Daikin Mini-Split E5 Error: Compressor Overload

Quick Answer

Daikin E5 is a compressor overload protection trip that occurs when sustained current draw exceeds the rated limit. Unlike L5 which is an instant spike, E5 builds over time - the compressor runs hot for several minutes before the thermal overload trips.

When I see an E5 on a Daikin, I immediately look for anything choking that outdoor unit. This code fires because the compressor is physically overheating, usually from fighting against a clogged coil or a dying fan motor. It's a protective shutdown that saves you from a multi-thousand dollar compressor replacement, but it means the system is under serious thermal stress. Don't just reset it and walk away. You'll be back in two weeks doing the same thing.

DaikinMinisplitSeverity: highDifficulty: intermediate70% DIY Success

Time to Fix

30–180 min

Difficulty

intermediate

Parts Cost

$10 – $200

Tools Needed

Clamp ammeter (200A AC range minimum), Multimeter set to AC voltage (200-600V range)

What Does the E5 Code Mean?

Think of E5 as your system running a fever. It's not an electrical short, it's a sign that the compressor is drawing too much current while trying to push heat outside. If the unit runs for 10-15 minutes before failing, you're probably looking at airflow or voltage, not a dead compressor. I dealt with three of these last summer alone during a single brownout week in the same neighborhood. Pretty much always fixable if you catch it early.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Dirty outdoor condenser coil40%

Outdoor fan motor not running (related E7)24%

Low supply voltage during peak demand14%

Overcharged system12%

Compressor bearing wear increasing friction10%

Symptoms You May Notice

The indoor display shows E5 and everything goes silent, no compressor noise, no airflow from the head unit.
Outdoor unit runs for 5 to 15 minutes, then shuts off hard, sometimes with a loud click from the contactor.
You can feel radiant heat coming off the outdoor cabinet from a few feet away and the refrigerant lines near the compressor are almost too hot to touch.
Right before it trips, the compressor starts making a low grinding or laboring hum that's noticeably louder than normal operation.
Cooling output drops in the last few minutes before shutdown, like the system is running but barely keeping up.

Can you reset a Daikin minisplit to clear the E5 code?

Kill the power at the main outdoor disconnect or breaker for at least 30 minutes. A tripped internal overload is a physical bi-metal switch that needs time to cool down and click back into place. Simply toggling the power for a minute often is not enough to reset the thermal circuit. After it cools, restore power and use the remote to clear the code.

Tools Required for Diagnosis

Clamp ammeter (200A AC range minimum)Multimeter set to AC voltage (200-600V range)Garden hose with adjustable spray nozzleCommercial coil cleaner (Nu-Calgon 4171-75 or similar)Phillips #2 screwdriver1/4 inch nut driver or hex driver setCapacitor tester or multimeter with capacitance mode

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Daikin Outdoor Fan MotorModel-specific · $80–$200	Model-specific	$80 – $200
Coil cleaner concentrateN/A · $10–$20	N/A	$10 – $20

Frequently Asked Questions

Can E5 damage my compressor permanently?

Repeated E5 trips are like redlining your car engine over and over. The internal overload is a safety net, but the heat generated before it trips cooks the compressor oil and thins out the lubrication. Ignore this code and keep resetting it without fixing the root cause, and you'll eventually burn out the motor windings. That turns a dirty coil problem into a full compressor replacement or new unit situation. The overload saves you once or twice. It won't save you forever.

My Daikin shows E5 only on the hottest days. Is that normal?

Not normal, but it's a really specific clue. If your unit only fails above 100 degrees, the outdoor coil is probably just dirty enough to handle normal days but can't keep up when heat rejection demand peaks. The other thing I always check is recirculating air, where the hot exhaust from the fan bounces off a wall, fence, or overhang and gets sucked right back into the coil inlet. The unit basically chokes on its own hot air. Sometimes moving a fence panel or trimming a shrub actually fixes it completely.

E5 and E7 appearing together, what does that mean?

The fan motor (E7) is almost certainly your problem if you see both codes together. Without that fan pulling air through the coil, refrigerant pressure and temperature spike fast. The compressor tries to push through it, overheats, and throws the E5. Always fix the fan first. The compressor is probably just reacting to zero airflow and isn't actually failing on its own. Fix the fan and the E5 usually disappears with it.

How much does it cost to fix an E5 error?

Honestly depends on the cause. Dirty coil is basically free if you do it yourself. Fan capacitor runs $15-40 in parts, maybe $150-200 with a service call. Fan motor replacement is $150-300 in parts plus labor. If the compressor itself is failing, that's where it gets ugly. Parts alone run $800-1,500 on most Daikin units, and most techs will tell you to just replace the outdoor unit if it's more than 6-7 years old. The diagnosis matters a lot here. Don't throw money at parts until you know what's actually wrong.

How long should I wait before restarting after an E5?

At least 30 minutes, and I mean actually wait. The thermal overload inside the compressor is a physical bimetal switch that has to cool down and physically snap back into position. A lot of people flip the breaker for 30 seconds and wonder why it trips again almost immediately. The compressor shell stays hot for 20-30 minutes after shutdown. Restart too soon and the overload trips again right away. Wait the full 30, restart, then actually time how long it runs before tripping again. That runtime tells you a lot about what's going on.

Related Daikin Minisplit Error Codes

Code: HUBDaikin Mini-Split Error Codes: Complete Guide Code: L5Daikin Mini-Split L5: Compressor Overcurrent Code: E7Daikin Mini-Split E7: Outdoor Fan Motor Fault Code: U0Daikin Mini-Split U0: Low Refrigerant or Overcurrent

Models Known to Experience E5 Errors

This repair applies to most Daikin minisplits with this error code. Common model numbers include:

FTXS09LVJU, FTXS12LVJU, FTXM15QVJU, FTXM18QVJU, FTXM24QVJU, RXS09LVJU

Written by

Raj Patel

HVAC & Water Systems Specialist · 15 years experience

Last verified for technical accuracy on March 15, 2026