Pioneer Air Conditioner AC Mini Split ERROR CODES And Troubleshooting Flowcharts





Pioneer AC showing error code? Error codes display on either the indoor or outdoor unit. Certain error codes mean different things. Knowing what each error code means can assist you in troubleshooting and fixing your Pioneer AC unit. Below you will find Pioneer air conditioner error codes for both the indoor and outdoor units for 9000 btu and above. We have included flowcharts for troubleshooting what part needs to be replaced, repaired, or cleaned. For any issues not covered on this page, here is a Pioneer AC Troubleshooting PDF.

Pioneer Air Conditioner Ductless Wall Mount Mini Split System Heat Pump - Error Codes And TroubleshootingPioneer Air Conditioner Ductless Wall Mount Mini Split System Heat Pump
Error Codes And Troubleshooting

 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Indoor Unit ERROR CODE chartPioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System
Indoor Unit ERROR CODE chart







 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Names of Indoor and Outdoor PartsPioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System
Names of Indoor and Outdoor Parts

Pioneer Air Conditioner Ductless Wall Mount
Mini Split Indoor Unit Error Display Codes

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = dF
What Does The AC Error Code Mean? = In defrosting mode the LED displays dF.
The outdoor unit is in defrost mode, heat pumps will initiate defrost upon demand. It’s a normal operation code.

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E0
What Does The AC Error Code Mean? = Indoor unit EEPROM parameter error

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - E0 or F4 error code troubleshooting

 

 







 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E1
What Does The AC Error Code Mean? = Indoor / outdoor units communication error

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - E1 error code troubleshooting

 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E2
What Does The AC Error Code Mean? = Zero-crossing signal detection error







Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - E2 error code troubleshooting

 

 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E3
What Does The AC Error Code Mean? = Indoor fan speed has been out of control

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - E3 error code troubleshooting

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E4
Indoor room temperature sensor T1 open circuit or short circuit







 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = E5
Evaporator coil temperature sensor T2 open circuit or short circuit

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - E5 error code troubleshooting

 

 

 

 







Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = EC
Refrigerant leakage detection

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - EC error code troubleshooting

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = F1
Outdoor temperature sensor T4 open circuit or short circuit

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = F2
Condenser coil temperature sensor T3 open circuit or short circuit

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = F3
Compressor discharge temperature sensor T5 open circuit or short circuit

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = F4
Outdoor unit EEPROM parameter error

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = P0
IPM malfunction or IGBT over-strong current protection







Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - P0 error code troubleshooting

 

 

 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = P1
Over voltage or Under voltage protection

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - P1 error code troubleshooting







 

 

 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = P2
High temperature protection of compressor top

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - P2 error code troubleshooting

 







 

 

Pioneer AC Ductless Wall Mount Mini Split Indoor Unit Error Code = P4
Inverter compressor drive error

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System -P4 error code troubleshooting

Pioneer AC Defrost:
Defrosting of the outdoor heat exchange is controlled by the microprocessor from detection from the indoor pipe temperature sensor. Defrost control type is according to the JC on the PCB whether it is connected. According to the condition, enter the defrosting operation, the first defrosting operation time is 8 minutes; after defrosting operation for one cycle, then regulate the defrosting operation time if needed. After the compressor cumulative operation time exceeds 120 minutes and the temperature of the IPT is less than 95F for 2 minutes… When the defrosting operation time on this condition exceeds 8 minutes, it will terminate. After the compressor operates continuously for 20 minutes and the IPT is less than 73F or from the last time of defrosting operation is 50 minutes or more interval. When the defrosting operation time on this condition exceeds 10 minutes, it will terminate. When the JC isn’t connected on the PCB = When the conditions of a) or b) is satisfied, the defrosting operation starts. Under the heating operation, the compressor cumulative operation time exceeds 50 minutes and the temperature of the outdoor pipe temperature sensor reads lower than 14F. Under the heating operation, the compressor cumulative operation time exceeds 50 minutes, if the indoor pipe temperature sensor reads lower than 104F continuously for 2 minutes.

