32
Moderate
Rinnai · Tankless Water Heaters
Outgoing water temperature sensor fault.
Quick Answer
Error code 32 on your Rinnai Tankless Water Heaters means: Outgoing water temperature sensor fault.. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Inspect sensor harness and connector condition.
2
Clean scale if present around sensing area.
3
Measure sensor resistance against chart.
4
Replace sensor if readings are out of range.
5
Retest under normal hot-water demand.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Related Error Codes