KeepRite Error Code Brown-out defeat toggle: Turn 230 V brown-out protection off or on (AC)

Updated October 16, 2026 · by Aurora Star Tech Inc.

KeepRite error code Brown-out defeat toggle on a air conditioner means: Turn 230 V brown-out protection off or on. It is also called KeepRite diagnostic code Brown-out defeat toggle.

Low severityAir ConditionerAlso Heat PumpKeepRite *CA/*CH Two-Stage Communicating

Homeowner? What KeepRite code Brown-out defeat toggle means for you

Usually minor Your air conditioner is reporting: Turn 230 V brown-out protection off or on. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.

Safe things you can check yourself

Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
Check both breakers and the outdoor disconnect box beside the outdoor unit; all should be ON.
Look at the air filter. If it is grey and clogged, replace it; a blocked filter causes many shutdowns.
Keep about 2 feet around the outdoor unit clear of leaves, grass and debris.
If you see ice on the pipes or the indoor coil, turn the system off and run only the fan for a few hours, then call a technician.
Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.

Call (647) 657-2977 Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does KeepRite error code Brown-out defeat toggle mean?

Service step on the two-stage communicating outdoor board: shorting the forced-defrost pins at power-up, with the outdoor air and coil sensors unplugged, flips the brown-out protection setting. The new setting is remembered through power cycles.

Applies to: *CA/*CH two-stage communicating outdoor boards

Safety: Gas, electrical and refrigerant work must be done by a licensed technician. Turn off power and gas before servicing, never bypass a safety control, and always follow the manufacturer's manual for your exact model.

KeepRite models that use code Brown-out defeat toggle

*CA624 *CA636 *CA648 *CA660 *CA924 *CA936 *CA948 *CA960

Other KeepRite AC codes

Code	Meaning
Amber 1 flash	Running - cooling / low stage (normal)
Amber 2 flashes	High stage running (normal)
Amber 5 flashes	Brown-out protection turned off (user setting)
Amber 6 flashes	Brown-out protection active (user setting)
Amber LED off	Standby - no call (2-wire hookup or indoor unit unpowered)
Amber LED on solid	Standby - no call (communicating)
Green COMM LED off	No communication yet
Green COMM LED on	Communication with the system established
Green POWER LED	Comfort Alert module has power
Red TRIP LED	Comfort Alert TRIP - Y call but compressor not running
TRIP + ALERT flashing together	Comfort Alert - control voltage too low to operate

All KeepRite Air Conditioner error codes →

KeepRite code Brown-out defeat toggle: homeowner questions

What does KeepRite code Brown-out defeat toggle mean?

Turn 230 V brown-out protection off or on. Service step on the two-stage communicating outdoor board: shorting the forced-defrost pins at power-up, with the outdoor air and coil sensors unplugged, flips the brown-out protection setting. The new setting is remembered through power…

Is it safe to keep using my air conditioner with code Brown-out defeat toggle?

Usually yes. Code Brown-out defeat toggle is normally minor, but if it keeps coming back have it checked.

Can I reset KeepRite code Brown-out defeat toggle myself?

You can try one reset (power off for 30 seconds, then on). If KeepRite code Brown-out defeat toggle comes back, the cause is still there and a licensed technician should check it.

Who can fix KeepRite code Brown-out defeat toggle near me?

Aurora Star Tech Inc. repairs KeepRite air conditioners in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.

Homeowner help: AC Running But Not Cooling: What to Check

Troubleshooting guides

Bubbles in sight glass / temperature drop across liquid line drier All brands · Air Conditioner
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Evaporator freezing All brands · Air Conditioner
Freezing in cold weather All brands · Air Conditioner
General service-call symptom list All brands · Air Conditioner
Hard starting / stalls on restart All brands · Air Conditioner
Humid indoor air All brands · Air Conditioner
Insufficient cooling, frost at outlet of liquid-line filter-drier, both pressures and amps dropping All brands · Air Conditioner
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Undercharged system: compressor runs continuously, poor cooling, high power use, warm liquid line and drier All brands · Air Conditioner
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Won't engage All brands · Air Conditioner
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Checking OAT and OCT thermistors - KeepRite C4A3/CXA6 KeepRite · Air Conditioner
Turn 230 V brown-out protection off or on KeepRite · Air Conditioner

Source: KeepRite ICP split A-C + HP (R-410A & R-22) Application Guideline and Service Manual 421 08 5400 04, Brown-Out Protection Defeated, p.57. Written in our own words as a summary; always check the original manual.

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.