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Rheem water heater error P1
Not enough water flow. The flow is below the minimum needed to fire the burner.
Minor · you can check this yourself
P1
Meaning: Not enough water flow
What causes P1
The flow is below the minimum needed to fire the burner.
What to do
Open the hot tap further and clean the inlet water filter.
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.
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