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Why is the Air Conditioner noisy?

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Is your Air Conditioner noisy?

Noisy Ac Maintenance Company Dubai

Noise from the indoor unit

Usually, the noise from the air conditioner appears several years after using the Ac without service, or even during its operation.

But there are also possible extraneous sounds immediately after the installation of the split system.

It is very important to correctly identify the source of the noise, after that, knowing the cause, it will be much easier to eliminate unpleasant sounds.

Causes of Ac noise:

Fan noise

    • fan bearing

      • during operation, a roar is heard, the fan stops immediately after shutdown, scrolls with a small

    • grazing

      • Usually in old air conditioners due to warping and deformation of plastics

    • grazing ice

      • details of the reasons for the formation and elimination of ice are described in the article

Buzz off

  • buzz is not loud, but prevents to fall asleep

  • common in cheap Chinese air conditioners

  • problem is solved by replacing the power transformer

Hiss on power

  • the cause is the flow of refrigerant in the air conditioner tubes

  • manifests when the tubes break and the section narrows

  • also observed when clogged internal cavities tubes

  • after installation of used air conditioners

Air Conditioner vibration

  • sometimes the air conditioner can vibrate very much, almost flying off the mounts on the wall

  • the reason is the imbalance of the fan impeller

  • can fly off a balancing weight (like on car disks)

  • more often the cause is severe contamination of the impeller – unbalancing occurs either because of the irregularity of the pollution along the length or after a piece of dirt flies off from a small area

Noise drainage pump

  • drainage pump starts to crack when it fails, in this case you need to clean or replace the pump

  • crackling will also occur when the air conditioner is idle for a long time, as the pump produces a crackling sound when it is dry, it will stop after a short cod

Noise from the Ac outdoor unit

Since the external units of air conditioners are installed in close proximity to the internal one, most often outside the window, therefore, the noise from the external unit sometimes gets in the way, especially at night, not only to the owner of the air conditioner, but also to his neighbors.

Causes of noise from the external unit

No vibration damping rubber gaskets

  • vibration dampers located between the brackets and legs of the air conditioner
  • they reduce the transmission of vibrations from the air conditioner to the wall

The mounting bracket bolts are in contact with the metal reinforcement of the reinforced concrete wall

  • at the same time there is a feeling that the wall is vibrating

  • it is possible to eliminate only by drilling holes in another place (near) and moving the fixings

Compressor wear

  • after many years of operation and lack of maintenance, the compressor will have extraneous noises and vibrations

Fan noise

  • grazing and foreign objects are often caught

  • ice grazing in heating mode

  • overtones from design elements

  • cheap air conditioners often vibrate lattice elements, covers

  • usually solved by removing them or by laying seals

  • do not be afraid to remove non-functional elements, they serve only for appearance and they are often saved

We have analyzed the main causes and ways of dealing with noisy air conditioners, but it is worth remembering that after many years of work, the equipment will not work as new, especially if the main body material is plastic.

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Bryant Air Conditioners Error Codes

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Bryant Air Conditioners Error Codes

Bryant Ac Maintenance Dubai

Table 19 shows the status codes flashed by the amber status light.Most system problems can be diagnosed by reading the status code as flashed by the amber status light on the control board.

The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code.

Bryant Air Conditioners Error Codes

A NOTE ABOUT SAFETY Any time you see this symbol in manuals, instructions and on the unit, be aware of the potential for personal injury. There are three levels of precaution: DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

PERSONAL INJURY, DEATH AND / OR PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury, death or property damage. Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or service agency must use factory–authorized kits or accessories when modifying this product. Read and follow all instructions and warnings, including labels shipped with or attached to unit before operating your new air conditioner.

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Disconnect all electrical power to the indoor air handler or furnace before removing access panels to perform any maintenance. Disconnect power to both the indoor and outdoor units.

Bryant Air Conditioners Heat Pumps Troubleshooting Dubai

Fault: System Communications Failure

Possible Cause And Action: Communication with User Interface lost. Check wiring to User Interface, indoor and outdoor units

Fault: Invalid Model Plug

Possible Cause And Action: Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug

Fault: High Pressure Switch Open

Possible Cause And Action: High —pressure switch trip. Check refrigerant charge, outdoor fan operation and coils for airflow restrictions

Fault: Low Pressure Switch or Discharge Temp Switch Open

Possible Cause And Action: Low -pressure switch or discharge temperature switch trip. Check refrigerant charge and indoor air flow.

