Products of the French company Airwell is known for decades. The company Airwell was founded in the 1947 and today it is one of the largest producer of HVAC equipment in the world. Airwell produces all types of home, semi-industrial and industrial air conditioning systems and markets more than 250 models. Find below the Airwell air conditioner troubleshooting table, which will help in case of Airwell equipment failure.
| No | SYMPTOM | PROBABLE CAUSE | CORRECTIVE ACTION |
|---|---|---|---|
| 1 | Power supply indicator (Red LED) does not light up. | No power supply | Check power supply. If power supply is OK, check display and display wiring, if OK, replace controller. |
| 2 | Unit does not respond to remote control message | Remote control message not reached the indoor unit | Check remote control batteries, if batteries are OK, check display and display wiring, if OK, replace display PCB. If still not OK replace controller. |
| 3 | Unit responds to remote control message but Operate indicator (Green LED) does not light up | Problem with display PCB | Replace display PCB. If still not OK replace controller. |
| Unit in heat mode and coil is still not warm. | Change to cool mode and check. | ||
| 4 | Indoor fan does not start (louvers are opened and Green LED does light up) | Problem with PCB or capacitor | Change to high speed and Check power supply to motor is higher than 130VAC (for triack controlled motor) or higher than 220VAC for fixed speed motors, if OK replace capacitor, if not OK replace controller |
| 5 | Indoor fan works when unit is OFF, and indoor fan speed is not changed by remote control command. | PCB problem | Replace controller |
| 6 | Compressor does not start | Electronics control problem or protection | Perform diagnostics (See 14.3), and follow the actions described. |
| 7 | Compressor stops during operation and Green LED remains on | Electronic control or power supply problem | Perform diagnostics (See 14.3), and follow the actions described. |
| 8 | Compressor is on but outdoor fan does not work | Problem with outdoor electronics or outdoor fan | Check outdoor fan motor according to the procedure in section 14.5.3 , if not OK replace controller |
| 9 | Unit works in wrong mode (cool instead of heat or heat instead of cool) | Electronics or power connection to RV | Check RV power connections, if OK, Check RV operation with direct 230VAC power supply, if OK, Replace outdoor controller. |
| 10 | All components are operating properly but no cooling or no heating | Refrigerant leak | Check refrigeration system. |
| 11 | Compressor is over heated and unit does not generate capacity | EEV problem | Check EEV |
| 12 | Units goes into protections and compressor is stopped with no clear reason | Control problem or refrigeration system problem | Perform diagnostics (See 14.3), and follow the actions described. |
| 13 | Compressor motor is generating noise and no suction occurs | Phase order to compressor is wrong | Check compressor phase order. |
| 14 | Water leakage from indoor unit | Indoor unit drainage tube is blocked | Check and open drainage tube. |
| 15 | Freezing of outdoor unit in heat mode and outdoor unit base is blocked with ice | Connect base heater. | |
| 16 | Unit operates with wrong fan speeds or wrong frequency | Wrong jumper settings | Perform diagnostics (See 14.3), and check if units is operating by EEPROM parameters. |
| SYMPTOM / PROBLEM | PROBABLE CAUSE | CORRECTIVE ACTION | |
|---|---|---|---|
| 1 | Indoor unit power supply indicator (Red LED) does not light up. | No Power supply | Check supply voltage to main terminals L and N with volt meter. |
| Miss-wiring | Check all supply wiring to controller and terminals according to wiring diagram | ||
| Loose connection | Check all power wiring connections | ||
| Display and display cable | Check continuity of each wire of the display wires/pins with Ohm meter | ||
| If still not OK | Check if fuse burnt | ||
| 2 | Fuse burned in indoor unit controller | Short Circuit between wires | Check for any cuts or exposed supply wires or misswiring |
| Failure of Indoor Unit Fan Motor | Check the motor and capacitor (13.5.19) Check for any cuts or exposed wires | ||
| If still not OK | Replace fuse | ||
| 3 | Indoor unit does not respond to remote control message | Remote control message not reached the indoor unit | Check remote control batteries |
| Check continuity of each wire of the display wires/pins with Ohm meter | |||
| If still not OK | Replace display box or indoor Electronic Assembly | ||
