E19
Crown
Temperature Differential Error
Boiler shows E19; may indicate sensor calibration or delta-T error
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Supply and return sensors reading implausible values, Poor water flow through heat exchanger, Sensor out of calibration
How to Fix / Troubleshooting
Safety: Turn off power before handling sensors or wiring.
- Compare sensor readings: Many Crown controls display supply and return temperatures. If they differ wildly from actual pipe temperatures (feel by hand carefully), a sensor may be faulty.
- Check flow: Ensure all valves are open and circulators are running. Clean strainers and bleed air as needed.
- Inspect sensors: Confirm both supply and return sensors are properly mounted and wired.
- Reset: Restore power and reset. If E19 persists, a technician should test and replace the faulty sensor and verify system flow.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Supply Temperature Sensor (NTC)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements