IQ Air Conditioners | Q Smart R32 Inverter
Call Us Now
+27 10 493 8746 Get A Quote

Q Smart R32 Inverter

  • Home
  • Q Smart R32 Inverter

Q Smart R32 Inverter  

IQ® Q-SMART PLUS Inverter R32 is built to thrive where others fail. Designed for mission-critical applications and the harshest climates, it delivers non-stop performance through a blend of rugged durability, intelligent efficiency, and smart control.

MODEL: 
32K Btu only

GET A QOUTE DOWNLOAD
  • Description
  • Error Codes

Q - SMART R32 Inverter

Smart Energy Savings: Drops standby power consumption from 4-5W down to just 1W, and features an automated ECO Mode to optimize compressor speed and energy use.

5th-Gen Automatic Washing: A comprehensive 6-step professional cleaning cycle that utilizes 57°C high-temperature sterilization to eliminate 99.9% of bacteria.

Seamless Wi-Fi 2.0 Control: Features a built-in Wi-Fi module and a mobile app for convenient remote starts, scheduling, and instant monitoring from anywhere.

Wide Voltage Protection: A wide voltage input range (125V–265V) shields the internal PCB from sudden power surges and unstable grid environments.

Extreme Temperature Resilience: Features an industry-leading operating range from a frigid -25°C to a scorching 60°C. Whether in a deep freeze or blistering heat, it ensures instant startup and unwavering stability.

Anti-Corrosion Sheet Metal: The outdoor unit is constructed from hot-dip galvanized steel and finished with a high-temperature, pure polyester powder coating applied via advanced Wagner spray equipment for superior weather protection.

Golden Fin Technology: Outperforms standard blue fins by offering superior oxidation and corrosion resistance, inhibiting bacterial growth, and enhancing heat exchange efficiency.

Troubleshooting & Diagnostic Codes

Refer to the comprehensive technical guide below to diagnose alerts reported by the internal system or the external panel LED indicators:

