?

Beside it. The service tool reads what the product recorded. Lingo takes the installer through your manual’s checks from the indication they type, on the phone they already carry, and hands over to your team.

What does our team get when a guide hands over?

An email to say an installer has asked for a person. They reply in the same WhatsApp conversation, with the earlier messages visible, so they can see which product and guide were involved and what the installer answered.

Industry pages

Send us one manual with a fault table.

We’ll convert it and show you your own guide in a 15-minute walkthrough.

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