Setup: Gree XK41 Wired Controller Owner Manual

Overview

The XK41 Wired Controller is a wall-mounted control interface for compatible GREE commercial air-conditioning indoor units. It provides direct control of power, operating mode, temperature, fan speed, timer functions, airflow swing, sleep operation, turbo operation, auxiliary electric heating, and indoor-unit blow-dry operation.

This controller is intended for installations where dependable wired communication is preferred over a handheld remote. Its LCD shows the current operating state, selected settings, timer values, special functions, and system error codes.

Specifications

• Model: XK41
• Part number: MC207059
• Controller type: Wired indoor-unit controller
• Communication connection: Four-core signal line connected to the indoor-unit PCB
• Maximum communication distance: 20 m; the standard distance is 8 m
• Temperature setting range: 16°C to 30°C in Cooling, Dry, Fan, and Heating modes
• Timer range: 0.5 to 24 hours
• Fan selections: Low, Middle, High, and Auto
• Operating modes: Auto, Cooling, Dry, Fan, and Heating
• Installation hardware: Wall socket box, controller soleplate, M4×25 screws, front panel, and ST2.9×6 screws

Detailed Description

The XK41 Wired Controller communicates with the indoor air-conditioning unit through a dedicated signal line. The front panel contains an LCD display and control buttons for routine operation and optional system functions.

Display indicators

• Swing: Indicates that the airflow swing function is selected.
• Sleep: Shows that Sleep 1 operation is active.
• Mode indicators: Identify Auto, Cooling, Dry, Fan, or Heating operation.
• Defrost: Indicates outdoor-unit defrost operation.
• Lock: Shows that button input has been disabled.
• Shield: Indicates that selected controls are disabled by a remote monitoring system.
• Turbo: Shows that rapid cooling or heating assistance is enabled.
• Memory: Indicates that the unit will restore its previous operating state after power is restored.
• Energy saving, air exchange, gate control, and quiet: These display symbols represent functions that are unavailable for this unit.
• Temperature: Displays the ambient or selected temperature value.
• E-heater: Indicates auxiliary electric heating.
• Blow: Shows that the indoor-unit drying cycle is enabled.
• Timer: Displays the programmed time value and the active timer direction.
• Operation status: The display blinks while the unit is on and no button is being pressed.

Button functions

• Enter/Cancel: Confirms or cancels a selected function.
• Up and Down: Adjust the temperature or timer value.
• Fan: Selects Low, Middle, High, or Auto fan speed.
• Mode: Selects Auto, Cooling, Dry, Fan, or Heating.
• Function: Moves through available functions such as Swing, Sleep, Turbo, E-heater, and Blow.
• Timer: Opens timer-on or timer-off programming.
• On/Off: Starts or stops the indoor unit.

Safety

• Use a unified power supply arrangement for the indoor units as required by the air-conditioning system installation.
• Do not install the controller in a wet location or where direct sunlight can reach it.
• Use shielded twisted-pair communication wiring when the installation is exposed to electromagnetic interference.
• Connect the communication line to the correct indoor-unit port. An incorrect connection can prevent communication.
• Keep the communication wiring at least 20 cm away from power cords and indoor-to-outdoor unit connection lines.
• Do not strike, throw, or repeatedly dismantle the controller.
• Operate the controller only with dry hands.
• Disconnect power before installing or removing the controller. Installation work must not be performed on an energized circuit.

Setup and Operation

Turning the unit on or off

Press On/Off once to start the indoor unit. Press it again to stop operation. The LCD indicates whether the unit is on or off.

Selecting an operating mode

With the unit on, press Mode repeatedly to move through Auto, Cooling, Dry, Fan, and Heating. Temperature adjustment is unavailable in Auto mode.

Adjusting temperature

Press Up or Down to change the selected temperature. Holding either button changes the setting by 1°C every 0.5 seconds. The adjustable range in Cooling, Dry, Fan, and Heating modes is 16°C to 30°C.

Adjusting fan speed

While the unit is on, press Fan to cycle through Low, Middle, High, and Auto fan speed.

Using the timer

When the unit is off, press Timer to program a timer-on operation. When the unit is on, press Timer to program a timer-off operation.

1. Press Timer until the desired timer direction appears and the timer value begins to blink.
2. Use Up or Down to select a time from 0.5 to 24 hours.
3. Press Timer again to confirm the setting.
4. To cancel a programmed timer, press Timer after the timer has been set. The timer value will disappear from the LCD.

Each button press changes the timer by 0.5 hour. Holding a button changes the value by 0.5 hour every 0.5 seconds.

Setting swing operation

1. Press Function while the unit is on until the Swing symbol blinks.
2. Press Enter/Cancel to enable swing operation.
3. To disable swing, select the blinking Swing function again and press Enter/Cancel.

After selecting a function, press Enter/Cancel to return to the normal display. The controller also exits the setting screen automatically after approximately five seconds.

Using Sleep operation

1. Press Function while the unit is on until the Sleep setting is displayed.
2. Press Enter/Cancel to enable Sleep 1.
3. Repeat the selection and press Enter/Cancel to disable it.

