We are sorry to hear this ! Sometimes, frost appears on the coils of the unit. This happens when the dehumidifier has been recently turned on in low room temperatures (usually below 41°F (5°C)).
This is normal. Frost will disappear in an hour or so after the dehumidifier is switched off. Our customer support team will be able to look into your concerns and troubleshoot for you. Please call us at 1-800-474-2147, Monday - Friday 8:30 AM - 5:30 PM (EST), or send us an email at usinfo@jmatek.com with the reference code number THA0720. We look forward to making this right for you. Thank You !