Universal Non-Inverter Air Conditioner PCB Control Kit – QD-U03C+
The Universal QD-U03C+ Air Conditioner PCB Control Kit is a replacement electronic control system designed for selected fixed-speed, non-inverter wall-mounted split air conditioners and heat-pump units.
The kit replaces an obsolete, unavailable or damaged original control board by providing a new main PCB, infrared remote control, display receiver, transformer, temperature sensors and compatible wiring accessories. It controls the compressor, indoor fan, outdoor fan, swing motor and heating or cooling functions where the appliance wiring and electrical components are compatible.
Product Features
- Control-system reference: QD-U03C+
- Part type: Universal air-conditioner PCB and remote-control kit
- Suitable for selected fixed-speed, non-inverter split air conditioners
- Suitable for selected cooling-only and heat-pump systems
- Five operating modes: Cool, Heat, Fan, Dry and Auto
- Three indoor-fan speeds: Low, Medium and High
- Automatic fan-speed control
- Adjustable temperature setting from approximately 16°C to 30°C
- Dual temperature-sensor system
- Automatic restart after a power interruption
- Timer on and timer off functions
- Sleep function
- Automatic defrost control in heating mode
- Independent outdoor-fan control
- Compressor restart-delay protection
- Cold-air prevention during heating startup
- Infrared remote control with separate display and receiver unit
- Swing-louvre motor control
Typical Kit Contents
- QD-U03C+ main control PCB
- Infrared remote control
- Display and infrared receiver unit
- Power transformer
- Room-temperature sensor
- Coil or evaporator temperature sensor
- Display and sensor wiring harnesses
- Selected connector terminals and insulating sleeves
Package contents may vary between suppliers. Confirm the components included from the product photographs and listing before ordering. Remote-control batteries are not included unless specifically stated.
Common Reasons for Installing This Kit
- Original air-conditioner PCB no longer available
- Original control board burnt or electrically damaged
- Air conditioner completely unresponsive
- Indoor fan not receiving the correct control output
- Compressor or outdoor fan not being switched correctly
- Original infrared receiver or remote-control system faulty
- Temperature-control functions operating incorrectly
- Conversion of a compatible fixed-speed air conditioner to a universal control system
Important Compatibility Note
This control kit is designed for selected fixed-speed, non-inverter air conditioners. It is not suitable for inverter air conditioners, inverter compressors or systems that require proprietary communication between the indoor and outdoor control boards.
It may also be unsuitable for appliances using DC variable-speed indoor fan motors, electronically controlled expansion valves, multi-zone communication systems or specialised factory control features.
Universal does not mean plug-and-play. The original wiring will normally require identification, alteration and connection to the correctly labelled outputs on the replacement PCB.
Important Diagnostic Note
A non-operational air conditioner does not automatically have a faulty PCB. Test the power supply, fuse, transformer, fan motor, compressor, capacitors, contactors, sensors, wiring and outdoor-unit components before replacing the control system.
A shorted motor, valve coil, contactor or damaged wiring can immediately damage the replacement PCB. Test all connected loads before energising the new board.
Installation Requirements
Before installation, identify and record every original connection, including live, neutral, compressor, indoor-fan speeds, outdoor fan, four-way reversing valve, swing motor and temperature sensors.
Confirm that the output ratings and switching method of the QD-U03C+ are suitable for the connected components. External contactors may be required where a load exceeds the PCB relay rating.
The display receiver should be positioned where it is visible and can receive the remote-control signal without direct exposure to strong light. Install both temperature sensors in suitable positions and keep the PCB protected from moisture and condensation.
The control system incorporates an approximately three-minute compressor restart delay. This is normal and helps protect the compressor against rapid restarting.
Installation must be carried out by a suitably qualified air-conditioning or refrigeration technician. Disconnect the appliance from the electrical supply before installation or testing.
