59 Carrier AC error codes [ +Troubleshooting ] (2024)

Table of Contents
Carrier air conditioner error code DN Carrier air conditioner error code E0 Carrier air conditioner error code E1 Carrier air conditioner error code E2 Carrier air conditioner error code E3 Carrier air conditioner error code E4 Carrier air conditioner error code E5 Carrier air conditioner error code E6 Carrier air conditioner error code E7 Carrier air conditioner error code E8 Carrier air conditioner error code E9 Carrier air conditioner error code EC Carrier air conditioner error code EE Carrier air conditioner error code EN Carrier air conditioner error code EU Carrier air conditioner error code F0 Carrier air conditioner error code F1 Carrier air conditioner error code F2 Carrier air conditioner error code F3 Carrier air conditioner error code F4 Carrier air conditioner error code F5 Carrier air conditioner error code F6 Carrier air conditioner error code F7 Carrier air conditioner error code F8 Carrier air conditioner error code F9 Carrier air conditioner error code FH Carrier air conditioner error code H1 Carrier air conditioner error code H3 Carrier air conditioner error code H5 Carrier air conditioner error code H7 Carrier air conditioner error code HC Carrier air conditioner error code HE Carrier air conditioner error code L9 Carrier air conditioner error code LC Carrier air conditioner error code LD Carrier air conditioner error code LE Carrier air conditioner error code LF Carrier air conditioner error code LP Carrier air conditioner error code P0 Carrier air conditioner error code P1 Carrier air conditioner error code P2 Carrier air conditioner error code P4 Carrier air conditioner error code P5 Carrier air conditioner error code P6 Carrier air conditioner error code P7 Carrier air conditioner error code P8 Carrier air conditioner error code P9 Carrier air conditioner error code PA Carrier air conditioner error code PC Carrier air conditioner error code PD Carrier air conditioner error code PF Carrier air conditioner error code PH Carrier air conditioner error code PL Carrier air conditioner error code PP Carrier air conditioner error code PU Carrier air conditioner error code A5 Carrier air conditioner error code A7 Carrier air conditioner error code U1 Carrier air conditioner error code U3 FAQs

Table of Contents

A few people whatsapp us last week to ask for carrier air conditioning fault codes. Below are almost the full list of carrier air conditioner error codes.

Carrier air conditioner error code DN

Communication error between main board and EXV.

Carrier air conditioner error code E0

Indoor unit EEPROM parameter error.

Timer lamp status: off
Operation lamp blinking: 1 time

Carrier AC error code E0 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (1)

Carrier air conditioner error code E1

Indoor / outdoor units communication error.

Timer lamp status: off
Operation lamp blinking: 2 times

Carrier AC error code E1 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (2)

Carrier air conditioner error code E2

Zero-crossing signal error.

Carrier air conditioner error code E3

Indoor fan speed has been out of control.

Timer lamp status: off
Operation lamp blinking: 4 times

Carrier AC error code E3 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (3)

Carrier air conditioner error code E4

Indoor room temperature sensor T1 open circuit or short circuit.

Timer lamp status: off
Operation lamp blinking: 5 times

Carrier AC error code E4 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (4)

Carrier air conditioner error code E5

Evaporator coil temperature sensor T2 open circuit or short circuit.

Timer lamp status: off
Operation lamp blinking: 6 times

Carrier AC error code E5 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (5)

Carrier air conditioner error code E6

Open or short circuit of room or evaporator coil temperature sensor.

Carrier air conditioner error code E7

Outdoor fan speed has been out of control.

Carrier AC error code E7 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (6)

Carrier air conditioner error code E8

System overload protection.

Carrier air conditioner error code E9

Cold blow protection.

Carrier air conditioner error code EC

Refrigerant leakage detection.

Timer lamp status: off
Operation lamp blinking: 7 times

Carrier air conditioner error code EE

Memory card error.

Carrier air conditioner error code EN

Frequency limitation for module circuit protection.

Carrier air conditioner error code EU

Frequency limitation for module temperature protection.

Carrier air conditioner error code F0

Pump down mode.

Carrier air conditioner error code F1

Outdoor ambient temperature sensor T4 open circuit or short circuit.

Timer lamp status: light
Operation lamp blinking: 2 times

Carrier air conditioner error code F2

Condenser coil temperature sensor T3 open circuit or short circuit.

Timer lamp status: light
Operation lamp blinking: 3 times

Carrier air conditioner error code F3

Compressor discharge temperature sensor T5 open circuit or short circuit.

Timer lamp status: light
Operation lamp blinking: 4 times

Carrier AC error code F3 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (7)

Carrier air conditioner error code F4

Outdoor unit EEPROM parameter error.

