> ## Documentation Index
> Fetch the complete documentation index at: https://docs.circuit.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Field technical support

> How field technicians can use Circuit to find troubleshooting steps, installation procedures, and part numbers on-site.

As a field technician, you often need fast answers while on-site with a customer. Circuit gives you instant access to your workspace's technical documentation through a chat interface.

## Common scenarios

### Troubleshooting an error code

Instead of searching through multiple PDF manuals, describe the situation:

> The XYZ-500 unit at the customer site is displaying error code E-47. The unit was installed in March 2024 and has been running fine until today. What should I check?

The agent will find the relevant troubleshooting procedure, walk you through diagnostic steps, and cite the source manual so you can pull it up if needed.

### Finding installation procedures

When you need step-by-step guidance for a specific configuration:

> I need to install the XYZ-500 in a ceiling-mounted configuration in a room with limited clearance (2.4 meters). What are the clearance requirements and mounting steps?

Include the specific model, mounting type, and any site constraints to get a procedure tailored to your situation.

### Looking up part numbers and specifications

> What replacement filters are compatible with the XYZ-500? I need the part numbers for both the standard and high-capacity options.

> What is the torque specification for the mounting bolts on the XYZ-500 bracket assembly?

### Checking maintenance procedures

> The customer wants to know the recommended maintenance schedule for their XYZ-500. They run it about 16 hours a day in a dusty environment. What should they be doing and how often?

The environmental context (dusty, heavy use) helps the agent provide adjusted intervals rather than just the standard schedule.

## Tips for field use

<Tip>
  **Be specific about the model and conditions.** Agents work best when you include the exact model number, installation type, operating conditions, and any symptoms or error codes.
</Tip>

* **Include the environment**: temperature, humidity, dust levels, and operating hours affect recommendations
* **Mention what you've tried**: "I already replaced the filter and the error persists" helps the agent skip to the next diagnostic step
* **Ask for safety warnings**: "Are there any lockout/tagout requirements before I open the access panel?"
* **Request part numbers explicitly**: the agent can pull these from catalogs and manuals if you ask

## Example chat

> **You:** I'm at a customer site and the XYZ-500 is making an unusual vibration noise during startup. It started after they replaced the drive belt last week. The unit is model year 2023.
>
> **Agent:** Based on the XYZ-500 service manual (Section 4.3), unusual vibration after belt replacement is typically caused by... \[detailed response with steps and citations]
>
> **You:** The belt tension checks out fine. What else could it be?
>
> **Agent:** If belt tension is correct, the next items to check are... \[follow-up response building on previous context]