Fault: Control Fault

Possible Cause And Action: Outdoor unit control board has failed. Control board needs to be replaced.

Fault: Outdoor Air Temp Sensor Fault

Possible Cause And Action: Outdoor air sensor not reading or out of range. Ohm out sensor and check wiring

Fault: Outdoor Coil Sensor Fault

Possible Cause And Action: Coil sensor not reading or out of range. Ohm out sensor and check wiring

Fault: Thermistors out of range

Possible Cause And Action: Improper relationship between coil sensor and outdoor air sensor. Ohm out sensors and check wiring

Fault: Low Stage Thermal Cutout

Possible Cause And Action: Compressor operation detected then disappears while low stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long

Fault: High Stage Thermal Cutout

Possible Cause And Action: Compressor operation detected then disappears while high stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long

Fault: Low Stage Thermal Lockout

Possible Cause And Action: Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked out for 4 hours or until 24v power recycled.

Bryant Air Conditioners Heat Pumps Manual PDF

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Beko AC Error Codes and Troubleshooting

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Beko Ac Error Codes and Trouble Shooting

Beko Ac Maintenance Dubai

When air conditioner status is abnormal, temperature indicator on indoor unit will blink to display corresponding error code. Please refer to blow list for identification of error.

Error Codes Cause
H1 Means defrosting status. It’s the normal phenomenon.
E5 It can be eliminated after restarting the unit. If not, please contact qualified professionals for service.
U8 It can be eliminated after restarting the unit. If not, please contact qualified professionals for service.
H6 It can be eliminated after restarting the unit. If not, please contact qualified professionals for service.
C5 Please contact qualified professionals for service.
F1 Please contact qualified professionals for service.
F2 Please contact qualified professionals for service.

Note: If there’re other error codes, please contact qualified professionals for service.

Warning

When below phenomenon occurs, please turn off air conditioner and disconnect power immediately, and then contact the dealer or qualified professionals for service.

  • Power cord is overheating or damaged.
  • There’s abnormal sound during operation.
  • Circuit break trips off frequently.
  • Air conditioner gives off burning smeel.
  • Indoor unite is leaking.

*Do not repair or refit the air conditioner by yourself.
*If the air conditioner operates under abnormal conditions, it may cause malfunction, electric shock or fire hazard.

Beko AC Troubleshooting

Check the following points before requesting repairs or service. If the fault persists, please contact your dealer or service center.

*The air conditioner does no operate.
-Have you made a mistake in timer operation?
-Has the fuse blown or has the circuit breaker been tripped?

*The room has a peculiar odor.
-Check that this is not a damp smell exuded by the walls, carpet, furniture, or cloth items in the room.

*It seems that condensation is leaking from the air conditioner.
-Condensation occurs when the airflow from the air conditioner cools the warm room air.

*Air conditioner does not operate for about 3 minutes when restarted.
-This is the protector of the mechanism.
-Wait about three minutes and operation will begin.

*Does not cool or heat effectively.
– Is the air filter dirty? See air filter cleaning instructions.
– Has the temperature been set incorrectly?
– Are the indoor unit’s air inlet or outlet vents obstructed?

*The air conditioner operation is noisy.
-For a noise that sounds like water flowing. This is the sound of freon flowing inside the air conditioner unit.
-For a noise that sounds like the compressed air releasing into atmosphere. This is the sound of the dehumidifying water being processed inside the air conditioning unit.

*Remote control display is faint, or no display at all.
-Are the batteries depleted?
-Are the batteries inserted in the opposite (+) and (-) directions?

*Crack sound is heard.
This sound is generated by the expansion/constriction of the front panel, etc. due to changes of temperature.

