Daikin Mini-Split Won't Turn On: Power and Startup Fixes

Quick Answer

When a Daikin mini-split will not turn on at all, the most common cause is a tripped breaker or blown fuse - not a complex component failure. Daikin residential mini-splits receive all power at the outdoor unit, which then feeds the indoor unit through the interconnecting cable. This means a tripped outdoor breaker kills both units simultaneously.

A completely dead Daikin is almost always a power problem, not a dead compressor. Since the outdoor condenser is the power hub for the whole system, one tripped breaker kills everything at once. Ignore it long enough in July and you're in trouble. I usually solve this in under 10 minutes. But if the fuse on the control board keeps blowing after you replace it, something deeper is shorted and you need to stop and call someone.

DaikinMinisplitSeverity: high80% DIY Success

Time to Fix

5–60 min

Difficulty

beginner

Parts Cost

$2 – $60

Tools Needed

Phillips #2 screwdriver, Flathead screwdriver (small, for fuse holder cap)

Daikin Mini-Split Won't Turn On: Power and Startup Fixes

Before you call for service, know this: Daikin systems have a built-in protection delay. Flip that breaker back on and the unit might just sit there silent for three to five minutes before anything happens. I always start by checking the little LED on the indoor unit's front panel. No glow at all? That's a high voltage power issue, not a remote problem. And honestly it's probably something you can fix yourself in about 15 minutes.

Most Likely Causes

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

Outdoor unit breaker tripped40%

Disconnect box switch off24%

Outdoor board fuse blown14%

Timer delay set on remote12%

Remote batteries dead10%

Symptoms You May Notice

The indoor unit display is completely blank, no numbers, no mode icons, nothing at all, like the whole thing is unplugged.
You press every button on the remote and there's zero response from the unit, no beep, no click, nothing.
Both the indoor and outdoor units are totally silent. No fan hum, no startup sounds, no compressor noise.
That little green or blue standby LED on the front of the indoor unit that's normally always on isn't lit.
The outdoor condenser is completely still. No fan movement, no indicator lights, nothing happening at all.

Can you reset a Daikin minisplit to clear the WONT-TURN-ON code?

Flip the dedicated mini-split breaker fully OFF and leave it for a solid minute so the capacitors discharge completely. Then flip it back ON. Head out to the outdoor disconnect box and make sure the pull-out block or toggle switch is fully seated. Don't immediately grab the remote after flipping the breaker. Wait at least five minutes for the system to initialize before you try anything. If it's still totally dead after that, try the emergency button inside the indoor unit's front cover before assuming it's a board issue.

Tools Required for Diagnosis

Phillips #2 screwdriverFlathead screwdriver (small, for fuse holder cap)Digital multimeter (continuity and voltage testing)Non-contact voltage testerFlashlight or headlampPen or toothpick (for emergency button)Fresh AA or AAA batteries

Diagnostic Checklist

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

Did the fix not work?

If the problem comes back after following these steps, a component has permanently failed and needs replacement. Check the specific error code your minisplit is showing:

HUB Error →NOT-WORKING Error →RESET Error →

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 Remote ControlBRC4C65 · $30–$60	BRC4C65	$30 – $60
Outdoor board fuseVarious · $2–$5	Various	$2 – $5
AAA batteries for remoteN/A · $3–$5	N/A	$3 – $5

Frequently Asked Questions

Where is the Daikin emergency start button?

Lift the front grille of your indoor unit just like you're going to clean the filters. Look toward the bottom right side of the internal plastic frame. There's a small, often recessed button. You'll probably need a pen or toothpick to push it. I use this button to bypass the remote entirely on every diagnostic call. If the unit beeps and starts blowing air when you press it, the system has power and the main board is working fine. That tells you the problem is 100% in the remote or the IR receiver, not the actual mini-split.

My Daikin breaker keeps tripping. Why?

If the breaker trips right when the outdoor fan or compressor tries to start, you've probably got a grounded compressor or a shorted inverter board. I've also found that ants and even small geckos crawl into the outdoor electrical cabinet and short out the terminals, happens more than you'd think in warm climates. Don't force the breaker to stay on. That's a safety feature doing its job, and bypassing it risks a fire or permanently frying the inverter board, which is a $400-$800 part. If it trips consistently, it needs a tech with a clamp meter.

Can I use a universal remote for my Daikin?

Most cheap universal remotes from big box stores won't work with Daikin because their IR codes are proprietary and pretty specific. You can find Daikin-specific aftermarket remotes online that work well, but I always recommend the OEM BRC4C65 for reliability. Runs about $30-$50. If you're in a pinch right now, check if your smartphone has an IR blaster since some Android phones have them, or use the Daikin One+ smart hub app if your system has Wi-Fi capability built in.

How long does a Daikin mini-split take to start after turning the breaker back on?

Give it three to five minutes minimum after restoring power. Daikin's inverter systems have a startup delay built in to protect the compressor from rapid power cycling. I had a homeowner call me last Tuesday convinced their unit was completely dead, but it was just sitting in that initialization window. If it's been more than 10 minutes with zero response, no display, no LEDs, no fan sound from either unit, then yeah, that's when you start digging into the power side with a multimeter.

My indoor unit has power lights but still won't respond to the remote. What's going on?

OK so if the indoor unit clearly has power but ignores the remote, you're probably looking at dead batteries, a dirty IR receiver lens, or a failed remote. Start by cleaning that little sensor lens on the front bottom of the indoor unit with a dry cloth since dust and grime can block the signal more than you'd expect. If that doesn't do it, try the manual emergency button inside the front cover. If the unit responds to that but not the remote, just replace the remote. OEM replacement is $30-$50 online and takes two minutes to swap.

Related Daikin Minisplit Error Codes

Code: HUBDaikin Mini-Split Error Codes: Complete Guide Code: NOT-WORKINGDaikin Mini-Split Not Working Code: RESETHow to Reset a Daikin Mini-Split

Models Known to Experience WONT-TURN-ON Errors

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

FTXS09LVJU, FTXS12LVJU, FTXS15LVJU, FTXM15QVJU, FTXM18QVJU, FTXM24QVJU, CTXS09LVJU, FTXB12AXVJU

Written by

Raj Patel

HVAC & Water Systems Specialist · 15 years experience

Last verified for technical accuracy on March 15, 2026