Pioneer AC Defrost terminating conditions
The outdoor defrost sensor reads 68F the defrosting operation will terminate.
The defrosting time exceeds 10 minutes the defrosting operation will terminate.

Read here for more about Pioneer AC defrost







Model Names of Pioneer AC Indoor/Outdoor units

(NOTE: THESE MODEL NUMBER ARE FOR THE ERROR CODES ABOVE)
Cooling Only Model Numbers (Indoor + Outdoor Units):

WAE009AMFI15RL (WE009AMFI15CLD + AN009AMFI15RPD)
WAE012AMFI15RL (WE012AMFI15CLD + AN012AMFI15RPD)
WAE012GMFI15RL (WE012GMFI15CLD + AN012GMFI15RP)
WAE018GMFI15RL (WE018GMFI15CLD + AN018GMFI15RPD)
WAE024GMFI15RL (WE024GMFI15CLD + AN024GMFI15RPD)

Heat Pump Model Numbers (Indoor + Outdoor Units):
WYE009AMFI15RL (WE009AMFI15HLD + YN009AMFI15RPD)
WYE009GMFI15RL (WE009GMFI15HLD + YN009GMFI15RPD)
WYE012AMFI15RL (WE012AMFI15HLD + YN012AMFI15RPD)
WYE012GMFI15RL (WE012GMFI15HLD + YN012GMFI15RPD)
WYE018GMFI15RL (WE018GMFI15HLD + YN018GMFI15RPD)
WYE024GMFI15RL (WE024GMFI15HLD + YN024GMFI15RPD)

Pioneer Air Conditioner Ductless Wall Mount Mini Split System Heat Pump - Outdoor Unit Error Display Codes and LED LightsPioneer Air Conditioner Ductless Wall Mount Mini Split System Heat Pump
Outdoor Unit Error Display Codes and LED Lights

 

Pioneer Air Conditioner Ductless Wall Mount Mini Split System Heat Pump - Outdoor Unit Error Display

 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Outdoor Wiring Diagram







 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Indoor Wiring Diagram

 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Cooling Models Refrigerant Cycle Diagram

 

Pioneer Air Conditioner Inverter Ductless Wall Mount Mini Split System - Heat Pump Models Cycle Diagram

 







 

Pioneer Split System AC

PDF User Manual/Installation Manual for Pioneer WAE WYE AC Ductless Wall Mount Mini Split Systems

PIONEER AC WB, CB, RB, UB, FB SERIES INDOOR UNITS FOR MULTI SPLIT SYSTEM AIR CONDITIONER AND HEAT PUMP SERVICE MANUAL

Service Manual for Pioneer A/C Model Numbers: Pioneer AC YN018GMFI16M2D, YN027GMFI16M3D, YN036GMFI16M4D Manuals

Pioneer mini split tech support = 1-877-757-8284

 

Pioneer Air Conditioner Original Remote Control Button DescriptionPioneer Air Conditioner Original Remote Control Button Description

 


Universal Pioneer mini split remote control
Universal Pioneer mini split remote control
Works with PIONEER AC

 

Decorative PVC Line Cover Kit for Mini Split Air Conditioners and Heat PumpsDecorative PVC Line Cover Kit for Mini Split Air Conditioners and Heat Pumps

Need help? Ask a question below and we will assist you with your Pioneer AC.


More "Do It Yourself" Tips, Tricks, Ideas, Repair:


















{ 1 comment… read it below or add one }

1 Ann Hurst July 6, 2017 at 4:23 am

We have a Pioneer inverter indoor model WS009GMF122HLD. Several times, it’s displayed the E1 error code, but it functions again after the power has been switched off for a few seconds and then back on. Today, it stopped responding to the remote control. No error message was displayed, but we were unable to turn the unit off or change the mode or temperature setting. We have other units, and the remote worked with them, so we believe the problem is with the inverter. Can you help? Thank you!

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