Most air conditioners display an error code in case of any problem which allows you to localize the cause of the malfunction. The models are also equipped with a self-test mode, which creates additional possibilities for detecting the breakdown. In addition, you can find the cause of the problem looking at the symptoms of breakdowns – they are listed in the table below.
Bryant 538F air conditioner troubleshooting
Possible cause | Solution | |
---|---|---|
Indoor unit can’t receive remote control's signal or remote control has no action. | • Determine if interference has occurred due to severe static electricity or voltage surge. | • Remove the plug from the wall outlet. Wait three minutes. Reinsert the plug into the outlet, then turn the unit on. |
• Determine if the remote control is within the signal receiving range. | • Make sure the remote control is within the receiving range: 26.2ft(8m). | |
• Determine if other obstacles are preventing signal receptivity. | • Eliminate possible obstacles that can block signal reception. | |
• Unit not responding to the remote control. | • Select proper angle and point the remote controller at the receiving window on indoor unit. | |
• Determine if remote control is working properly. Possible problems: low sensitivity, fuzzy display or no display. | • Replace batteries if remote control performs slowly or poorly. | |
• No display when operating remote controller? | • Check whether remote controller appears to be damaged. If yes, replace it. | |
• Fluorescent lamp in room? | • Take the remote controller close to indoor unit. | |
• Turn off the fluorescent lamp and then try it again. | ||
Air conditioner in it Haoc nnt urill uut;o iiui release air. | • Air inlet or air outlet of indoor unit is blocked? | • Eliminate obstacles. |
• Under heating mode, indoor temperature is reached to set temperature? | • After reaching to set temperature, indoor unit will stop blowing out air. | |
• Heating Mode not starting right after setting it in the remote control. | • In order to prevent blowing out cold air, indoor unit will be started after delaying for several minutes, which is a normal phenomenon. y | |
Air conditioner does not start. | • Power failure? | • Wait until power recovery. |
• Is plug loose? | • Reinsert the plug. | |
• Air switch trips off or fuse is burnt out? | • Ask professional to replace air switch or fuse. | |
• Wiring has malfunction? | • Ask professional to replace it. | |
• Unit has restarted immediately after stopping operation? | • Wait for 3min, and then turn on the unit again. | |
• Is remote control function setting correct? | • Reset the function. | |
Mist is coming out of indoor unit's air outlet. | • Indoor temperature and hum- deity is high? | • Occurs if indoor air rapidly cools down. After a while, indoor temperature and humidity will be decrease and mist will disappear. |
Set temperature can’t be adjusted. | • Unit is operating under auto mode? | • Temperature can't be adjusted under auto mode. Please switch the operation mode if you need to adjust temperature. |
• Your required temperature exceeds the set temperature range? | • Set temperature range: 16'C ~30fC . | |
Cooling or heating is inaccurate. | • Voltage is too low? | • Wait until the voltage resumes normal. |
• Filter is dirty? | • Clean the filter. | |
• Set temperature is in proper range? | • Adjust temperature to proper range. | |
• Door and window are open? | • Close door and window. |
Bryant DURAPAC 580F air conditioner troubleshooting
PROBLEM | CAUSE | REMEDY |
---|---|---|
Burners Will Not Ignite. | Misaligned spark electrodes. | Check flame ignition and sensor electrode positioning. Adjust as needed. |
No gas at main burners. | Check gas line for air; purge as necessary. After purging gas line of air. allow gas to dissipate for at least 5 minutes before attempting to relight unit. | |
Check gas valve. | ||
Water in gas line. | Drain water and install drip leg to trap water. | |
No power to furnace. | Check power supply, fuses, wiring, and circuit breaker. | |
No 24 v power supply to control circuit. | Check transformer. Transformers with internal overcurrent protection require a cool-down period before resetting. Check 24-v circuit breaker: reset if necessary. | |
Misfired or loose connections. | Check all wiring and wire nut connections. | |
Burned-out heat anticipator in thermostat. | Replace thermostat. | |
Broken thermostat wires. | Run continuity check. Replace wires if necessary. | |
Inadequate Heating. | Dirty air filter. | Clean or replace filter as necessary. |
Gas input to unit too low. | Check gas pressure at manifold. Clock gas meter for input. If too low. increase manifold pressure or replace with correct orifices. | |
Unit undersized for application. | Replace with proper unit or add additional unit. | |
Restricted airflow. | Clean filter, replace filter, or remove any restrictions. | |
Blower speed too low. | Install alternate motor, if applicable, or adjust pulley to increase fan speed. | |