Beko Split Air Conditioner Manual PDF

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Aux AC Error Codes and Troubleshooting

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Aux Ac Error Codes and Trouble Shooting

Aux Ac Maintenance Dubai

AUX Air Conditioning Error Codes;

1.HS(Y) HSA(Y) HSB(Y) HSF (Y) HV(Y) HVA(Y) digital display for the series air-conditioner faults:

Error Codes Problem
E4 PG motor feedback is abnormal. The display precedence level: 1
E1 Plastic temp sensor is abnormal. The display precedence level: 2
E3 Copper temp sensor is abnormal (indoor). The display precedence level: 3
E2 Copper temp sensor is abnormal (outdoor). The display precedence level: 4

2. H (Except KFR-25G/H) H1 HA HB series faults display:

  • Fault source: PG motor feedback is abnormal
  • Display mode: Timing light twinkles 4 times in every 8 seconds
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: Timing light twinkles 1 times in every 8 seconds
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal (indoor)
  • Display mode: Timing light twinkles 2 times in every 8 seconds
  • The display precedence level: 3
  • Fault source: Copper temp sensor is abnormal (indoor)
  • Display mode: Timing light twinkles 1 times in every 1 seconds
  • The display precedence level: 4

3. H(Y) Model air conditioner fault display:

  • Fault source: PG motor feedback is abnormal
  • Display mode: Timing light twinkles 4 times in every 8 seconds
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: Timing light twinkles 1 times in every 8 seconds
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal (indoor)
  • Display mode: Timing light twinkles 2 times in every 8 seconds
  • The display precedence level: 3
  • Fault source: Copper temp sensor is abnormal (outdoor)
  • Display mode: Timing light twinkles 1 times in every 1 seconds
  • The display precedence level: 4

4. EA EC EM EY EZ EAA EAD EL HS1 HSZ HL1 HLZ P P1 ZZ CZ digital display series ac faults:

  • Fault source: PG motor feedback is abnormal
  • Display mode: E4
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: E1
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal (indoor)
  • Display mode: E3
  • The display precedence level: 3

5. All of the other E series except EA EC EM EY EZ EAA EAD:

  • Fault source: PG motor feedback is abnormal
  • Display mode: Timing light twinkles 4 times in every 8 seconds
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: Timing light twinkles 1 times in every 8 seconds
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal (indoor)
  • Display mode: Timing light twinkles 2 times in every 8 seconds
  • The display precedence level: 3

6. QA QB QD digital display series ac faults:

  • Fault source: PG motor feedback is abnormal
  • Display mode: E4
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: E1
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal
  • Display mode: E3
  • The display precedence level: 3
  • Fault source: Over-current oprotection
  • Display mode: E6
  • The display precedence level: 4

7. QC QQ light display series air-conditioner faults:

  • Fault source: PG motor feedback is abnormal
  • Display mode: Timing light twinkles 4 times in every 8 seconds
  • The display precedence level: 1
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: Timing light twinkles 1 times in every 8 seconds
  • The display precedence level: 2
  • Fault source: Copper temp sensor is abnormal
  • Display mode: Timing light twinkles 3 times in every 8 seconds
  • The display precedence level: 3
  • Fault source: Over-current oprotection
  • Display mode: Timing light twinkles 6 times in every 8 seconds
  • The display precedence level: 4

8. Faults display of 18000BTU~24000BTU wall unit series ac non-digital tube displays:

  • Fault source: PG motor feedback is abnormal
  • Display mode: Timing light twinkles 1 times in every 8 seconds
  • The display precedence level: 2
  • appearance: System turns off
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: Timing light twinkles 2 times in every 8 seconds
  • The display precedence level: 3
  • appearance: System turns off
  • Fault source: Copper temp sensor is abnormal
  • Display mode: Timing light twinkles 8 times in every 8 seconds
  • The display precedence level: 4
  • appearance: System doesn’t turns off

Digital tube displays:

  • Fault source: PG motor feedback is abnormal
  • Display mode: E1
  • The display precedence level: 2
  • appearance: System turns off
  • Fault source: Plastic temp sensor is abnormal
  • Display mode: E3
  • The display precedence level: 3
  • appearance: System turns off
  • Fault source: Copper temp sensor is abnormal
  • Display mode: E2
  • The display precedence level: 4
  • appearance: System doesn’t turn off
  • E1: Temperature sensor of air intake fault
  • E2: Temperature sensor of outdoor coil fault
  • E3: Temperature sensor of indoor coil fault
  • E4: PG motor of indoor unit feedback fault

