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How to Reset a Mini-Split: Step-by-Step for Every Brand (2026)

by Dua Jones April 14, 2026

Resetting a mini-split clears error codes, restores default settings, and often resolves temporary glitches without a service call. The process varies slightly by brand, but most mini-splits can be reset using one of three methods: the remote control, the indoor unit's reset button, or the circuit breaker. This guide covers all three methods with brand-specific instructions.

Method 1: Circuit Breaker Reset (Works for All Brands)

This is the universal reset method that works on every mini-split regardless of brand.

Step 1: Turn off the mini-split using the remote control or wall switch.
Step 2: Go to your electrical panel and switch off the dedicated breaker for the mini-split.
Step 3: Wait 30 seconds. Some technicians recommend 60 seconds for a more complete reset.
Step 4: Switch the breaker back on.
Step 5: Wait 2–3 minutes for the unit to initialize, then turn it on with the remote.

If the error code or issue reappears after a breaker reset, the underlying problem needs diagnosis rather than a reset.

Method 2: Reset Button on the Indoor Unit

Many mini-split indoor units have a small recessed reset button — usually behind the front cover on the right side near the indicator lights. Press and hold for 3–5 seconds using a paperclip or pen tip. Close the panel and wait for the unit to restart.

Method 3: Remote Control Reset

Some brands allow a settings reset via the remote control. This resets the timer, mode, and temperature to factory defaults without clearing error codes. Useful when the remote and unit seem out of sync.

Brand-Specific Reset Instructions

Brand	Reset Method	Special Notes
Mitsubishi	Breaker or reset button behind panel	Wait 3 full minutes after breaker reset before operating
Fujitsu	Reset button (right side, behind panel)	LED blink patterns clear after successful reset
Daikin	Breaker reset; wired controllers have menu reset	Remove remote batteries for 30 sec to reset remote
LG	Breaker or reset button behind panel	WiFi module: hold WiFi button 5 sec to re-pair
MrCool	Breaker or reset button behind panel	App may need re-pairing after reset
Gree / Pioneer / Midea / Senville	Breaker or reset button behind panel	Wait 3 min for compressor protection timer

What a Reset Does (and Does Not Do)

A reset clears: error codes stored in memory, timer and scheduling settings, temporary sensor glitches, and communication errors between indoor and outdoor units.

A reset does not fix: low refrigerant, clogged drain lines, failed fan motors, bad capacitors, or damaged compressors. If the same error code returns after resetting, the system is detecting a real issue that needs professional diagnosis.

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When to Reset vs. When to Call a Technician

Situation	Try a Reset?	Call a Technician?
Error code appeared once, unit stopped	Yes — reset first	Only if code returns
Unit not responding to remote	Yes — try breaker reset	If still unresponsive after reset
Same error code keeps returning	No — already tried	Yes — underlying issue exists
Unit makes unusual noises	Try once	Yes — mechanical issue likely
Unit leaking water	No — not a reset issue	Diagnose drain system
Unit runs but does not cool or heat	Try once	Yes — likely refrigerant or compressor

Frequently Asked Questions

How long should I leave the breaker off when resetting?

30 seconds is sufficient for most situations. For persistent error codes, some technicians recommend leaving the breaker off for 5 minutes to fully discharge the control board capacitors.

Will resetting my mini-split erase my settings?

A breaker reset typically clears timer and scheduling settings but retains the basic operating mode and temperature setpoint. WiFi connections may need to be re-established after a reset on some models.