April 2, 2020

Carrier AC Error Codes and Troubleshooting

By intakhab Carrier 0 Comments

Carrier AC Error Codes and Troubleshooting

Carrier Error Codes

08 defrost mode 1

0A Defrost Mode 2

F0 low charge or refrigeration system interruption

F3 Outdoor Ambient Temp. Sensor Malfunction

F4 outdoor mid-coil Temp. sensor malfunction

F5 outdoor discharge air Temp. sensor

F7 cooling oil return cycle

E1 System High Pressure Protection

E2 Indoor Freeze Protection

E3 System Low Pressure Protection

E4 Compressor Discharge High Temp. Protection

E6 communication error between indoor and outdoor

E7 mode conflict

E8 System Overload Protection

E9 Cold Blow Protection

dd test mode

Pho pump down mode

P0 IPM left

P5 Compressor Current Protection

P6 communication error between inverter drive and main board

P7 heat sink Temp. sensor malfunction

P8 IPM over Temp. protection

P9 open contactor

PC current sensor malfunction

PD current sensor incorrect wiring protection

PA input current protection

PF inverter board ambient Temp. sensor malfunction

PL low voltage protection

PH high voltage protection

PP abnormal input AC voltage

Pu capacitor charging malfunction

H1 heating oil return cycle

H2 forced defrost

H3 Compressor Overheat Protection

H5 IPM Security

H7 compressor speed reduction

HC PFC Board Security

L9 Compressor High Voltage Protection

Lc compressor start-up failure

LD Compressor Phase Loss Protection

Take compressor standstill

LF Compressor Over-Speed Protection

A5 condenser coil inlet temp sensor sensor malfunction

A7 condenser outlet Temp. sensor malfunction

EE memory card error

N frequency limit for module circuit protection

EU frequency limit for module Temp. protection

F6 frequency limit for overload protection

F8 frequency limit for system circuit protection

F9 frequency limit for module circuit protection

FH frequency limit for freeze protection

Damaging His Majesty’s Compressor Safety

LP indoor and outdoor units are mismatched

U1 Compressor Phase Detection Malfunction

U3 Low DC Bus Voltage

dn communication error between main board and EXV

13 unit one indoor pipe outlet Temp. sensor malfunction

14 unit one indoor pipe inlet Temp. sensor malfunction

15 unit one indoor return air sensor malfunction

16 unit one mode conflict

17 Unit A Freeze Protection

23 unit B indoor pipe outlet Temp. sensor malfunction

24 unit B indoor pipe inlet Temp. sensor malfunction

25 unit B indoor return air sensor malfunction

26 unit B mode conflict

27 Unit B Freeze Protection

33 unit C indoor unit pipe outlet Temp. sensor malfunction

34 Unit C Indoor Unit Pipe Inlet Temp. Sensor Malfunction

35 unit C indoor unit return air sensor malfunction

36 unit C mode conflict

37 Unit C Freeze Protection

41 unit D communication error

42 indoor return air Temp. sensor malfunction

43 Unit D Indoor Pipe Outlet Temp. Sensor Malfunction

44 Unit D Indoor Pipe Inlet Temp. Sensor Malfunction

45 unit d indoor return air Temp. sensor malfunction

46 unit d mode conflict

47 Unit D Freeze Protection

51 unit e communication error

52 Unit E Indoor Pipe Midway Temp. Sensor Malfunction

53 Unit E Indoor Pipe Outlet Temp. Sensor Malfunction

54 Unit E Indoor Pipe Inlet Temp. Sensor Malfunction

55 unit e indoor return air Temp. sensor malfunction

56 unit E mode conflict

57 Unit E Freeze Protection

C5 jumper replacement is missing on indoor board

Refrigerator Is Freezing Everything | What To Check | How To Fix?(Opens in a new browser tab)

Career Performance Series Troubleshooting

Problem: Indoor unit emits bad odor at start-up

Possible reasons:

Air filter dirty
Even after cleaning the filter, the output air has an odor
Solution:

Clean the air filter
Contact your service representative

Problem: When the unit is running, you hear the noise of running water

Possible Cause: This is normal and is the refrigerant flowing through the system.

Solution: no maintenance required

Problem: Indoor unit creates haze when the air conditioner is running

Possible Cause: This is normal cooling and is caused by high humidity and temperature in the room

Solution: No maintenance required. The mist should be stopped as the room is cooled and the humidity removed.

Problem: Room water leakage from indoor unit

Possible cause: Condensed water is overflowing

Solution: Check the indoor condensing drain or call your representative

Carrier Display Series AC Remote Control
Carrier Display Series AC Remote Control

Problem: Wireless remote control does not work

Possible reasons:

The daughters are dead.
The unit needs to be reset
Solution:

See the Battery Replacement section in this manual and replace the battery.
Turn off the power for the indoor unit. Remove the plug from the wall and then reinstall the plug. Restart unit

Problem: Unit / system does not work

Possible reasons:

To protect the unit on immediate restart after a stop, the system controller will delay the unit for 3 minutes before allowing the unit to start back.
The circuit breaker is tripped or the fuse has blown.
power failure
Error codes displayed
Voltage is too low
Solution:

After closing the unit, wait at least 3 minutes before attempting to restart.
Reset the circuit breaker or replace the fuse with the specified replacement fuse.
Resume operation when power is restored.
Call your service representative.
Call your service representative

Problem: cooling is not working properly

Possible reasons:

The filter is blocked by dust.
The temperature is not set properly.
A window or door is open.
The outdoor unit is interrupted.
The fan speed is very low.
Operation mode is in fan instead of cool.
Solution:
Clean the air filter.
Check temperature and reset if necessary.
Close the window or door.
Remove obstruction
Change fan speed selection.
Change the operating mode to cool or reset the unit.