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    4. what does p 1 mean on my tankless heater mean.
    what does p 1 mean on my tankless heater mean.

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    0  Views: 501 Answers: 1 Posted: 12 years ago
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      P1 means tankless water heater is not sensing enough hot water volume being pulled by the fixture either shower head or faucet. The solution is remove any water saving device from fixture this could be a filter or rubber washer around green filter. Heater is not design for this device and reduce the hot water volume. Another solution is clean shower head or faucet outlet with CLR soultion. Source: http://www.fixya.com/support/t8555196-get_p1_error_code_rheem_tankless 



      12 years ago. Rating: 0
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