Warning code14
Heat Exchanger Overheat means heat exchanger switch resistance is measured and abnormal, or there are hot spots indicating scale build-up requiring flushing or hard water treatment. The manual lists no action for this code.
- Model
- Rinnai RUR199e / RUR160e / RUR199i / RUR160i
- Display shows
- Heat Exchanger Overheat (14)
- Type
- Warning code
- Source
- Manual p. 57
What 14 means
Heat Exchanger Overheat p. 57
Common causes
- Measure resistance of heat exchanger switch.* p. 57
- Check heat exchanger surface for hot spots which indicate blockage due to scale build-up. p. 57
- Refer to instructions in manual for flushing heat exchanger. Hard water must be treated to prevent scale build up or damage to the heat exchanger. p. 57
- Ensure it is not forced Hi setting. p. 57
If 14 is still not resolved
- Call your gas supplier from a neighbor’s phone. Follow their instructions. p. 1 “Immediately call your gas supplier from a neighbor ’s phone. Follow the gas supplier ’s instructions.”
- If you cannot reach your gas supplier, call the fire department. p. 1 “If you cannot reach your gas supplier, call the fire department.”
Open the manual at page 57
All RUR199e / RUR160e / RUR199i / RUR160i error codes
Manual details & download
This page summarises what the manufacturer’s manual says about 14; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Rinnai. Found a mistake? Report an error.