| 4 | Indoor unit responds to remote control message but Operate indicator (Green LED) does not light up | Problem with display PCB | Replace display PCB. |
| If still not OK | Replace indoor Electronic Assembly | ||
| 5 | Indoor fan does not start (louvers are opened and Green LED is ON) | Unit in heat mode and coil is still not warm | Change to Cool or Fan mode |
| Failure of Indoor Unit Fan Motor | Check the motor and capacitor (13.5.19) Check for any cuts or exposed wires | ||
| Problem with controller or motor capacitor | Change to high speed and Check power supply to motor is higher than 220VAC | ||
| If still not OK | Replace indoor Electronic Assembly | ||
| 6 | Indoor fan works when unit is OFF. and indoor fan speed is not changed by remote control command. | Controller problem | Replace indoor Electronic Assembly |
| 7 | Water leakage from indoor unit | Indoor unit drainage tube is blocked | Check and open drainage tube |
| 8 | One indoor unit or more are operating in cool mode with no capacity, and the other units have water leaks/ freezing problems | The communication wires of the indoor units are switched | Check and correct the communication wires connection |
| 9 | One indoor or more are operating in heat mode with a limited capacity, and the coil on the other units are very hot. | ||
| 10 | Outdoor unit display board and LEDs are off | No power supply | Check supply voltage to main terminals L and N with volt meter. |
| Miss-wiring | Check all supply wiring to controller and terminals according to wiring diagram | ||
| Loose connection | Check all power wiring connections | ||
| Burnt fuse | Check fuse on the main board (13.5.5) | ||
| If still not OK | Replace main board (14.1.13) | ||
| 11 | Compressor does not start operation | One or some components are not operating well Electronics control problem or protection | Check for any fault code shown on display board and act accordingly (13.4) |
| PFC Chock coil | Check the PFC Chock coil (13.5.6) | ||
| Driver failure | Check if fault code #11. 18. 19 or 26 is shown on display board. If so. fix the problem according to 13.5.5 or replace driver (14.1.15.). | ||
| If still not OK | Replace compressor (14.1.11.) | ||
| 12 | Cooling capacity is not sufficient | Unit size not match the load | Check if the size chosen for the complete room(s) load is enough or need bigger units |
| Piping size not matching system | Check if piping is installed correctly and proper diameter size and total length is according to unit specifications | ||
| Refrigerant leakage Refrigerant overcharge | Check refrigeration system (13.3) | ||
| Refrigerant clog | Check and repair clogging specially near the EEV | ||
| Electronics control problem or protection | Check for any fault code shown on display board and act accordingly (13.4) | ||
| Compressor failure | Check if fault code #11 or 26 is shown on display board. If so. fix the problem according to 13.5.10 or replace driver | ||
| Indoor coil block | Clean filters and/or remove block or air by-pass | ||
| Indoor fan malfunction | Check the motor and capacitor (13.5.19) | ||
| Outdoor coil block | Remove block and/or avoid air by-pass | ||
| Outdoor fan malfunction | Check outdoor fan motors (13.5.9) | ||
| EEV malfunction | Check EEV (13.5.12) | ||
| Thermistor(s) malfunction | Check if any of fault codes #1-10 is shown on display board. Replace faulty thermistors (14.1.12.) | ||
| 13 | Heating capacity is not sufficient | Check all according to above cooling problem (10) | |
| Reverse valve | Check reversing valve operation (13.5.11) | ||
| Deicing not performed well (during low outdoors temperatures) | Check OCT and OAT thermistors fault codes (#1-2 and 7-8). Check OCT thermistor if connected well to pipe Check OAT thermistor if connected well. Check the thermistors operation (13.5.13) | ||
| 14 | Compressor is over heated | Electronic control | Check for any fault code shown on display board and act accordingly (13.4) |
| EEV problem | Check EEV (13.5.12) | ||
| Refrigerant leakage | Check refrigeration system (13.3) | ||
| Indoor coil block | Clean filters and/or remove block | ||
| Indoor fan malfunction | Check indoor fan motor and capacitor (13.5.19) | ||
| Outdoor coil block | Remove block and/or avoid air by-pass | ||
| Outdoor fan malfunction | Check outdoor fan motors (13.5.9) | ||
| Compressor malfunction | Check the compressor (13.5.10) | ||
| 15 | Compressor stops many times during operation | Check all according to above problem (12) | |
| HP Switch | Check if HPS fault code (#8) is accruing frequently If so. Check the switch operation (13.5.14) | ||
