Airwell air conditioner troubleshooting

Airwell air conditioner troubleshooting

The Airwell company is one of the leading worldwide suppliers of air conditioning systems with presence in more than 80 countries of the world. Its range includes all types of industrial, semi-industrial and household equipment. Almost all the equipment possesses an option of self-diagnostics with display of the malfunction code. The Airwell air conditioner troubleshooting system will help to decipher these codes.

General System Failures and Corrective Actions
Never open the Outdoor unit before turning off the Power.

Airwell air conditioner troubleshooting

SYMPTOMPROBABLE CAUSECORRECTIVE ACTION
Indoor unit power supply indicator (Red LED) does not light upNo power supplyCheck power supply. If OK, check display and display wiring. if OK, replace controller
Indoor unit does not respond to remote control messageRemote control message not
reached the indoor unit
Check remote control batteries, if OK, check display and display wiring, if OK, replace display PCB. If still not OK replace controller
Indoor unit responds to remote control message but Operate indicator (Green LED) does not light upProblem with display PCBReplace display PCB. If still not OK replace controller
Indoor fan does not start (louvers are opened and Green LED is ON)Unit in heat mode and coil is still not warmChange to cool mode
Outdoor unit is in opposite modeChange operation mode
Problem with controller or capacitorChange 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
Indoor fan works when unit is OFF, and indoor fan speed is not changed by remote control command.Controller problemReplace controller
Water leakage from indoor unitIndoor unit drainage tube is blockedCheck and open drainage tube
One indoor unit or more are operating in cool mode with no capacity, and the other units have water leaks/freezing problemsThe communication wires of the indoor units are switchedCheck and correct the communication wires connection
One indoor or more are operating in heat mode with a limited capacity, and the coil on the other units are very hotThe communication wires of the indoor units are switched
Outdoor unit display board and leds are offNo power supplyCheck the connections and the wiring on the main terminal - Repair if needed.
PFC Chock coilCheck the PFC Chock coil
Burnt fuseCheck 20A fuse on the Filter
Compressor operates but one or more units generates no capacityEEV problem
Refrigerant leakageCheck refrigeration system
Indoor coil blockClean filters and/or remove block
Outdoor coil blockRemove block and/or avoid air by-pass
Compressor is over heated and unit does not generate capacityEEV problemCheck EEV
Refrigerant leakageCheck refrigeration system
Indoor coil blockClean filters and/or remove block
Outdoor coil blockRemove block and/or avoid air by-pass
Compressor stops during operationElectronic controlCheck diagnostics
Refrigerant leakageCheck refrigeration system
Not all units are operatingCommunication problemsCheck diagnostics
Compressor does not startElectronics control problem or protection
Unit works in wrong mode (cool instead of heat or heat instead of cool)Electronics or RV problemCheck RV
All components are operating properly but no cooling or no heatingRefrigerant leakCheck refrigeration system
Compressor motor is generating noise and no suction occursPhase order to compressor is wrongCheck compressor phase order
Freezing of outdoor unit in heat mode and outdoor unit base is blocked with iceConnect base heater
The unit stop suddenly during operationEMC interference to the A/C unitCheck for EMC problems
Indoor unit(s) Indicator(s) leds may flicker
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
All othersSpecific problems of indoor or outdoor unitsCheck diagnostics