AUX Air Conditioning Wall Mounted Error Codes

Self-check information: Hint to defrosting

  • Self-check code of luminotron: Flicker 1 time/1s
  • Digital self-check code: Indicates “dF“or defrosting indicator displays

Self-check information: Hint to defense against cold wind

  • Self-check code of luminotron: Flicker 1 time/3s
  • Digital self-check code: Fan motor picture not running

Self-check information: Failure of room temperature sensor

  • Self-check code of luminotron: Flicker 2 times/4s (Flicker 2 times/8s)
  • Digital self-check code: E2/(L2)

Self-check information: Failure of coiled pipe sensor

  • Self-check code of luminotron: Flicker 3 times/5s (Flicker 1 time/8s)
  • Digital self-check code: E3/(L1)

Self-check information: Abnormality of outdoor unit

  • Self-check code of luminotron: Flicker 4 times/6s (luminating)
  • Digital self-check code: E4/(E5)

Self-check information: Without feedback of internal fan motor

  • Self-check code of luminotron: Flicker 5 times/7s (Flicker 6 times/8s)
  • Digital self-check code: E5/(L6)

Self-check information: Zero crossing signal without current

  • Self-check code of luminotron: Flicker 6 times/8s
  • Digital self-check code: E6

Self-check information: External feedback failure

  • Self-check code of luminotron: Flicker 7 times/9s
  • Digital self-check code: E7

Self-check information: Overheat protection

  • Self-check code of luminotron: Flicker 8 times/10s
  • Digital self-check code: E8

Self-check information: Water pump failure

  • Self-check code of luminotron: Flicker 9 times/11s
  • Digital self-check code: E9

Troubleshooting Guide

Problem: The motor is heard operating but the air-conditioner dose not work when the indoor unit is powered on

Cause: Since the air-conditioner is powered on, it will come to working condition as long as you press the ON/OFF button of the remote control and the signal is well received.

Problem: The compressor stops running but the indoor fan motor keeps working when it is at cooling mode with the indoor temperature higher than set temperature.

Cause: If you turn off the air-conditioner and restart it immediately, it will return to normal in 3 minutes, after that, the air-conditioner will automatically adjust the indoor fan speed to what you set.

Problem: The compressor works discontinuously at dehumidifying mode.

Cause: The air-conditioner will automatically control the working of the compressor according to the inside temperature

Problem: The air-conditioner dose not work while the LED display is on.

Cause: The TIMER is set with the air-conditioner,it will be in hold on condition. If the TIMER setting is cancelled, the air-conditioner will return to normal working condition.

Problem: The compressor works discontinuously at cooling and dehumidifying mode, and the indoor fan motor slows down.

Cause: The compressor stops internally or the fan motor slows down to prevent the indoor heat exchanger from being frozen.

Aux Air Conditioner Manual PDF

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Amvent Air Conditioner Error Codes

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Amvent Air Conditioner Error Codes

Amvent Ac Maintenance Dubai

Amvent Mini Split AC; In case of error, the display on the indoor unit shown the following error codes:

E1-flashes once -The fault of indoor temperature senser

E2-flashes twice-The fault of indoor pipe temperature senser

E6-flashes 6 times-Malfunction of indoor fan motor

Troubleshooting

Malfunction: The Air Conditioner does not operate

Possible Causes:

  • Ac Power failure/plug pulled out
  • Ac Damaged indoor/outdoor unit Ac fan motor
  • Faulty compressor thermomagnetic circuit breaker
  • Faulty protective device or fuses.
  • Loose connections or plug pulled out
  • It sometimes stops operating to protect the appliance.
  • Voltage higher or lower than the voltage range
  • Active TIMER-ON function
  • Damaged electronic control board (PCB)

Malfunction: Strange odour

Possible Causes: Dirty Ac air filter

Malfunction: Noise of running water

Possible Causes: Back flow of liquid in the refrigerant circulation

Malfunction: A fine mist comes from the air outlet

Possible Causes: This occurs when the air in the room becomes very cold, for example in the COOLING or DEHUMIDIFYING/DRY modes

Malfunction: A strange noise can be heard

Possible Causes: This noise is made by the expansion or contraction of the front panel due to variations in temperature and does not indicate a problem.