Timer lamp status: light
Operation lamp blinking: 5 times

Carrier air conditioner error code F5

Outdoor fan speed has been out of control.

Timer lamp status: light
Operation lamp blinking: 6 times

Carrier air conditioner error code F6

Frequency limitation for overload protection.

Carrier air conditioner error code F7

Cooling oil return cycle.

Carrier air conditioner error code F8

Frequency limitation for system circuit protection.

Carrier air conditioner error code F9

Frequency limitation for module circuit protection.

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Carrier air conditioner error code FH

Frequency limitation for freeze protection.

Carrier air conditioner error code H1

Defrost or heating oil return cycle.

Carrier air conditioner error code H3

Compressor overheat protection.

Carrier air conditioner error code H5

IPM Protection.

Main checking point:

  • Is the input voltage of the unit within the acceptable range?
  • Is the compressor connected correctly?
  • Is the compressor winding resistance correct?
  • Are the heat exchangers clean / unblocked?
  • Is the refrigerant charge correct?

Carrier AC error code H5 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (8)

Carrier air conditioner error code H7

Compressor speed reduction.

Carrier air conditioner error code HC

PFC protection malfunction.

Main checking points:

  • Is the power supply correct?
  • Is the reactor broken or miss-wired?

Carrier AC error code HC troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (9)

Carrier air conditioner error code HE

Compressor demagnetizing protection.

Carrier air conditioner error code L9

Compressor high voltage protection.

Carrier air conditioner error code LC

Compressor start-up failure.

Main checking points:

  • Is the stop duration of the compressor is correct?
  • Is the compressor connected properly?
  • Is the compressor broken?
  • Is the refrigerant charge amount too great?

Carrier AC error code LC troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (10)

Carrier air conditioner error code LD

Compressor phase loss protection.

Carrier air conditioner error code LE

Compressor stalling.

Carrier air conditioner error code LF

Compressor over-speed protection.

Carrier air conditioner error code LP

Indoor and outdoor units mismatch.

Carrier air conditioner error code P0

IBM malfunction or IGBT over-strong current protection.

Timer lamp status: flash
Operation lamp blinking: 1 time

Carrier AC error code P0 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (11)

Carrier air conditioner error code P1

Over voltage or too low voltage protection.

Timer lamp status: flash
Operation lamp blinking: 2 times

Carrier AC error code P1 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (12)

Carrier air conditioner error code P2

High temperature protection of compressor top diagnosis and solution.

Timer lamp status: flash
Operation lamp blinking: 3 times

Carrier AC error code P2 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (13)

Carrier air conditioner error code P4

Inverter compressor drive error.

Timer lamp status: flash
Operation lamp blinking: 5 times

Carrier AC error code P4 troubleshooting procedure:

59 Carrier AC error codes [ +Troubleshooting ] (14)

Carrier air conditioner error code P5

Compressor current protection.

Carrier air conditioner error code P6

Communication error between the inverter drive and main board.

Carrier air conditioner error code P7

Heat sink temperature sensor malfunction.

Carrier air conditioner error code P8

IPM over temperature protection.

Carrier air conditioner error code P9

Open contactor.

Carrier air conditioner error code PA

Input current protection.

Carrier air conditioner error code PC

Current sensor malfunction.

Carrier air conditioner error code PD

Current sensor miss-wiring protection.

Carrier air conditioner error code PF

Inverter board ambient temperature sensor malfunction.

Carrier air conditioner error code PH

High voltage protection.

Carrier air conditioner error code PL

Low voltage protection.

Carrier air conditioner error code PP

Abnormal input AC voltage.

Carrier air conditioner error code PU

Capacitor charging malfunction.

Carrier air conditioner error code A5

Condenser coil inlet temp sensor malfunction.

Carrier air conditioner error code A7

Condenser outlet temperature sensor malfunction.

Carrier air conditioner error code U1

Compressor phase detection malfunction.

Carrier air conditioner error code U3

Low DC bus voltage.

How to remove Carrier air conditioner outdoor unit?

Total Time: 35 minutes

  1. Remove top cover and wiring cover

    59 Carrier AC error codes [ +Troubleshooting ] (15)

    Before disassembly, remove screws retaining the wiring cover, lift the cover upward to remove it. Remove screws retaining the top cover, lift the top cover upward to remove it.

  2. Remove front grille and front panel

    59 Carrier AC error codes [ +Troubleshooting ] (16)

    Remove the screws retaining the front grille to the front panel. Remove the front grille. Then remove the screws retaining the panel, lift it upward to loosen the clasp on the right side, rotate it to the left and then remove the front panel.

