Has your York air conditioner quit working? You don’t have to rearrange your entire day and wait for a service engineer. Save money and time by using the troubleshooting tips below. Even if you’ve never tried DIY repair before, you may be capable of finishing your work in no time. Minor malfunctions occur rather often, and you don’t need to be a professional engineer to fix them.
| Problem | Probable cause | Remedy |
| A.The air conditioner does not run. | 1. Power Failure. | 1. Wait for Power resume. |
| 2. Fuse blown or circuit breaker open. | 2. Replace the fuse or reset the breaker. | |
| 3. Voltage is too low. | 3. Find the cause and fix it. | |
| 4. Faulty contactor or relay. | 4. Replace the faulty component. | |
| 5. Electrical connections loose. | 5. Retighten the connection. | |
| 6. Thermostat adjustment too low (in heating mode) or too high (in cooling mode). | 6. Check Thermostat setting. | |
| 7. Faulty Capacitor. | 7. Find the cause then replace Capacitor. | |
| 8. Incorrect wiring, terminal loose. | 8. Check and retighten. | |
| 9. Pressure switch tripped. | 9. Find the cause before reset. | |
| B.The outdoor fan runs but the compressor will not start. | 1. Motor winding cut or grounded. | 1. Check the wiring and the compressor winding resistance. |
| 2. Faulty Capacitor. | 2. Find the cause then replace Capacitor. | |
| C.There is insufficient heating or cooling. | 1. There is a gas leak. | 1. Remove charge, repair, evacuate and recharge. |
| 2. Liquid and gas line insulated together. | 2. Insulate them separately. | |
| 3. The room was probably very hot (cool) when you started the system. | 3. Wait while unit has enough time to cool the room. | |
| D.The compressor run continuously. | 1. Thermostat adjustment too low (in heating mode) or too high (in cooling mode). | 1. Check Thermostat setting. |
| 2. Faulty fan. | 2. Check condenser air circulation. | |
| 3. Refrigerant charge too low. leak. | 3. Find leak, repair and recharge. | |
| 4. Air or incondensable in refrigerant circuit. | 4. Remove charge, evacuate and recharge. | |
| E. The compressor starts but shuts down quickly. | 1. Too much or too little refrigerant. | 1. Remove charge, evacuate and recharge. |
| 2. Faulty compressor. | 2. Determine the cause and replace compressor. | |
| 3. Air or incondensables in refrigerant circuit. | 3. Remove charge, evacuate and recharge. | |
| 4. Changeover valve damaged or blocked open (heat pump unit) | 4. Replace it. | |
| F. Clicking sound is heard from the air conditioner. | In heating or cooling operation any plastic parts may expand or shrink due to a sudden temperatue change in this event, a clicking sound may occur. |
| Symptoms | Causes | Solution |
| Unit does not start | • Power failure. | • Wait for the comeback of power. |
| • Power switch is off. | • Switch on the power. | |
| • Fuse of power switch may have burned. | • ReplLocation: | |
| • Batteries of remote controller exhausted or other problem of controller. | • Replace the batteries or check the controller. | |
| Air flowing normally but completely can’t cooling | • Temperature is not set correctly. | • Set the temperature properly. |
| • Be in 3 minutes protection of compressor. | • Wait. | |
| Units start or stop frequently | • Refrigerant is too little or too much. | • Check leakage, and rightly recharge refrigerant. |
| • Air or no concretingc gas in the refrigerating circuit. | • Vacuum and recharge refrigerant. | |
| • Compressor is malfunction. | • Maintenance or change compressor. | |
| • Voltage is too high or too low. | • Install manostat. | |
| • System circuit is blocked. | • Find reasons and solution. | |
| Low cooling effect | • Outdoor unit and indoor unit heat exchanger is dirty. | • Clean the heat exchanger. |
| • The air filter is dirty. | • Clean the air filter. | |
| • Inlet/outlet of indoor/outdoor units is blocked. | • Eliminate all dirties and make air smooth. | |
| • Doors and windows are open | • Close doors and windows. | |
| • Sunlight directly shine. | • Make curtains in order to shelter from sunshine. | |
| • Too much heat resource. | • Reduce heat source. | |
| • Outdoor temp, is too high. | • AC cooling capacity reduces (normal). | |
| . Leakage of refrigerant or lack of refrigerant. | • Check leakage and rightly recharge refrigerant. | |
| Low heating effect | • Outdoor temperature is lower than 7°C | • Use heating device. |
| • Doors and windows not completely closed. | • Close doors and windows. | |
| • Leakage of refrigerant or lack of refrigerant. | • Check leakage and rightly recharge refrigerant. | |