Malfunction: Insufficient airflow, either hot or cold

Possible Causes:

  • Unsuitable temperature setting.
  • Obstructed air conditioner intakes and outlets.
  • Dirty air filter.
  • Fan speed set at minimum.
  • Other sources of heat in the room.
  • No refrigerant.

Malfunction: The appliance does not respond to commands

Possible Causes:

  • Remote control is not near enough to indoor unit.
  • The batteries of remote control nearly has no power.
  • Obstacles between remote control and signal receiver in indoor unit.

Malfunction: The display is off

Possible Causes:

  • Active LIGHT function
  • Power failure

Malfunction: Switch off the air condi- tioner immediately and cut off the power supply in the event of

Possible Causes:

  • Strange noises during operation.
  • Faulty electronic control board
  • Faulty fuses or switches.
  • Spraying water or objects inside the appliance.
  • Overheated cables or plugs.
  • Very strong smells coming from the appliance.
Amvent Air Conditioner Manual PDF

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Amana PTAC AC Error Codes

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Amana Air Conditioner Maintenance Dubai

Package Terminal, Air Conditioner/Heat Pump. Amana Diagnostic Codes;

MODES:

Error Code: FP

  • Status: Freeze Protection Engaged. The room temperature measured by the wireless remote thermostat or indoor ambient thermistor active sensor falls below 40°F
  • Suggested Action: No Action required. This setting will disengage when the room temperature rises above 43°F.
  • Display: Y
  • Error Light: N

Error Code: Fd

  • Status: Front Desk switch is closed. All outputs are switched off
  • Suggested Action: Open front desk switch to allow occupant unit operation
  • Display: Y
  • Error Light: N

Error Code: Eo  

  • Status: Un-Configured Service Board – All operation held awaiting configuration
  • Suggested Action: Enter Configuration Menu and set “C3” to “C” for coolers with electric heat or “H” for heat pumps.
  • Display: Y
  • Error Light: Y

Error Code: EH

  • Status: Emergency Hydronic Engaged. The EHH switch is closed. Compressor is switched off.
  • Suggested Action: Open front emergency hydronic switch to allow occupant unit operation.
  • Display: Y
  • Error Light: N

Error Code: LS 

  • Status: Load Shedding Engaged. The LS switch is closed. Compressor and Electric heat is switched off
  • Suggested Action: Open load shedding switch to allow occupant unit operation
  • Display: Y
  • Error Light: N

Error Code: On  

  • Status: Control is configured to respond to a wired thermostat
  • Suggested Action: No action if a wired thermostat is being used. Otherwise, see Configuration Settings.
  • Display: Y
  • Error Light: N

Error Code: oP 

  • Status: Open Door Lockout (DS1 & DS2 open; wireless)
  • Suggested Action: Close Room Door. Unit will not condition space with door open.
  • Display: Y
  • Error Light: Y

Error Code: nP 

  • Status: Window Switch Lockout – (LS & INN open)
  • Suggested Action: Close Room Door or Window. Unit will not condition space with door or window open
  • Display: Y
  • Error Light: Y

Error Code: HP  

  • Status: Heat Sentinel – (WIAT > u3)
  • Suggested Action: No action required. This setting will disengage when the room temperature falls
  • Display: Y
  • Error Light: N

Error Code: Ur 

  • Status: Un-Rented Status (EHH & INN or wireless)
  • Suggested Action: Front Desk needs to set to Rented mode (if applicable)
  • Display: Y
  • Error Light: N

FAILURES;

Error Code: F1

  • Status: Indoor Ambient Thermistor reads outside the range -20°F to 200°F & the wireless thermostat is not communicating to the unit control or Indoor Ambient Thermistor (IAT) without a wireless remote thermostat reads outside the range -20°F to 200°F
  • Suggested Action: Replace black Indoor Ambient Thermistor or Wireless Remote Thermostat
  • Display: Y
  • Error Light: Y

Error Code: F2

  • Status: Wireless Remote Thermostat failure
  • Suggested Action: Replace Wireless Thermostat
  • Display: N
  • Error Light: N

