20 Most Recent Noritz 6.9 Gallon Residential Tankless Water Heater - N-069M - Page 3 Questions & Answers

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Got a noritz combi unit. It's flashing code 55 there is no code 55 I can find.

I can only find a 54 low water pressure in there codes try the company help line on the wed site
1/18/2018 4:36:11 PM • Noritz Water... • Answered on Jan 18, 2018
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Noritz water heater error code 99

MAke sure your flu is not making any 90degree turns. Use 45degree turns only. Error 99 is a combustion error. Usually referring to a blocked/obstructed flu. That said, a flu wit a lot of 90degree turns can act like restrictions to tankless heaters. If the flu i straight and clear, then you have a burner problem. Somethign you want Noritz to deal with.
1/4/2018 8:49:53 PM • Noritz Water... • Answered on Jan 04, 2018
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