{"id":829,"date":"2022-03-04T02:34:10","date_gmt":"2022-03-04T02:34:10","guid":{"rendered":"https:\/\/help.noritz.com\/?post_type=ht_kb&#038;p=829"},"modified":"2022-07-14T23:01:20","modified_gmt":"2022-07-14T23:01:20","slug":"error-code-903","status":"publish","type":"ht_kb","link":"https:\/\/help.noritz.com\/index.php\/knowledge-base\/error-code-903\/","title":{"rendered":"Error Code 903"},"content":{"rendered":"\n<p>EC903 or Error Code 903<\/p>\n\n\n\n<p>An error code 903 indicates a combustion abnormality, similar to an <a rel=\"noreferrer noopener\" href=\"https:\/\/help.noritz.com\/index.php\/knowledge-base\/errorcode90\/\" target=\"_blank\">Error Code 90<\/a> but specifically related to the units ability to pull in combustion air or remove exhaust.<\/p>\n\n\n\n<p>Common checkpoints:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Check air inlet for blockage or obstruction.<\/li><li>Check exhaust for blockage or obstruction.<\/li><li>Check the Fan Motor. (ex. Clogging of fan blades, etc.)<\/li><li>Check for sudden environmental changes. (ex. Hurricane, Storm, etc.)<\/li><\/ol>\n\n\n\n<p>If all of those items are normal the unit may need a fan motor adjustment, contact customer care for additional details. An external remote control will be needed to make a fan motor adjustment.<\/p>\n\n\n\n<p><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><\/p>\n","protected":false},"excerpt":{"rendered":"<p>EC903 or Error Code 903 An error code 903 indicates a combustion abnormality, similar to an Error Code 90 but specifically related to the units ability to pull in combustion air or remove exhaust. Common checkpoints: Check air inlet for blockage or obstruction. Check exhaust for blockage or obstruction. Check&#8230;<\/p>\n","protected":false},"author":4,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[26],"ht-kb-tag":[28],"class_list":["post-829","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\/829","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\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/comments?post=829"}],"version-history":[{"count":3,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/829\/revisions"}],"predecessor-version":[{"id":919,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb\/829\/revisions\/919"}],"wp:attachment":[{"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/media?parent=829"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-category?post=829"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/help.noritz.com\/index.php\/wp-json\/wp\/v2\/ht-kb-tag?post=829"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}