Limit switch cycles main burners. | Check rotation of blower, thermostat heat anticipator settings, and temperature rise of unit. Adjust as needed. | |
Too much outdoor air. | Adjust minimum position. | |
Check economizer operation. | ||
Poor Flame Characteristics. | Incomplete combustion (lack of combustion air) results in: | Check all screws around flue outlets and burner compartment. Tighten as necessary. |
Aldehyde odors. CO. sooting flame, or floating flame. | Cracked heat exchanger. | |
Overfired unit — reduce input, change orifices, or adjust gas line or manifold pressure. | ||
Check vent for restriction. Clean as necessary. | ||
Check orifice to burner alignment. | ||
Burners Will Not Turn Off. | Unit is locked into Heating mode for a one minute minimum. | Wait until mandatory one minute time period has elapsed or power to unit. |
Compressor and Condenser Fan Will Not Start. | Power failure. | Call power company. |
Fuse blown or circuit breaker tripped. | Replace fuse or reset circuit breaker. | |
Defective thermostat, contactor, transformer, or control relay. | Replace component. | |
Insufficient line voltage. | Determine cause and correct. | |
Incorrect or faulty wiring. | Check wiring diagram and rewire correctly. | |
Thermostat settinq too hiqh. | Lower thermostat settinq below room temperature. | |
Compressor Will Not Start but Condenser Fan Runs. | Faulty wiring or loose connections in compressor circuit. | Check wiring and repair or replace. |
Compressor motor burned out, seized, or internal over- load open. | Determine cause. Replace compressor. | |
Defective overload. | Determine cause and replace. | |
Compressor locked out | Determine cause for safety trip and reset lockout. | |
One leg of 3-phase power dead. | Replace fuse or reset circuit breaker. Determine cause. | |
Compressor Cycles (other than normally satisfying thermostat). | Refrigerant overcharge or undercharge. | Recover refrigerant, evacuate system, and recharge to nameplate. |
Defective compressor. | Replace and determine cause. | |
Insufficient line voltage. | Determine cause and correct. | |
Blocked condenser. | Determine cause and correct. | |
Defective overload. | Determine cause and replace. | |
Defective thermostat. | Replace thermostat. | |
Faulty condenser-fan motor. | Replace. | |
Restriction in refrigerant system. | Locate restriction and remove. | |
Compressor Operates continuously. | Dirty air filter. | Replace filter. |
Unit undersized for load. | Decrease load or increase unit size. | |
Thermostat set too low. | Reset thermostat. | |
Low refrigerant charge. | Locate leak, repair, and recharge. | |
Air in system. | Recover refrigerant, evacuate system, and recharge. | |
Condenser coil dirty or restricted. | Clean coil or remove restriction. | |
Excessive Head Pressure. | Dirty air filter. | Replace filter. |
Dirty condenser coil. | Clean coil. | |
Refrigerant overcharged. | Recover excess refrigerant. | |
Faulty TXV. | 1. Check TXV bulb mounting and secure tightly to suction line. | |
2. Replace TXV if stuck open or closed. | ||
Air in system. | Recover refrigerant, evacuate system, and recharge. | |
Condenser air restricted or air short-cycling. | Determine cause and correct. | |
Head Pressure Too Low. | Low refrigerant charge. | Check for leaks, repair, and recharge. |
Restriction in liquid tube. | Remove restriction. | |
Excessive Suction Pressure. | High heat load. | Check for source and eliminate. |
Faulty TXV. | 1. Check TXV bulb mounting and secure tightly to suction line. | |
2. Replace TXV if stuck open or closed. | ||
Refrigerant overcharged. | Recover excess refrigerant. | |
Suction Pressure Too Low. | Dirty air filter. | Replace filter. |
Low refrigerant charge. | Check for leaks, repair, and recharge. | |
Metering device or low side restricted. | Remove source of restriction. | |
Faulty TXV. | 1. Check TXV bulb mounting and secure tightly to suction line. | |
2. Replace TXV if stuck open or closed. | ||
Insufficient evaporator airflow. | Increase air quantity. Check filter and replace if necessary. | |
Temperature too low in conditioned area. | Reset thermostat. | |
Field-installed filter drier restricted. | Replace. |
Bryant DURAPAC PLUS 581B air conditioner troubleshooting
PROBLEM | CAUSE | REMEDY |
---|---|---|
Subcooling Mode (Liquid Reheat) Will Not Energize. | No power to control transformer from evaporator-fan motor. | Check power source and evaporator-fan relay. Ensure all wire connections are tight. |
No power from control transformer to liquid line solenoid valve. | 1. Fuse open; check fuse. Ensure continuity of wiring. | |
2. Low-pressure switch open. Cycle unit off and allow low- pressure switch to reset. Replace switch if it will not close. | ||
3. Transformer bad; check transformer. | ||
Liquid line solenoid valve will not operate. | 1. Solenoid coil defective; replace. | |
2. Solenoid valve stuck open; replace. | ||
