Aux AC Error Codes and Troubleshooting

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.