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Rinnai water heater error 25
Condensate drain blocked. The condensate trap or drain line is full.
Moderate · you can check this yourself
25
Meaning: Condensate drain blocked
What causes 25
The condensate trap or drain line is full.
What to do
Check the condensate line is not kinked, frozen or clogged.
Can I fix it myself?
Often, yes. Try the check below first — it costs nothing and frequently clears the code.
If the code comes back
Book a visit and add the code to the booking. A technician arrives knowing which parts to bring, diagnoses the water heater for a flat $89 and gives you an exact quote before doing any work.
Same water heater