| LP Switch | Check if LPS fault code (#9) is accruing frequently. If so. check the switch operation (13.5.15) | ||
| 16 | Not all units are operating | Communication problems | Check the communication between outdoor and indoor units (13.5.17) |
| 17 | Unit is cooling while in heat mode | RV problem | Check RV operation (13.5.11) |
| IDU-ODU communication | Check the communication between outdoor and indoor units (13.5.17) | ||
| 18 | Compressor is generating abnormal noise | Phase order to compressor is wrong | Check compressor phase order |
| Compressor internal parts wearing | Replace compressor (14.1.11.) | ||
| Vibration | Check all piping connections. Check compressor rubbers are fixed well. Check all screws on unit metal chassis are tightened. Check that no piping is in contact with each other or with other parts. | ||
| 19 | Freezing of outdoor unit coil in heat mode and outdoor unit base is blocked with ice | Connect base heater | |
| 20 | The unit stop suddenly during operation | EMC interference to the A/C unit | Check for EMC problems (13.5.20.1) |
| 21 | Indoor unit Indicator leds may flicker | ||
| 22 | Other home appliances operation is faulty such as noise appears in the television picture, or the picture is distorted or static occurs in the radio sound | EMC interference by the A/C unit | Check for EMC problems (13.5.20.2) |
| 23 | All others | Check for any fault code shown on display board and act accordingly (13.4) |
| Problem | Cause | Remedy |
|---|---|---|
| • Unit does not operate. Standby indicator does not light up. | Unit not connected to power | ■ Plug in the power cord. |
| Power failure | ■ Check main fuse. | |
| • Unit does not operate. Standby indicator lights. | Remote control malfunctions The remote control is locked. | ■ Check remote control batteries. |
| ■ Try to operate from a closer distance. | ||
| ■ Start from on-unit controls. | ||
| ■ Perform reset operation by pressing buttons: (7) (8) for 5 sec. | ||
| ■ Unlock the remote control. | ||
| • Unit does not respond properly to remote control command. | IR signal does not reach unit. | ■ Check for obstruction between unit and remote control, Clear if needed. |
| Distance between remote control and unit too large or aimed at from improper angle. | ■ Get closer to unit. | |
| IR receiver on-unit exposed to strong light source. | ■ Dim lights, fluorecents especially | |
| • Air does not blow out from indoor unit. | De-icing protection mode is activated. | ■ Normal operation in HEATING mode. |
| Unit is in AUTO FAN mode. | ■ Normal operation in DRY mode. | |
| Over cooling in DRY. | ||
| • COOLING, DRY or HEATING does not start immediately. | 3-min. Compressor delay start. | ■ Normal operation for these modes. |
| • Unit functions but does not perform sufficiently. | Improper temperature setting. | ■ Reset temperature. |
| Unit capacity insufficient for load or room size. | ■ Consult your dealer. |
| Trouble | Possible Cause | Remedy |
|---|---|---|
| Air conditioner does not run at all. | 1. Power failure. | 1. Restore power. |
| 2. Leakage circuit breaker tripped. | 2. Contact service center. | |
| 3. Line voltage is too low. | 3. Consult your electrician or dealer. | |
| 4. Batteries in remote control unit have run down. | 4. Replace batteries. | |
| OPERATION lamp blinks and air conditioner does not operate. | Trouble in system. | Contact service center. |
| Compressor runs but soon stops. | Obstruction in front of condenser coil. | Remove obstruction. |
| Poor cooling (or heating) performance. | 1. Dirty or clogged air filter. | 1. Clean air filter to improve airflow. |
| 2. Heat source or many people in room. | 2. Eliminate heat source if possible. | |
| 3. Doors and/or windows are open. | 3. Shut them to keep the heat (or cold) out. | |
| 4. Obstacle near air intake or air discharge port. | 4. Remove it to ensure good airflow. | |
| 5. Thermostat is set too high for cooling (or too low for heating). | 5. Set the temperature lower (or higher). | |
| 6. (Outdoor temperature is too low for heating.) | 6. (Consult your dealer or try to use another heat appliance.) | |
| Clicking sound is heard from the air conditioner. | In heating or cooling operation, any plastic parts may expand or shrink due to a sudden temperature change. In this event, a clicking sound may occur. | This is normal, and the sound will soon disappear. |
| OPERATION lamp lights but outdoor unit will not run. | 1. The use of cellular phones near the air conditioner may cause disturbance to its normal operation. | 1. Turn off the power then restart the air conditioner after a while. |
| 2. Consult your dealer. |