Truma Control App Support
Your complete guide to monitoring and controlling your Truma heating system
Quick Start Guide
Download Truma Control from the App Store on your iPhone or iPad.
Go to Settings tab → Enter your MQTT broker details (host, port, credentials).
Tap "Save and Connect" → Check MQTT status indicator (green = connected).
Use the three tabs to control temperature, hot water, and power settings.
App Features
- Real-time Monitoring - Live temperature updates
- Battery Status - Voltage monitoring with visual indicator
- Error Code Display - Detailed error descriptions with solutions
- Energy Mix Control - Switch between Gas, Electric, or Mixed mode
- Hot Water Control - Set water temperature (ECO/60°/BOOST)
- Background Operation - Maintains connection when app is in background
- Dark/Light Mode - Automatic theme switching
- Debug Log - Detailed connection logs for troubleshooting
System Requirements
Hardware
- Truma Combi heating system with MQTT interface
- MQTT broker (e.g., Mosquitto, HiveMQ, EMQX)
- Network connectivity between iOS device and MQTT broker
Software
- iOS 15.0 or later
- iPhone, iPad, or iPod touch
- MQTT broker configured and accessible
Troubleshooting Common Issues
Connection Problems
• Verify broker hostname/IP is correct
• Check port number (default: 1883 for non-TLS, 8883 for TLS)
• Ensure broker is running and accessible from your network
• Check username/password if authentication is required
• Check Wi-Fi/cellular signal strength
• Verify MQTT broker is stable
• Enable "Background App Refresh" in iOS Settings
Common Error Codes
Tap any error code in the app for detailed information:
App Issues
• Force close and restart the app
• Update to latest version from App Store
• Restart your iOS device
• Check for iOS updates
• Verify MQTT connection is active (green indicator)
• Check MQTT topics are being published by your Truma system
• Review Debug Log in Settings for incoming messages
Frequently Asked Questions
General Questions
A: Yes, Truma Control is completely free with no in-app purchases or subscriptions.
A: Yes, if your MQTT broker is on your local network. Internet is only required for remote access.
A: All data stays on your device. We don't collect any personal information. See our Privacy Policy.
Technical Questions
A: Yes! Enable "Use TLS" in Settings and use port 8883 (or your custom TLS port).
A: We recommend Mosquitto or EMQX. Consult your broker's documentation for setup instructions.
A: To maintain MQTT connection for real-time monitoring when the app isn't active.
Need More Help?
Can't find what you're looking for? Contact us directly:
Typical response time: 24-48 hours during business days.