What it means
On two-digit displays it shows as E4 then 58. Samsung's Korean service pages treat E475 / C475 (the second fan on units with two outdoor fans) the same way. On Samsung EHS heat pumps, the control kit manual lists E458 as 'OUTDOOR UNIT fan1 error' and E475 as 'fan2 error', so the same checks apply.
What to check, in order
- Switch it off first
Turn the system off at its breaker or isolator before you go near the outdoor unit.
- Clear snow and debris
Samsung's service page says to remove snow from the outdoor unit and look for debris. Only clear what you can reach from outside without opening any panels.
- Switch back on once
Wait about a minute, then switch back on and run the unit.
- Don't keep resetting
If the same code keeps coming back, Samsung says it is better to have an engineer inspect the unit than to reset it repeatedly.
When to call an engineer
Call an engineer if E458 returns after a reset and the fan is clear. They will check the outdoor fan and its wiring.
Quick answers
What does the Samsung E458 error code mean?
The fan in the outdoor unit is not spinning at the right speed. Samsung says momentary electrical noise can also trigger it as a one-off. On two-digit displays it shows as E4 then 58. Samsung's Korean service pages treat E475 / C475 (the second fan on units with two outdoor fans) the same way. On Samsung EHS heat pumps, the control kit manual lists E458 as 'OUTDOOR UNIT fan1 error' and E475 as 'fan2 error', so the same checks apply.
Can I fix Samsung E458 myself?
Easy (about 10 minutes). Start with: switch it off first; clear snow and debris; switch back on once. Call an engineer if E458 returns after a reset and the fan is clear. They will check the outdoor fan and its wiring.
Is Samsung E458 worth repairing?
Worth fixing. Snow, debris or a one-off glitch can cause it. If it keeps returning, the outdoor fan needs an engineer.
Checked against
- Samsung Electronics Service (Korea): E458, C458, E475, C475 on an air conditioner (Korean)
- Samsung Electronics Service (Korea): Home Multi shows E458 / C458 (Korean)
- Samsung Electronics Service (Korea): wall-mounted AC shows E4 / C4 (how three-digit codes are shown) (Korean)
- Samsung AR10RYFT / AR13RYFT wall-mounted air conditioner service manual (PDF), 'Display Error and Check Method' (copy on notice-facile.com)
- Samsung System Air Conditioner Single for Europe (R32, heat pump) service manual (PDF, copy hosted by a retailer)
- Samsung MIM-E03CN EHS control kit installation manual (PDF), error codes part 1 (ManualsLib copy)
- Samsung MIM-E03CN EHS control kit installation manual (PDF), error codes part 2 (ManualsLib copy)
Last reviewed October 2026. Manufacturers update their pages, and your manual is the final word. Spotted a mistake? Email contact@appliance-error-codes.com.