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Kinghome · technician tips

Kinghome service menus, test modes and resets

7 tips for heat pump: access codes, button combinations, test modes and the resets you need at the appliance.

Jump to: Access & passwords (1) · Service & test modes (5) · Settings shortcuts (1)

Access & passwords

Installer and service menu codes, and how to get into them.

Open the outdoor board debug menu (SW1 held 5 s)

Heat pump · Kinghome Ultranixx

Holding SW1 for about 5 seconds opens the first-level debug menu on the KU outdoor board; items include 06 forced defrost, 08 refrigerant recovery and 09 forced operation.

  1. Hold SW1 about 5 seconds until the board display flashes.
  2. Short-press SW1 to move to the item you need (06, 08 or 09).
  3. Use SW2 or SW3 to change the value, then short-press SW1 to save.
  4. Leave it alone for 10 seconds to exit.

Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers

Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.5 to 2.3.7. Written in our own words; check the manual for your exact model.

Service & test modes

Forced fan, low and high fire, test and diagnostic modes, error history and live data.

Force a defrost cycle from the remote

Heat pump · Kinghome KM HEDI, Kinghome KM HT1DI

A key sequence on the remote forces the unit into defrost; the unit leaves it by itself when the outdoor unit finishes.

  1. Turn the unit on in heating mode and set 16°C.
  2. Within 5 seconds press + - + - + - on the remote.
  3. The unit exits the forced defrost by itself when the outdoor unit finishes.

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

Source: Kinghome KM09-12-18HEDI service manual, sec. 7.8 compulsory defrosting function; Kinghome KM09-12-18-24HT1DI service manual, sec. 6.2 (8) compulsory defrosting function. Written in our own words; check the manual for your exact model.

Force a defrost from the outdoor board (debug item 06)

Heat pump · Kinghome Ultranixx

Item 06 turns forced defrost on (ON) or off (OF).

  1. Hold SW1 about 5 s, short-press SW1 until 06 shows.
  2. SW2 or SW3 chooses ON or OF.
  3. Short-press SW1 to save.

Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers

Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.5 forced defrost control. Written in our own words; check the manual for your exact model.

Force cooling or heating from the outdoor board (debug item 09)

Heat pump · Kinghome Ultranixx

Item 09 forces the system to run regardless of the thermostat: 01 forced cooling, 02 forced heating, OF stops it.

  1. Hold SW1 about 5 s, short-press SW1 until 09 shows.
  2. SW2 or SW3 chooses 01 (cool), 02 (heat) or OF (off).
  3. Short-press SW1 to save.

Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers

Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.7 forced operation control. Written in our own words; check the manual for your exact model.

Start refrigerant recovery from the outdoor board (debug item 08)

Heat pump · Kinghome Ultranixx

Item 08 switches refrigerant recovery (pump-down) on (ON) or off (OF).

  1. Hold SW1 about 5 s, short-press SW1 until 08 shows.
  2. SW2 or SW3 chooses ON or OF.
  3. Short-press SW1 to save.

Applies to: Kinghome Ultranixx cold-climate KU36UHO and KU60UHO outdoor units with KU..UH2I and KD..UHI air handlers

Source: Kinghome Ultranixx cold-climate KU36/60UHO service manual GC202306, sec. 2.3.6 refrigerant recovery control. Written in our own words; check the manual for your exact model.

Start the pilot (test) run from the remote

Heat pump · Kinghome KM HEDI

Runs the unit in cooling and shows dd on the indoor display while the pilot run is active.

  1. Cooling mode, set temperature 30°C.
  2. Within 3 seconds press + - + - + - on the remote.
  3. End the pilot run to clear dd.

Applies to: Kinghome KM09HEDI, KM12HEDI, KM18HEDI wall mini-splits

Source: Kinghome KM09-12-18HEDI service manual, sec. 7.10 pilot run function. Written in our own words; check the manual for your exact model.

Settings shortcuts

Where the useful parameters live and what they are set to from the factory.

Switch between defrosting mode 1 and 2

Heat pump · Kinghome KM HEDI

With the unit off, MODE and AUXILIARY together on the remote toggle the defrosting mode; H1 or H2 shows the mode the unit will use after it is switched on.

  1. With the unit off, press MODE and AUXILIARY together on the remote to switch between defrosting mode 1 and 2.
  2. H1 or H2 on the remote shows the mode selected.

Applies to: Kinghome KM09HEDI, KM12HEDI, KM18HEDI wall mini-splits

Source: Kinghome KM09-12-18HEDI service manual, sec. 7.7 switchover function for defrosting mode. Written in our own words; check the manual for your exact model.

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Kinghome error codes

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For licensed technicians. Installer menus, test modes and access codes change settings that affect safety; only use them if you are trained on the appliance and understand the result. Gas, electrical and refrigerant work must be done by a qualified, licensed person, and the manufacturer’s manual for the exact model and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.