{"id":134,"date":"2021-04-12T22:13:37","date_gmt":"2021-04-12T22:13:37","guid":{"rendered":"https:\/\/knowall.dev19.bigideas.io\/?post_type=ht_kb&#038;p=134"},"modified":"2022-03-04T19:09:20","modified_gmt":"2022-03-04T19:09:20","slug":"errorcode91","status":"publish","type":"ht_kb","link":"https:\/\/help.noritz.com\/index.php\/knowledge-base\/errorcode91\/","title":{"rendered":"Error Code 91"},"content":{"rendered":"\n<p><strong>EC91 or Error Code 91<\/strong><\/p>\n\n\n\n<p>An error code 91 means incorrect gas type.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>For new installs:<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>Verify the unit is provided the correct gas type.<\/li><li>Verify the unit is installed according to the guidelines found in the installation manual either included with the unit or downloaded from our support site here: <a rel=\"noreferrer noopener\" href=\"http:\/\/support.noritz.com\/technical-literature\" target=\"_blank\">http:\/\/support.noritz.com\/technical-literature<\/a><\/li><\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>For existing installations:<\/strong><\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>Verify the unit is provided the correct gas type.<\/li><li>Verify the unit is installed according to the guidelines found in the installation manual either included with the unit or downloaded from our support site here: <a rel=\"noreferrer noopener\" href=\"http:\/\/support.noritz.com\/technical-literature\" target=\"_blank\">http:\/\/support.noritz.com\/technical-literature<\/a><\/li><li>Verify that the manifold gas pressures are correctly set. This should be done by a service rep according to the service manual for the unit.<\/li><li>Perform a cleaning of the fan, burner and heat exchanger fins if there is dust, dirt, lint or other debris building up.<\/li><\/ol>\n\n\n\n<p><strong><strong>For further technical assistance call 866-766-7489 or use our <a rel=\"noreferrer noopener\" href=\"https:\/\/contractorfinder.noritz.com\/contractors?installer=false&amp;servicer=true\" target=\"_blank\">Contractor Locator<\/a> to find a local service representative.<\/strong><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>EC91 or Error Code 91 An error code 91 means incorrect gas type. For new installs: Verify the unit is provided the correct gas type. Verify the unit is installed according to the guidelines found in the installation manual either included with the unit or downloaded from our support site&#8230;<\/p>\n","protected":false},"author":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[26],"ht-kb-tag":[28],"class_list":["post-134","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-error-codes","ht_kb_tag-errorcodes"],"_links":{"self":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/comments?post=134"}],"version-history":[{"count":4,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/134\/revisions"}],"predecessor-version":[{"id":852,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/134\/revisions\/852"}],"wp:attachment":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/media?parent=134"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-category?post=134"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-tag?post=134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}