In Cooling or Dry mode, Sleep 1 raises the temperature by 1°C after the first hour and by another 1°C after the second hour. In Heating mode, it lowers the temperature by 1°C after each of the first two hours, then maintains the resulting setting.

Using Turbo operation

Turbo operation uses high fan speed to help the room approach the selected temperature more quickly. It can be selected in Cooling or Heating mode.

1. Press Function until the Turbo setting appears.
2. Press Enter/Cancel to activate Turbo.
3. Repeat the process and press Enter/Cancel to cancel it.

Using auxiliary electric heating

The E-heater function is available in Heating mode. It may activate automatically when Heating mode is selected through the wired controller or remote controller.

1. Press Function in Heating mode until the E-heater setting appears.
2. Press Enter/Cancel to switch the function on or off.

Using Blow operation

Blow operation helps dry residual moisture from the indoor-unit evaporator after cooling or dry operation, reducing conditions that can contribute to mildew.

1. Press Function in Cooling or Dry mode until the Blow setting appears.
2. Press Enter/Cancel to enable or disable the function.

When Blow is enabled and the unit is stopped with On/Off or the remote controller, the indoor fan continues at low speed for two minutes while the LCD shows the Blow indicator. Blow is unavailable in Fan and Heating modes.

Locking the buttons

With the unit on and operating normally, or with the unit off, press Up and Down together for five seconds. The Lock indicator appears and other button presses are ignored. Press both buttons together again for five seconds to unlock the controller.

Memory function

With the unit off, press Mode and Up together for five seconds to switch Memory on or off. When enabled, the controller can restore the previous On/Off state, mode, temperature, fan speed, and Lock setting after a power interruption. When Memory is disabled, the unit remains off after power is restored. Memory is disabled by default.

Changing the temperature unit

Turn the unit off, then press Mode and Down together for five seconds to switch the temperature display between Celsius and Fahrenheit.

Installation

Connecting the signal line

1. Switch off power to the indoor unit and verify that the circuit is not energized.
2. Open the indoor-unit electrical control box.
3. Route the controller signal line through the rubber ring.
4. Connect the signal line to the indoor-unit PCB four-pin socket.
5. Secure the cable with suitable ties so it cannot pull on the connector.

The communication distance between the indoor-unit main board and the XK41 Wired Controller can be up to 20 m. The standard communication distance is 8 m.

Mounting the controller

1. Turn off the power supplied to the wiring in the wall opening before beginning installation.
2. Pull the four-core twisted-pair line through the installation opening and route it through the rectangular opening in the controller soleplate.
3. Position the soleplate over the wall opening and fasten it with the M4×25 screws.
4. Insert the four-core line into the controller connection slot.
5. Join the front panel to the soleplate.
6. Secure the front panel to the soleplate with the ST2.9×6 screws.

Keep signal and communication wiring separate from power wiring and indoor-to-outdoor connection lines. Where electromagnetic interference is likely, use shielded twisted-pair communication cable.

Removing the controller

Disconnect power before dismantling. Remove the front-panel retaining screws, separate the front panel from the soleplate, disconnect the signal line, and then remove the soleplate fasteners. Avoid pulling on the cable or connector during removal.

Troubleshooting

If an error code appears, the controller displays it on the LCD. When several faults occur at once, the codes are shown in sequence. Turn off the unit and have the system checked by professionally skilled service personnel rather than repeatedly restarting it.

Error code guide

• F1, F2, b5, b7, P7, F3, F4, F5: Temperature-sensor open or short-circuit conditions.
• E6, E7, P6: Indoor or outdoor communication and drive-board communication faults.
• LP: Indoor and outdoor units are unmatched.
• dn: Communication wiring or expansion-valve fault.
• H3, E4, E5, E8, H5, H7, P5, P8, Ld, L9, Hc, F8, F9, FH, F6, LF: Compressor, inverter, phase, frequency, current, pressure, or operating-protection conditions.
• Fo: Pump-down operation.
• C5: Jumper fault.
• H1: Forced defrosting.
• PL, PH, U1, HE, PFC, LE: DC-bus, over-voltage, over-current, phase-current, power, or compressor protection conditions.
• PF, E9, P9, PE, Pd, U5, U3, U7, L3, H6, LA, U8: Water-level, contactor, temperature-drift, voltage, valve, outdoor-fan, motor, or zero-crossing protection conditions.
• En: High-pressure protection.
• E1: Low-pressure protection.
• E2: Anti-freezing protection.
• E3: Overload protection.
• E9: Indoor-unit full-water condition.
• EU: Drive-board temperature-sensor error.
• PP: Sensor connection fault.

Pros & Cons

• Pros: Provides direct wall-mounted control, five operating modes, four fan-speed selections, timer-on and timer-off programming, Memory recovery, button lockout, and several comfort functions.
• Pros: The LCD identifies operating settings and reports system error codes for easier service diagnosis.
• Pros: The controller supports communication runs up to 20 m when installed with suitable wiring.
• Cons: Several displayed functions, including air exchange, gate control, energy saving, and quiet operation, are unavailable for this unit.
• Cons: Installation requires correct four-core communication wiring and should be completed with power disconnected.
• Cons: Error-code recovery generally requires professionally skilled service rather than a user reset.