Error Code: F3 

  • Status: Indoor Ambient Thermistor reads outside the range -20°F to 200°F
  • Suggested Action: Replace black Indoor Ambient Thermistor
  • Display: Y
  • Error Light: N

Error Code: F4 

  • Status: Indoor Coil Thermistor either above or below operating tolerances
  • Suggested Action: Replace Red Indoor Coil Thermistor
  • Display: N
  • Error Light: Y

Error Code: F5  

  • Status: Wireless Thermostat failure
  • Suggested Action: Attempt to rebind Wireless Thermostat or Replace Wireless Thermostat
  • Display: N
  • Error Light: Y

Error Code: F6 

  • Status: Indoor Discharge Thermistor either above or below operating tolerances
  • Suggested Action: Replace Yellow Indoor Discharge Thermistor
  • Display: N
  • Error Light: Y

Error Code: Fb 

  • Status: Low Remote Battery Warning
  • Suggested Action: Replace Batteries in Wireless Devices
  • Display: N
  • Error Light: Y

Error Code: H1 

  • Status: High Voltage Protection engaged. Power supply voltage is to high
  • Suggested Action: Check for incoming power at correct voltage
  • Display: Y
  • Error Light: N

Error Code: br

  • Status: Brown Out Protection engaged. Power was lost or voltage is low
  • Suggested Action: Check for incoming power at correct voltage
  • Display: N
  • Error Light: N

AIRFLOW ALERTS;

Error Code: L6   

  • Status: Discharge Air Too Hot
  • Suggested Action: Clean Filter or Remove Air Blockage
  • Display: N
  • Error Light: Y

Error Code: LC  

  • Status: Outdoor Coil Thermistor temperature high
  • Suggested Action: Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning
  • Display: N
  • Error Light: Y

Error Code: C2 

  • Status: Indoor Air Recirculation. Large delta between thermostat and return
  • Suggested Action: Clean Filter or Remove Air Blockage or Close Vent Door or Improve indoor to outdoor seal.
  • Display: N
  • Error Light: Y

Error Code: C5 

  • Status: Outdoor Coil temperature too high for outdoor ambient temperature
  • Suggested Action: Check for Blocked Outdoor Air or Clean Coil
  • Display: N
  • Error Light: Y

REFRIGERATION ALERTS;

Error Code: C1 

  • Status: Indoor Coil is freezing up
  • Suggested Action: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tub
  • Display: N
  • Error Light: Y

Error Code: C3

  • Status: Indoor Coil is freezing up
  • Suggested Action: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube
  • Display: N
  • Error Light: Y

Error Code: C4 

  • Status: Indoor Coil froze up
  • Suggested Action: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube
  • Display: N
  • Error Light: Y

Error Code: C6 

  • Status: Poor Unit Performance
  • Suggested Action: Check for blower motor, compressor, or electric heat operation
  • Display: N
  • Error Light: Y

Error Code: C7 

  • Status: Indoor Freezing Lockout (ICT – IAT > 20) +10 Min
  • Suggested Action: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube
  • Display: N
  • Error Light: Y

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Amana Air Conditioner Error Codes

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Amana Air Conditioner Maintenance Dubai

Amana Air Conditioner Error Codes

Standard and Remote Applications with LED M70 Control Board and R-410A

MODES

CODE: FP

STATUS: Freeze Protection Engaged. The room temperature measured by the wireless remote thermostat or indoor ambient thermistor active sensor falls below 40°F.

SUGGESTED ACTION: No Action required. This setting will disengage when the room temperature rises above  43°F.

CODE: Fd

STATUS: Front Desk switch is closed. All outputs are switched off.

SUGGESTED ACTION: Open front desk switch to allow occupant unit operation.

CODE: Eo

STATUS: Un-Configured Service Board – All operation held awaiting configuration

SUGGESTED ACTION: Enter Configuration Menu and set “C3” to “C” for coolers with electric heat or “H” for heat pumps.

CODE: EH

STATUS: Emergency Hydronic Engaged. The EHH switch is closed. Compressor is switched off.

SUGGESTED ACTION: Open front emergency hydronic switch to allow occupant unit operation.

