{"article":{"id":35698217467927,"url":"https://switchbot.zendesk.com/api/v2/help_center/en-us/articles/35698217467927.json","html_url":"https://support.switch-bot.com/hc/en-us/articles/35698217467927-What-to-Do-If-SwitchBot-Smart-Radiator-Thermostat-Body-Displays-Er-and-Is-Not-Functioning","author_id":375553353294,"comments_disabled":false,"draft":false,"promoted":false,"position":0,"vote_sum":-6,"vote_count":8,"upvote_count":1,"downvote_count":7,"section_id":34772901920663,"created_at":"2025-10-17T11:23:23Z","updated_at":"2026-11-01T17:42:25Z","name":"What to Do If SwitchBot Smart Radiator Thermostat Body Displays \"Er\" and Is Not Functioning?","title":"What to Do If SwitchBot Smart Radiator Thermostat Body Displays \"Er\" and Is Not Functioning?","source_locale":"en-us","locale":"en-us","outdated":false,"outdated_locales":[],"edited_at":"2025-11-17T08:41:54Z","user_segment_id":null,"permission_group_id":882873,"content_tag_ids":[],"label_names":[],"body":"<ul><li class=\"ck-list-marker-bold\" data-list-item-id=\"e0a0c5ffef6e05c9d530f153a4d6427de\"><strong>Related Product: SwitchBot Smart Radiator Thermostat</strong></li></ul><p><span class=\"wysiwyg-font-size-large\">1. The working temperature of the Smart Radiator Thermosta valve is 0~50℃ (32-122℉). When your device is in an environment below zero degrees for a long time, it will display an \"er\" error to remind you. Please place the device in an environment above zero degrees for a few minutes to restore normal temperature display.</span></p><p><span class=\"wysiwyg-font-size-large\">2. If the issue persists, please contact us via Feedback in SwitchBot App. When contacting us, please provide with the following information:</span></p><ul><li class=\"ck-list-marker-font-size-big\" data-list-item-id=\"ea9fbdeffa409806616ce11e7e52fe456\"><span class=\"wysiwyg-font-size-large\">A photo of the device display screen code</span></li></ul>","user_segment_ids":[]}}