Aux AC Error Codes and Troubleshooting

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
E1	Plastic temp sensor is abnormal. The display precedence level: 2
E2	Copper temp sensor is abnormal (outdoor). The display precedence level: 4
E3	Copper temp sensor is abnormal (indoor). The display precedence level: 3
E4	PG motor feedback is abnormal. The display precedence level: 1
E5	Abnormality of outdoor unit
E6	Over-current oprotection
E7	External feedback failure
E8	Overheat protection
E9	Water pump failure
dF	Indicates "dF"or defrosting indicator displays
L1	Failure of coiled pipe sensor
L2	Failure of room temperature sensor
L6	Without feedback of internal fan motor

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

Split type wall mounted air-conditioner Owners Manual

Rittal Air Conditioner Error Codes

System messages are shown on the display screen of the Comfort controller via the displays A1 to A20 and E0. Rittal Air Conditioner Error Codes Error Codes System message Possible cause A1 Enclosure door open Door open or door limit switch incorrectly positioned A2 Internal temperature of enclosure too high Cooling capacity inadequate/unit undersized. Error as a consequence of messages A03 to A17. A3 Filter monitoring Filter mat soiled A4 Ambient temperature too high/too low Ambient temperature outside of admissible operating range (+10°C to +60°C) A5 Icing hazard Operational display in case of icing hazard. A6 PSAH pressure-operated switch Ambient temperature too high A7 Evaporator coil Lack of coolant; sensor in front of or behind condenser defective. A8 Condensate warning Condensate discharge kinked or blocked A9 Condenser fan blocked or defective Blocked or defective A10 Evaporator fan blocked or defective Blocked or defective A11 Compressor Compressor overloaded A12 Condenser Op

Air Conditioner Error Codes

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