How to Fix a Boiler with No Hot Water
Quick Answer
Check the thermostat, check the timer, and check the boiler pressure.
How to troubleshoot a Boiler with No Hot Water
A boiler with no hot water is a frustrating problem. This guide covers diagnosing and fixing common causes.
Step-by-Step Fix
- Check the thermostat is set to the correct temperature.
- Check the timer is set for hot water.
- Check the boiler pressure is between 1 and 1.5 bar.
- Check the pilot light is on (if applicable).
- Check the diverter valve is functioning.
- If the issue persists, call a Gas Safe engineer.
Common Error Codes
| Code | Meaning | Resolution |
|---|---|---|
| No hot water | Faulty diverter valve or thermostat | Check diverter valve and thermostat. |
| Error code | Boiler fault | Check the manual for the specific code. |
Frequently Asked Questions
Why is my boiler not producing hot water?
A faulty diverter valve, thermostat, or low boiler pressure.
Can I fix a boiler diverter valve myself?
Only if you are Gas Safe registered.