{"id":930888,"date":"2026-08-25T16:42:03","date_gmt":"2026-08-25T20:42:03","guid":{"rendered":"https:\/\/cetechsupport.com\/?p=930888"},"modified":"2026-09-22T13:41:29","modified_gmt":"2026-09-22T17:41:29","slug":"37mgra-ph-91","status":"publish","type":"post","link":"https:\/\/cetechsupport.com\/es\/37mgra-ph-91\/","title":{"rendered":"37MGRA PH 91 (Low temperature protection of evaporator diagnosis and solution)"},"content":{"rendered":"<div class=\"diagnostic-code-summary\">\n<h2>C\u00f3digos de diagn\u00f3stico cubiertos<\/h2>\n<p><strong>PH 91<\/strong><\/p>\n<p>Description: When evaporator coil temperature is lower than 0\u00b0C in cooling mode or drying mode, the unit stops. It starts again only when the evaporator coil temperature is more than 5\u00b0C. Recommended parts to prepare: Connection wires, Evaporator coil temperature sensor (T2), Indoor main PCB Troubleshooting and repair:<\/p>\n<\/div>\n<h2>Flujo de soluci\u00f3n de problemas<\/h2>\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cetechsupport.com\/wp-content\/uploads\/2026\/08\/37mgra-v5-37mgra-ph-91-1.png\"><img decoding=\"async\" class=\"wp-image-931019\" src=\"https:\/\/cetechsupport.com\/wp-content\/uploads\/2026\/08\/37mgra-v5-37mgra-ph-91-1.png\" alt=\"PH 91 (Low temperature protection of evaporator diagnosis and solution) workflow\" \/><\/a><figcaption>PH91 (Low temperature protection of evaporator diagnosis and solution) workflow<\/figcaption><\/figure>\n<h2>Pruebas de diagn\u00f3stico relacionadas<\/h2>\n<ul>\n<li><a href=\"https:\/\/cetechsupport.com\/es\/?p=930848\">Verificaci\u00f3n del sensor de temperatura 37MGRA<\/a><\/li>\n<\/ul>\n<p><small><em>Fuente del flujo de trabajo: manual de servicio original 37MGRA-02SM PDF. Nombres de c\u00f3digos de error contrastados con 37MGRA-04SI.<\/em><\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>Troubleshooting workflow for PH 91.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[241],"tags":[243,305],"class_list":["post-930888","post","type-post","status-publish","format-standard","hentry","category-37mgra-diagnostic-codes","tag-37mgra","tag-ph-91"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Carrier Enterprise","author_link":"https:\/\/cetechsupport.com\/es\/author\/joshg\/"},"uagb_comment_info":0,"uagb_excerpt":"Troubleshooting workflow for PH 91.","_links":{"self":[{"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/posts\/930888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/comments?post=930888"}],"version-history":[{"count":5,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/posts\/930888\/revisions"}],"predecessor-version":[{"id":931900,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/posts\/930888\/revisions\/931900"}],"wp:attachment":[{"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/media?parent=930888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/categories?post=930888"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cetechsupport.com\/es\/wp-json\/wp\/v2\/tags?post=930888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}