Universal Non-Inverter Air Conditioner PCB Kit
R460,00
Universal Non-Inverter Air Conditioner PCB Control Kit – QD-U03C+
The Universal QD-U03C+ Air Conditioner PCB Control Kit is a replacement electronic control system designed for selected fixed-speed, non-inverter wall-mounted split air conditioners and heat-pump units.
The kit replaces an obsolete, unavailable or damaged original control board by providing a new main PCB, infrared remote control, display receiver, transformer, temperature sensors and compatible wiring accessories. It controls the compressor, indoor fan, outdoor fan, swing motor and heating or cooling functions where the appliance wiring and electrical components are compatible.
Product Features
- Control-system reference: QD-U03C+
- Part type: Universal air-conditioner PCB and remote-control kit
- Suitable for selected fixed-speed, non-inverter split air conditioners
- Suitable for selected cooling-only and heat-pump systems
- Five operating modes: Cool, Heat, Fan, Dry and Auto
- Three indoor-fan speeds: Low, Medium and High
- Automatic fan-speed control
- Adjustable temperature setting from approximately 16°C to 30°C
- Dual temperature-sensor system
- Automatic restart after a power interruption
- Timer on and timer off functions
- Sleep function
- Automatic defrost control in heating mode
- Independent outdoor-fan control
- Compressor restart-delay protection
- Cold-air prevention during heating startup
- Infrared remote control with separate display and receiver unit
- Swing-louvre motor control
Typical Kit Contents
- QD-U03C+ main control PCB
- Infrared remote control
- Display and infrared receiver unit
- Power transformer
- Room-temperature sensor
- Coil or evaporator temperature sensor
- Display and sensor wiring harnesses
- Selected connector terminals and insulating sleeves
Package contents may vary between suppliers. Confirm the components included from the product photographs and listing before ordering. Remote-control batteries are not included unless specifically stated.
Common Reasons for Installing This Kit
- Original air-conditioner PCB no longer available
- Original control board burnt or electrically damaged
- Air conditioner completely unresponsive
- Indoor fan not receiving the correct control output
- Compressor or outdoor fan not being switched correctly
- Original infrared receiver or remote-control system faulty
- Temperature-control functions operating incorrectly
- Conversion of a compatible fixed-speed air conditioner to a universal control system
Important Compatibility Note
This control kit is designed for selected fixed-speed, non-inverter air conditioners. It is not suitable for inverter air conditioners, inverter compressors or systems that require proprietary communication between the indoor and outdoor control boards.
It may also be unsuitable for appliances using DC variable-speed indoor fan motors, electronically controlled expansion valves, multi-zone communication systems or specialised factory control features.
Universal does not mean plug-and-play. The original wiring will normally require identification, alteration and connection to the correctly labelled outputs on the replacement PCB.
Important Diagnostic Note
A non-operational air conditioner does not automatically have a faulty PCB. Test the power supply, fuse, transformer, fan motor, compressor, capacitors, contactors, sensors, wiring and outdoor-unit components before replacing the control system.
A shorted motor, valve coil, contactor or damaged wiring can immediately damage the replacement PCB. Test all connected loads before energising the new board.
Installation Requirements
Before installation, identify and record every original connection, including live, neutral, compressor, indoor-fan speeds, outdoor fan, four-way reversing valve, swing motor and temperature sensors.
Confirm that the output ratings and switching method of the QD-U03C+ are suitable for the connected components. External contactors may be required where a load exceeds the PCB relay rating.
The display receiver should be positioned where it is visible and can receive the remote-control signal without direct exposure to strong light. Install both temperature sensors in suitable positions and keep the PCB protected from moisture and condensation.
The control system incorporates an approximately three-minute compressor restart delay. This is normal and helps protect the compressor against rapid restarting.
Installation must be carried out by a suitably qualified air-conditioning or refrigeration technician. Disconnect the appliance from the electrical supply before installation or testing.
Unsure about compatibility with your machine? Please confirm compatibility before ordering. Send us your model number and we’ll confirm it for you.