  3. Remove right and left side panels

    59 Carrier AC error codes [ +Troubleshooting ] (17)

    Remove the screws retaining the right side panel to the chassis, the valve support and the electric box, then remove the right side panel. Then remove the screws retaining the left side panel to the chassis, then remove the left side panel.

  4. Remove the fan blade

    59 Carrier AC error codes [ +Troubleshooting ] (18)

    Remove the nut retaining the blade to the motor shaft, then remove the fan blade.

    Remove the four (4) screws retaining the motor; disconnect the motor wiring, then remove the motor.

    Remove the two (2) screws retaining the motor support; then lift the motor support upwards to remove it

  5. Remove control box assembly

    59 Carrier AC error codes [ +Troubleshooting ] (19)

    Remove the screws retaining the control box sub-assembly; loosen the wire bundle; remove the wiring terminals and then lift the control box upwards to remove it.

  6. Remove sound shield

    59 Carrier AC error codes [ +Troubleshooting ] (20)

    Carefully remove the sound shield from around the compressor.

  7. Remove reactor

    59 Carrier AC error codes [ +Troubleshooting ] (21)

    Remove screws holding the reactor to the compressor partition; then remove the reactor.

  8. Remove 4-way valve

    59 Carrier AC error codes [ +Troubleshooting ] (22)

    Reclaim system refrigerant charge.

    Cut all lines connected to 4-way valve; disconnect solenoid coil wiring and remove 4-way valve from unit.

  9. Remove electronic expansion valves and shut-off valves

    59 Carrier AC error codes [ +Troubleshooting ] (23)

    Remove the solenoid coils from the electronic expansion vlaves. Cut all lines connecting the valves to the system and remove the valves.

  10. Remove the service valve support assembly

    59 Carrier AC error codes [ +Troubleshooting ] (24)

    Remove the screws retaining the valve support to the chassis; then remove the valve support assembly.

  11. Remove compressor partition

    59 Carrier AC error codes [ +Troubleshooting ] (25)

    Remove screws retaining the partition and then remove the partition.

  12. Remove compressor

    59 Carrier AC error codes [ +Troubleshooting ] (26)

    Remove three (3) nuts from compressor mounting bolts, then lift compressor from base pan.

  13. Remove condenser

    59 Carrier AC error codes [ +Troubleshooting ] (27)

    Remove the screws retaining the support and condenser assembly. Then remove the support.

    Remove the condenser from the base pan.

How to disassembly and assembly Carrier air conditioner compressor?

Make sure that there is no refrigerant in pipe system and the power supply is cut off before disassembling the compressor.

1. Disconnect the power cord

59 Carrier AC error codes [ +Troubleshooting ] (28)

  • Remove the fixed screws on the power cord by using a screwdriver.
  • Draw out the power cord.

Note: Please note the color of each power cord and also the corresponding terminal number when removing the power cord in case of misconnection.

2. Disassemble the pipeline connected with compressor

59 Carrier AC error codes [ +Troubleshooting ] (29)

Disconnect the pipeline connected with compressor.

3. Remove the bad compressor

59 Carrier AC error codes [ +Troubleshooting ] (30)

  • Remove the bolts retaining the compressor.
  • Remove the bad compressor from the bottom plate.

4. Place the new compressor on the bottom plate and connect the suction inlet and discharge outlet with the pipe system

59 Carrier AC error codes [ +Troubleshooting ] (31)

  • Place the compressor on the bottom plate.
  • Tighten the nuts.

How to disassembly and assembly Carrier air conditioner 4-way valve?

1. Remove the 4-way valve coil

59 Carrier AC error codes [ +Troubleshooting ] (32)

  • Remove the screws on the fixed coil by using a screwdriver.
  • Remove the 4-way valve coil.

2. Remove 4-way valve

59 Carrier AC error codes [ +Troubleshooting ] (33)

Reclaim all refrigerant charge in system. Cut all line connections to 4-way valve and remove from unit.

3. Replace the 4-way valve

59 Carrier AC error codes [ +Troubleshooting ] (34)

  • Place the new 4-way valve in the right place.
  • Reweld the new 4-way valve with the pipeline

4. Install the 4-way valve coil

  • Replace the 4-way valve coil in place
  • Tighten the screws with a screwdriver.

How to disassembly and assembly Carrier air conditioner electronic expansion valve?

1. Remove the electronic expansion valve coil

Remove the electronic expansion valve coil by rotating it until the lock is unfixed.