| The fan speed can not be changed. | • Check whether the MODE indicated on the display is “AUTO” | When the automatic mode is selected, the air conditioner will automatically change the fan speed. |
| • Check whether the MODE indicated on the display is “DRY” | When dry operation is selected, the air conditioner automatically change the fan speed. The fan speed can be selected during “COOL”, “FAN ONLY”, and “HEAT”. | |
| The remote controller signal is not transmitted even when the ON/OFF button is pushed. | • Check whether the batteries in the remote controller are exhausted. | The power supply is off. |
| The TEMP, indicator does not come on. | • Check whether the MODE indicated on the display is FAN ONLY | The temperature cannot be set during FAN mode. |
| The indication on the display disappears after a lapse of time. | • Check whether the timer operation has come to an end when the TIMER OFF is indicated on the display. | The air conditioner operation will stop up to the set time. |
| The TIMER ON indicator goes off after a lapse of certain time. | • Check whether the timer operation is started when the TIMER ON is indicated on the display. | Up to the set time, the air conditioner will automatically start and the appropriate indicator will go off. |
| No receiving tone sounds from the indoor unit even when the ON/OFF button is pressed. | • Check whether the signal transmitter of the remote controller is properly directed to the infrared signal receiver of the indoor unit when the ON/OFF button is pressed. | Directly transmit the signal transmitter of the remote controller to the infrared signal receiver of the indoor unit, and then repeatly push the ON/OFF button twice. |
| PROBLEM | POSSIBLE CAUSE | REMED |
| Fan motor will not run. | No power | Check voltage at electrical outlet. Correct if none. |
| Power supply cord | Check voltage at the power cord terminal. Replace the power cord if none. | |
| Will disconnected or connection loose | Connect wire. Repair or replace loose terminal. | |
| Main switch failure | Check and replace the main switch if failure. | |
| Capacitor (Discharge capacitor before testing) | Test capacitor. Replace if not within +/-10% of manufacture’s rating. Replace if shorted, open or damaged. | |
| Will not rotate | Fan blade hitting shroud or blower hitting scroll. Realign assembly. Check fan motor bearings. Replace the motor if motor shaft do not rotate. | |
| Fan motor runs intermittently | Cycles on overload. | Check voltage. Call an electrician if not within limits. |
| Test capacitor. Replace if not within +/-10% of manufacture’s rating. | ||
| Check bearings. Replace the motor if the fan blade cannot rotate freely. | ||
| Pay attention to any change from high speed to low speed. Replace the motor if the speed does not change. | ||
| Fan motor noise. | Fan | Replace the fan if cracked, out of balance, or partially missing. |
| Blower | Replace the blower if cracked, out of balance, or partially missing. | |
| Loose screws | Tighten them. | |
| Worn bearings | Replace the motor if knocking sounds continue when running or loose, or the motor hums or noise appears to be internal while running. |
| Fault | Causes / Action |
| 1. The compressor does not operate 3 minutes after the air conditioner unit is started. | – Protection against frequent starting. Wait for 3 to 4 minutes for the compressor to start operating. |
| 2. The air conditioner unit does not operate. | – Power failure, or the fuse need to be replaced. |
| – The power plug is disconnected. | |
| – It is possible that your delay timer has been set incorrectly. | |
| – If the fault persist after all these verifications, please contact the air conditioner unit installer. | |
| 3. The air flow is too low. | – The air filter is dirty. |
| – The doors or windows are open. | |
| – The air suction and discharge are clogged. | |
| – The regulated temperature is not high enough. | |
| 4. Discharge air flow has bad odour. | – Odours may be caused by cigarettes, smoke particles, perfume etc. which might have adhered onto the coil. |
| 5. Condensation on the front air grille of the indoor unit. | – This is caused by air humidity after an extended long period of operation. |
| – The set temperature is too low, increase the temperature setting and operate the unit at high fan speed. | |
| 6. Water flowing out from the air conditioner unit. | – Switch off unit and call dealer. |
| 7. Hissing air flow sound from the air conditioner unit during operation. | – Refrigerant fluid flowing into the evaporator coil. |