Code Error Explanation & Causes Inspection Procedure & Key Points LED Signal (1 / 2 / 3)
P1 Water full alarm: Tank full, float switch abnormally disconnected, or main control board failure. 1. Open the water tank plug behind the unit to release water completely. Power cycle the unit.
2. Check if the float switch is stuck or if it registers continuity under normal conditions. Replace if disconnected.
3. If the switch is normal, replace the main control board.		 Light / Light / Off
P2 / PE High voltage switch protection: High-voltage switch opens 3 times within 20 minutes during standby or running. Frequently caused by low voltage switch cable, switch error, or fluoride leaks. 1. Verify terminal connection firmness on the main board.
2. Check cable continuity and low-voltage switch state (normally closed, abnormally open).
3. Inspect system pressure. If disconnected due to a system leak, fix and re-verify. Replace board if lines/switches are fine.		 Off / Light / Light
P3 / 26 Fluoride deficiency protection: Lack of fluoride, closed stop valve, capillary blockage, coil sensor drift, or compressor failure. 1. Check refrigeration; if cooling performs normally, inspect if the internal coil sensor fell off or drifted.
2. Confirm stop valve is fully open.
3. Check compressor startup, capacitor values, and winding resistances.
4. Test system pressures (low suggests fluorine lack/blockage; high suggests 4-way valve gas bypass).		 Off / Flash / Off
P4 Condenser overload protection: Outdoor coil sensor registers a high temp, restricting compressor frequency. Caused by system blockages, dirty condensers, fan errors, or bad resistors. 1. Measure outdoor disk sensor resistance (Standard: 20KΩ at 25°C).
2. Verify system pressure; high levels indicate poor heat transfer or pipe blocks.
3. Confirm whether the fan speed is running too low.
4. Test controller sensor partial voltage loop or replace the external controller.		 / / /
P5 / F2 Compressor discharge temp protection: Exhaust pipe registers protection states 3 times within 20 minutes. Caused by sensor drift, lack of fluoride, or system line blockages. 1. Measure exhaust temperature sensor resistance (Baseline: 50KΩ at 25°C). *Note: actual resistance varies based on active temps.
2. Check system pressures for abnormalities.
3. Replace the main control board if sensors and pressures check out.		 / / /
P6 Heating room high temperature protection: Triggered by internal coil sensor drift or airflow restrictions. 1. Check and remove any structural blocks around the indoor air inlets.
2. Inspect and thoroughly wash dirty filters.
3. Verify air output volume; check for an ash-fouled internal blower fan and clean it.
4. Measure internal coil sensor resistance drift at room temperature.		 / / /
P7 Indoor anti-freeze protection: Evaporation temperature drops below 0°C during cooling due to low ambient temps, dirty coils, or low refrigerant. 1. Feel the connecting pipe or evaporator; if not hot (<60°C), replace the 20KΩ coil sensor.
2. Clean the indoor filter.
3. Check for low fan speed; swap motor or internal board if speed is faulty.
4. Feel evaporator paths to see if one flow line is restricted or incorrectly welded.
5. Recover and weigh in exact factory refrigerant charge.		 / / /
P8 Outdoor unit overcurrent protection: Operating current values exceed set protection limits. Caused by transformer errors, control board defects, or lack of fluoride. 1. Check the current transformer loop to ensure the wire passes through the transformer with the correct number of turns (usually straight through).
2. Use a clamp meter to measure active unit current draw.
3. Ensure absolute line order mapping matches if replacing control boards.		 / / /
LO DC overvoltage error: Power voltage supply is running too low, too high, or experiencing volatile spikes. Affects ODU PCB board. 1. Test line voltage stability for dramatic dips or high voltage fluxes.
2. Visually inspect the outdoor board for physical fractures or blown components.
3. If the error remains, proceed to the "F1" guidance routine.		 Flash / Flash / Light
L1 / L2 Compressor protections: L1 means phase overcurrent; L2 means lost step protection. Rooted in broken ODU PCB, line issues, bad supply lines, or compressor failure. 1. Check the ODU board for trace breaks or component damage.
2. Inspect communication/interconnect wires.
3. Verify compressor terminal lines are mapped correctly, and ensure the compressor is not locked up or running extreme pressures. Otherwise, refer to "F1".		 Flash / Flash / Light
L3 Compressor phase error: Caused by incorrectly structured or connected compressor leads. 1. Double-check compressor wire orientations.
2. For Inverters: Check compressor wiring paths, the outdoor PCB, and pressure switches for structural breaks.
3. For Cooling Only units: Inspect compressor wires, indoor PCB traces, and pressure switches. If unresolved, refer to "F1".		 Flash / Flash / Light
L4 Compressor drive module IPM fault: Generally driven by loose or wrong compressor wire installations. Related to voltage supply, pressure, board, or compressor failure. 1. Examine the outdoor board structure for circuit breaks.
2. Inspect compressor terminal leads to ensure they are fastened securely and undamaged.
3. Check internal compressor windings for terminal shorts. If unresolved, reference code path "F1".		 Flash / Flash / Light
L5 / L6
L7 / LC
Ld		 PFC & Motor AD Abnormalities: PFC hardware/software overcurrent (L5/L6), Current detection AD error (L7), PFC current AD fault (LC), or DC fan motor detection AD abnormality (Ld). Driven by board failure or heavy incoming line spikes. 1. Inspect the outdoor main board carefully for trace burns or component fatigue.
2. Test whether input voltage drops too low or climbs too high, and verify overall line stability. If errors persist after these steps, use manual guide "F1".		 Flash / Flash / Light
L8 Shunt resistance imbalance fault: Broken ODU PCB, detached or loosely fitted internal terminal connectors, or internal compressor damage. 1. Check the physical condition of the outdoor board.
2. Trace intermediate wires to confirm lines are not cut and connect tightly.
3. Run electrical diagnostics on the compressor motor. If code continues to flag, transition to guide "F1".		 Flash / Flash / Light
L9 IPM temperature sensor error: Faulty outdoor board, abnormal condenser fan speeds, or high pressure thresholds inside the refrigerant lines. 1. Inspect the outdoor board layout for issues.
2. Monitor the outdoor condenser fan to verify its operating wind speeds are normal.
3. Attach system gauges to verify if pressure is running too high. If tests pass, execute "F1" actions.		 Flash / Flash / Light
LA Compressor startup failure: Damaged outdoor board, broken/loose intermediate power wires, or internal compressor mechanics locked. 1. Check the outdoor board for burns or breaks.
2. Ensure terminal plugs on the compressor and module panel are connected firmly.
3. Verify compressor windings. If the code recurs, use troubleshooting routine "F1".		 Flash / Flash / Light
LE / LF DC fan motor faults: LE means motor phase error; LF indicates motor lost step protection. Caused by bad boards, loose plugs, or bad DC motors. 1. Check the main control panel and modules for physical damage.
2. Verify if outdoor fan speeds drop out of threshold during use.
3. Check system pressure. If steps are completed and error remains, refer to guide "F1".		 Flash / Flash / Light
LH DC fan motor IPM protection: Broken board, volatile or out-of-spec voltage parameters, torn wiring, module fault, or a blocked condenser. 1. Check the outdoor board configuration for broken paths.
2. Inspect wires to ensure everything connects tightly and isn't broken.
3. Verify if the DC fan motor is physically damaged.
4. Clear any debris blocking the condenser coil face. (If unresolved, follow "F1").		 Flash / Flash / Light

Related Products

Black Mirror R32 Inverter

ZA - Series R32 Inverter

Q Mander Inveter

Q Smart R32 Inveter