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Kinghome Error Code Lock icon: Remote keypad locked (Heat Pump)

Updated · by Aurora Star Tech Inc.

Kinghome error code Lock icon on a heat pump means: Remote keypad locked. It is also called Kinghome diagnostic code Lock icon.

Low severityHeat PumpKinghome KM HEDI · Kinghome KM HT1DI

Homeowner? What Kinghome code Lock icon means for you

Usually minor Your heat pump is reporting: Remote keypad locked. 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.
  • In winter, keep snow and ice off and away from the outdoor unit. A short defrost cycle with steam is normal.
  • 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) 657-2977Book a service call

Licensed technicians serving Vaughan, Toronto and the GTA.

What does Kinghome error code Lock icon mean?

A lock icon on the remote controller display means the keypad is locked. While locked, pressing any key only makes the icon blink three times and nothing is sent to the unit. Not a fault.

Applies to: Kinghome KM09HEDI, KM12HEDI, KM18HEDI wall mini-splits; Kinghome KM09HT1DI, KM12HT1DI, KM18HT1DI, KM24HT1DI wall mini-splits

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.

Kinghome models that use code Lock icon

KM09HEDIKM09HT1DIKM12HEDIKM12HT1DIKM18HEDIKM18HT1DIKM24HT1DI

Other Kinghome Heat Pump codes

CodeMeaning
HCPFC protection
Heat lampHeat lamp lit (heating mode)
Heat lamp 10 s on / 0.5 s offDefrosting in heating mode
L3Outdoor DC fan motor fault
L9Power limit protection
LCCompressor start failure
LPIndoor and outdoor unit mismatch
OFDebug menu option OFF
ONDebug menu option ON
Operation lampOperation lamp lit (power connected)
P0Compressor minimum-frequency test / driver reset
P1Compressor rated-frequency test display

All Kinghome Heat Pump error codes →

Kinghome code Lock icon: homeowner questions

What does Kinghome code Lock icon mean?

Remote keypad locked. A lock icon on the remote controller display means the keypad is locked. While locked, pressing any key only makes the icon blink three times and nothing is sent to the unit. Not a fault.

Is it safe to keep using my heat pump with code Lock icon?

Usually yes. Code Lock icon is normally minor, but if it keeps coming back have it checked.

Can I reset Kinghome code Lock icon myself?

You can try one reset (power off for 30 seconds, then on). If Kinghome code Lock icon comes back, the cause is still there and a licensed technician should check it.

Who can fix Kinghome code Lock icon near me?

Aurora Star Tech Inc. repairs Kinghome heat pumps 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 · Heat Pump Not Heating or Blowing Cold Air

Troubleshooting guides

Source: Kinghome KM09-12-18HEDI service manual, sec. 6.1 item 17; Kinghome KM09-12-18-24HT1DI service manual, sec. 6.1 child lock function. 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.

Emergency HVAC Service

647-657-2977