2. Remove the electronic expansion valve

59 Carrier AC error codes [ +Troubleshooting ] (35)

Cut all lines to the electronic expansion valves then remove.

3. Replace the electronic expansion valve

59 Carrier AC error codes [ +Troubleshooting ] (36)

Place the new electronic expansion valve in the right place.

4. Reconnect the electronic expansion valve with the pipeline

59 Carrier AC error codes [ +Troubleshooting ] (37)

Reconnect the electronic expansion valve with the pipeline by welding.

5. Install the electronic expansion valve coil

Set the electronic expansion valve coil on the valve body and adjust the lock to the right place.

How to disassembly and assembly Carrier air conditioner vapor liquid separator?

1. Disconnect the liquid separator and the connected pipeline

59 Carrier AC error codes [ +Troubleshooting ] (38)

Disconnect the liquid separator and the connected pipeline.

2. Remove the liquid separator

59 Carrier AC error codes [ +Troubleshooting ] (39)

  • Remove the bolt retaining the liquid separator
  • Remove the liquid separator from the middle baffle.

3. Fix the new liquid separator and connect it with the pipeline

59 Carrier AC error codes [ +Troubleshooting ] (40)

  • Place the new liquid separator on the middle baffle.
  • Tighten the bolt and reconnect the new liquid separator with the pipeline by welding.

If still need a helping hand in air conditioning repair, please feel free to contact us.

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59 Carrier AC error codes [ +Troubleshooting ] (2024)

FAQs

What is F5 error code in carrier inverter AC? ›

CODE: F4. RESULT: Outdoor unit EEPROM parameter error. CODE: F5. RESULT: Outdoor fan speed has been out of control.

See More ›
What is the error code in carrier AC? ›

Indoor Error Codes
CodePossible Cause
E1Indoor / outdoor units communication error
E3Indoor fan speed has been out of control
E4Indoor room temperature sensor T1 open circuit or short circuit
E5Evaporator coil temperature sensor T2 open circuit or short circuit
13 more rows

View Details ›
How do I fix error code F5? ›

You can try to reset your Maytag washer. Unplugging it from its power source for 10 minutes should do the trick. This will generally clear the code and allow you to carry on, especially if you have cleared all the obstructions out of the lid lock mechanism.

Read The Full Story ›
How do you read code error messages? ›

How to read an error message
  1. Find the Key Words.
  2. Look for breadcrumbs.
  3. Trace a line back to the problem.
  4. Clear out sample code.
  5. Keep asking questions.
Apr 3, 2017

Learn More ›
What are error codes in AC? ›

Air-Conditioner Error Code List
Error CodeContent of Diagnosis
1-4Heat sink thermistor short circuit error
2-0Compressor high temperature error
2-1Compressor discharge overheat
2-2Outdoor unit heat exchanger overheat
72 more rows

See More ›
What is E5 error in carrier AC? ›

The E5 error code signals that the unit has entered over current protection mode. This happens when the line voltage to the unit is too high or when the low supply voltage is unstable.Is the unit supply power connected to 240Vac or 115vac?

Discover More Details ›
What is error 5 in Carrier AC? ›

CODE: E5. RESULT: Evaporator coil temperature sensor T2 open circuit or short circuit.

Discover More Details ›
What is a carrier error? ›

Carrier Error dispositions or status occur when the dialer reaches a number that has been disconnected, is an invalid number, or there is an issue with the carrier route at that time.

Tell Me More ›
Where is the AC reset button located? ›

Look for it first around on the exterior of your machine, especially along the bottom edge near the ground. An AC's reset button is typically red and visible, so it should be easy to spot. If you don't see a reset button on the outside, it could be located inside the unit behind the service panel.

See Details ›
How to do a hard reset on AC? ›

It's a small, red button usually located on or around the unit. The button should have a clear 'reset' label. Once you find the button, press it for around three seconds and observe the AC. Check whether the AC kicks on immediately and if it doesn't, press the button again for another three seconds.

See More ›

How do I clear my trouble code? ›

Plug an OBD-II scanner into your vehicle's OBD port and reset it to clear the check engine light. Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.

Read The Full Story ›
What is the F5 error code for an inverter? ›

The blunder code F5 on an LG double inverter climate control system ordinarily demonstrates a correspondence mistake between the indoor and open-air units. This correspondence blunder can be brought about by different elements.

Get More Info Here ›
What is error code 05 on inverter? ›

Error code 05: output short-circuit or over temperature detected in inverter inner components. Trouble shooting： Step 1. Disconnect the load, grid input and solar input Just connect battery and turn on the inverter after 5 minutes.

Know More ›
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