Liquid line solenoid valve will not open. | Valve is stuck closed; replace valve. | |
Low System Capacity. | Low refrigerant charge or frosted evaporator coil. | 1. Check charge amount. Charge per Fig. 52-55. |
2. Evaporator coil frosted; check and replace low- pressure switch if necessary. | ||
Loss of Compressor Superheat Conditions with Subcooling/Reheat Dehumidification Coil Energized. | Thermostatic expansion valve (TXV). | 1. Check TXV bulb mounting, and secure tightly to suction line. |
2. Replace TXV if stuck open or closed. | ||
Reheat Mode Will Not Energize. | No power to control transformer from evaporator-fan motor. | Check power source and evaporator-fan relay. Ensure all wire connections are tight. |
No power from control transformer to hot gas line solenoid valve. | 1. Fuse open; check fuse. Ensure continuity of wiring. | |
2. Low-pressure switch open. Cycle unit off and allow low- pressure switch to reset. Replace switch if it will not close. | ||
3. Transformer bad; check transformer. | ||
Hot gas line solenoid valve will not operate. | 1. Solenoid coil defective; replace. | |
2. Solenoid valve stuck closed; replace. | ||
Low refrigerant charge or frosted evaporator coil. | 1. Check charge amount. Charge per Fig. 52-55. | |
2. Evaporator coil frosted; check and replace low- pressure switch if necessary. | ||
Loss of Compressor Superheat Conditions with Subcooling/Reheat Dehumidification Coil Energized. | Thermostatic expansion valve (TXV). | 1. Check TXV bulb mounting, and secure tightly to suction line. |
2. Replace TXV if stuck open or closed. | ||
Excessive Superheat. | Liquid line solenoid valve will not operate. | Valve is stuck; replace valve. |
Hot gas line solenoid valve will not close. | Valve is stuck; replace valve. | |
Compressor and Condenser Fan Will Not Start | Power failure. | Call power company. |
Fuse blown or circuit breaker tripped. | Replace fuse or reset circuit breaker. | |
Defective thermostat, contactor, transformer, or control relay. | Replace component. | |
Insufficient line voltage. | Determine cause and correct. | |
Incorrect or faulty wiring. | Check wiring diagram and rewire correctly. | |
Thermostat setting too high. | Lower thermostat setting below room temperature. | |
Compressor Will Not Start But Condenser Fan Runs | Faulty wiring or loose connections in com- pressor circuit. | Check wiring and repair or replace. |
Compressor motor burned out. seized, or internal overload open. | Determine cause. Replace compressor. | |
Defective run/start capacitor, overload, start relay. | Determine cause and replace. | |
One leg of 3-phase power dead. | Replace fuse or reset circuit breaker. Determine cause. | |
Compressor Cycles (Other Than Normally Satisfying Thermostat) | Refrigerant overcharge or undercharge. | Recover refrigerant, evacuate system, and recharge to nameplate. |
Defective compressor. | Replace and determine cause. | |
Insufficient line voltage. | Determine cause and correct. | |
Blocked condenser. | Determine cause and correct. | |
Defective run/start capacitor, overload, or start relay. | Determine cause and replace. | |
Defective thermostat. | Replace thermostat. | |
Faulty condenser-fan motor or capacitor. | Replace. | |
Restriction in refrigerant system. | Locate restriction and remove. | |
Compressor Operates Continuously | Dirty air filter. | Replace filter. |
Unit undersized for load. | Decrease load or increase unit size. | |
Thermostat set too low. | Reset thermostat. | |
Low refrigerant charge. | Locate leak, repair, and recharge. | |
Leaking valves in compressor. | Replace compressor. | |
Air in system. | Recover refrigerant, evacuate system, and recharge. | |
Condenser coil dirty or restricted. | Clean coil or remove restriction. | |
Excessive Head Pressure | Dirty air filter. | Replace filter. |
Dirty condenser coil. | Clean coil. | |
Refrigerant overcharged. | Recover excess refrigerant. | |
Air in system. | Recover refrigerant, evacuate system, and recharge. | |
Condenser air restricted or air short-cycling. | Determine cause and correct. | |
Head Pressure Too Low | Low refrigerant charge. | Check for leaks, repair, and recharge. |
Compressor valves leakinq. | Replace compressor. | |
Restriction in liquid tube. | Remove restriction. | |
Excessive Suction Pressure | High heat load. | Check for source and eliminate. |
Compressor valves leaking. | Replace compressor. | |
Refrigerant overcharged. | Recover excess refrigerant. | |
Suction Pressure Too Low | Dirty air filter. | Replace filter. |
Low refrigerant charge. | Check for leaks, repair, and recharge. | |
Metering device or low side restricted. | Remove source of restriction. | |
Insufficient evaporator airflow. | Increase air quantity. Check filter and replace if necessary. | |
Temperature too low in conditioned area. | Reset thermostat. | |
Outdoor ambient below 25 F. | Install low-ambient kit. | |
Evaporator Fan Will Not Shut Off | Time off delay not finished. | Wait for 30-second off delay. |