CODE: LS

STATUS: Load Shedding Engaged. The LS switch is closed. Compressor and Electric heat is switched off.

SUGGESTED ACTION: Open load shedding switch to allow occupant unit operation.

CODE: On

STATUS: Control is configured to respond to a wired thermostat

SUGGESTED ACTION: No action if a wired thermostat is being used.

CODE: oP

STATUS: Open Door Lockout (DS1 & DS2 open; wireless)

SUGGESTED ACTION: Close Room Door. Unit will not condition space with door open.

CODE: nP

STATUS: Window Switch Lockout – (LS & INN open)

SUGGESTED ACTION: Close Room Door or Window. Unit will not condition space with door or window open.

CODE: HP

STATUS: Heat Sentinel – (WIAT > u3)

SUGGESTED ACTION: No action required. This setting will disengage when the room temperature falls.

CODE: Ur

STATUS: Un-Rented Status (EHH & INN or wireless)

SUGGESTED ACTION: Front Desk needs to set to Rented mode (if applicable)

FAILURES

CODE: F1

STATUS:

  • Indoor Ambient Thermistor reads outside the range -20°F to 200°F & the wireless thermostat is not communicating to the unit control or
  • Indoor Ambient Thermistor (IAT) without a wireless remote thermostat reads outside the range -20°F to 200°F.

SUGGESTED ACTION: Replace black Indoor Ambient Thermistor or Wireless Remote Thermostat.

CODE: F2

STATUS: Wireless Remote Thermostat failure

SUGGESTED ACTION:  Replace Wireless Thermostat.

CODE: F3

STATUS: Indoor Ambient Thermistor reads outside the range -20°F to 200°F

SUGGESTED ACTION: Replace black Indoor Ambient Thermistor.

CODE: F4

STATUS: Indoor Coil Thermistor either above or below operating tolerances.

SUGGESTED ACTION: Replace Red Indoor Coil Thermistor .

CODE: F5

STATUS: Wireless Thermostat failure

SUGGESTED ACTION: Attempt to rebind Wireless Thermostat or Replace Wireless Thermostat.

CODE: F6

STATUS: Indoor Discharge Thermistor either above or below operating tolerances.

SUGGESTED ACTION: Replace Yellow Indoor Discharge Thermistor.

CODE: Fb  

STATUS: Low Remote Battery Warning.

SUGGESTED ACTION: Replace Batteries in Wireless Devices.

CODE: H1

STATUS: High Voltage Protection engaged. Power supply voltage is to high.

SUGGESTED ACTION: Check for incoming power at correct voltage.

CODE: br 

STATUS: Brown Out Protection engaged. Power was lost or voltage is low

SUGGESTED ACTION: Check for incoming power at correct voltage.

AIRFLOW ALERTS

CODE: L6

STATUS: Discharge Air Too Hot.

SUGGESTED ACTION:  Clean Filter or Remove Air Blockage.

CODE: LC

STATUS: Outdoor Coil Thermistor temperature high.

SUGGESTED ACTION: Clean Condenser Coils, Check Fan for fault. Code will reset after cleaning

CODE: C2  

STATUS: Indoor Air Recirculation. Large delta between thermostat and return.

SUGGESTED ACTION: Clean Filter or Remove Air Blockage or Close Vent Door or Improve indoor to outdoor seal.

CODE: C5 

STATUS: Outdoor Coil temperature too high for outdoor ambient temperature.

SUGGESTED ACTION: Check for Blocked Outdoor Air or Clean Coil.

REFRIGERATION ALERTS

CODE: C1 

STATUS: Indoor Coil is freezing up

SUGGESTED ACTION: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C3 

STATUS: Indoor Coil is freezing up.

SUGGESTED ACTION: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C4 

STATUS: Indoor Coil froze up.

SUGGESTED ACTION: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

CODE: C6 

STATUS: Poor Unit Performance.

SUGGESTED ACTION: Check for blower motor, compressor, or electric heat operation.

CODE: C7

STATUS: Indoor Freezing Lockout (ICT – IAT > 20) +10 Min

SUGGESTED ACTION: Clean filter, Check for fan and blower operation, Check for Refrigerant loss or Restricted capillary tube.

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