Written by
Hannah Ostrowski Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeH3
ApplianceDehumidifier
H3 on the display
The compressor’s overload protection has kicked in. The support guide puts H3 and E5 together as one entry, and it gives owners four things to work through.
Is there proper clearance around the unit where it stands?
Is the filter dirty? Clean it when it needs that.
Does the room stay between 41F and 89F?
Pull the power cord and let the machine cool down.
If the code comes back
The guide then points to a service visit. Installed within the last 30 days? That goes to the installer. Older than that, support will schedule a service visit.
Dehumidifier repair in San Francisco and the Bay Area
If H3 returns after the clearance, filter and cooling checks, call (415) 319-6371 from San Francisco or elsewhere in the Bay Area. Frigidaire dehumidifier repair has more about the work, and it helps to name the steps you finished.
Model compatibility: Frigidaire reuses codes across series and model years, so H3 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Compressor overload protection.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Frigidaire appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Frigidaire appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
