Troubleshooting Guide

If you encounter any issues with the P1MeterKit, try the following steps:

General Troubleshooting Steps

1. Ensure All Cables Are Securely Connected

   • Verify that the RJ12 cable is securely connected to both the P1MeterKit and the energy meter's P1 port
   • If using USB-C power, ensure it's properly connected

2. Check the Power Source

   • If using RJ12 for power: Verify your meter is DSMR v5 and supports powering devices
   • If using USB-C: Make sure the adapter is plugged into a working outlet

3. Restart the P1MeterKit

   • Unplug all cables, wait 10 seconds, and reconnect

4. Restart Home Assistant

   • Navigate to Settings → System → Restart

5. Update Home Assistant

   • Go to Settings → System → Updates

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Power Issues

LEDs Flashing Rapidly

If the LEDs flash rapidly when connected only via RJ12:

Cause: Your smart meter doesn't provide enough power via the P1 port.

Solution: Connect a USB-C power adapter (5V, 1A).

No LEDs at All

1. Check if the RJ12 cable is properly connected
2. Try USB-C power instead
3. Try a different RJ12 cable
4. Verify the P1 port on your meter is functional

LED Status Guide

LED	Color	Status	Meaning
LED 1	White	On	Powered via USB-C ✅
LED 2	Red	Flashing slowly	Not connected to WiFi/HA — continue setup
LED 2	Red	Flashing rapidly	Startup error — check power
LED 3	Yellow	On	Powered via RJ12 ✅

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WiFi Connectivity Issues

Can't Find the P1MeterKit Hotspot

If the p1meterkit WiFi hotspot doesn't appear:

1. Wait 1-2 minutes after powering on
2. Check if already configured — the hotspot only appears if WiFi is not configured
3. Ensure proper power — LEDs should not be flashing rapidly
4. Try a factory reset if the device was previously configured

Connected to Hotspot but No Captive Portal

1. Open browser manually to http://192.168.4.1/
2. Try a different device (phone vs laptop)
3. Disable mobile data on your phone
4. Try a different browser

Frequent WiFi Disconnections

1. Check WiFi signal strength at your meter location
2. Move closer to router or use a WiFi extender
3. Check for interference from other 2.4 GHz devices
4. Verify router settings:
   • Ensure 2.4 GHz band is enabled (5 GHz not supported)
   • Check if router has client limits

WiFi Network Requirements

Requirement	Supported
2.4 GHz	✅ Required
5 GHz	❌ Not supported
WPA/WPA2	✅
WPA3	⚠️ May have issues
Hidden SSID	✅ (manual entry)
Enterprise (802.1X)	❌

💡 Need a wired connection? Consider the WaterP1MeterKit which supports Ethernet/PoE.

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Data Reading Issues

Energy Data Not Updating

1. Check RJ12 connection — ensure it's firmly connected to the P1 port
2. Verify P1 port — some meters have multiple ports (MBus won't work, only P1)
3. Check meter compatibility — ensure your meter is DSMR 4.x, 5.0, or ESMR 5.0
4. Restart the P1MeterKit — unplug and reconnect

Gas Data Not Showing

Gas meters communicate via MBus protocol with an ID (1-4).

Solutions:

1. Wait at least one hour — gas data updates hourly
2. Check if gas meter is connected to your smart meter
3. Try different MBus ID — see Usage Guide — Gas MBus Configuration

Wrong Readings / Data Seems Incorrect

1. Compare with meter display — check if readings match your actual meter
2. Check unit of measurement — some entities show Wh vs kWh
3. Verify tariff times — tariff 1 vs 2 depends on your energy contract

Solar Production Not Showing

1. Verify your inverter is connected to the grid and feeding back
2. Check Power Produced — this shows real-time production
3. Check Energy Produced Tariff 1/2 — these show cumulative totals

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Home Assistant Issues

Device Not Discovered

If Home Assistant doesn't find the P1MeterKit:

1. Verify WiFi connection — P1MeterKit must be on same network as HA
2. Check ESPHome integration is enabled
3. Add manually:
   • Go to Settings → Devices & Services
   • Click Add Integration → ESPHome
   • Enter the P1MeterKit's IP address

Entities Missing

1. Check the device page in Home Assistant
2. Enable disabled entities — some are disabled by default
3. Restart Home Assistant after adding the device

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LED Indicator Issues

Red Status LED Flashing Slowly

Meaning: Not connected to WiFi network or Home Assistant.

Solution: Follow the Connect to WiFi steps.

Red Status LED Flashing Rapidly

Meaning: Startup error, usually power-related.

Solutions:

1. Connect USB-C power
2. Try a different RJ12 cable
3. Check if P1 port is functional

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Advanced Troubleshooting

Accessing the Web Interface

If you can't connect to WiFi normally:

1. Connect to the p1meterkit hotspot
2. Navigate to http://192.168.4.1/
3. Configure WiFi from the web interface

Firmware Updates

Ensure you're running the latest firmware:

• Check for updates in Home Assistant's ESPHome integration
• Or flash via USB-C — see Firmware Guide

Factory Reset

To completely reset the P1MeterKit:

1. Via USB-C flashing:
   • Connect to computer via USB-C
   • Flash the latest firmware from smarthomeshop.io/firmware
   • This removes all configuration including WiFi credentials

Checking Logs

For detailed debugging:

1. Adopt the device in ESPHome addon
2. View logs from the ESPHome dashboard
3. Look for error messages or connection issues

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Network Communication & Privacy

100% Local Operation

The P1MeterKit works entirely locally. All sensor data stays on your local network:

Data	Location
✅ Energy consumption	Local
✅ Gas consumption	Local
✅ Solar production	Local
✅ Home Assistant communication	Local

External Communication

The only external communication is for firmware update checks:

What	Where	Why
Version check	ESPHome/GitHub	Check if new firmware is available

No sensor data is ever sent externally.

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Additional Resources

• 📖 Installation Guide — Step-by-step setup
• 📖 Usage Guide — Energy Dashboard & automations
• 📖 FAQ — Frequently asked questions
• 💬 Discord Community — Get help from the community

If you continue to experience problems after trying these steps, please reach out on Discord for personalized assistance.