Acson AC Maintenance in Dubai

As seen below, the code indicator changes and notifies you with a long beep.

Ascon AC Spare Parts in Dubai

Ascon Wall Mounted Inverter AC Error Codes:

Error Codes Operation / Faulty Indication
E1 Room air sensor contact loose / short. Check room sensor connection / change room sensor
E2 Indoor coil sensor contact open. Check indoor coil sensor connection / change indoor coil sensor
E3 Outdoor coil sensor contact open. Check outdoor coil sensor connection / change outdoor coil sensor
E4 Compressor overload protection / Indoor / Outdoor coil sensor short. If running ampere highly increase, change the compressor. If not, replace the coil sensor
E5 Gas leak. Check for leakage & repair / Top up refrigerant
E6 Pump fault. Clear the clogging at drain pipe. If pump is not working, change the pump
E7 Outdoor coil sensor exist (MS model). Remove outdoor coil sensor
E8 Hardware error (tact switch pin short). Check for the tact switch pin condition
E9 No Feedback from indoor fan. Check indoor fan motor / fan motor wiring
EE EEPROM defrost

Error Codes for G18 and GS02 – Inverter Y Models

Netware 3C / SLM 9 – Inverter Y Models (Except 5WMY-J/JR)

Error Codes for G18 and GS02 – Inverter Y Models

Error Codes Problem
00 Normal
U0 Insufficient gas
U2 DC voltage out of range
U4 Communication error
U7 Signal transmission error (on outdoor unit PCB)
UA Installation error
UF Communication Error (indoor and outdoor) piping and wiring
UH Anti-freeze function in other room
A1 Indoor PCB error
A3 Water pump error
A5 Antifreeze
A6 Indoor fan motor abnormal
C4 Indoor heat exchanger thermistor short/ open
C9 Indoor room thermistor short/ open
E1 Outdoor PCB error
E3 High pressure protection
E4 Low pressure protection
E5 Compressor motor lock
E6 Compressor start-up error
E7 Outdoor DC fan motor lock
E8 Ac input over current
E9 EXV error
EA 4-way valve error
F3 Discharge pipe overheat
F6 Heat exchanger overheat
H0 Compressor sensor system abnormality
H3 High pressure switch error
H6 Position sensor abnormality
H8 AC current sensor error
H9 Outdoor air thermistor short / open
J1 Pressure sensor error
J3 Compressor discharge pipe thermistor short /open / misplaced
J5 Suction pipe thermistor short/ open
J6 Outdoor heat exchanger
J7 Subcooling heat exchanger thermistor short/ open
J8 Liquid pipe thermistor short/ open
J9 Gas pipe thermistor abnormality
LC Communication error (control PCB and inverter PCB)
L1 Outdoor PCB error
L3 Electrical box temperature rise
L4 Heat sink overheat
L5 IPM error / IGBT error
L9 Stall prevention
P1 Open phase or voltage unbalance
P4 Heat sink thermistor short / open
PJ Capacity setting error

Error Codes for Sequential Controller (SQ LCD) – SB & RT Multi Compressors

Error Codes Faulty Indication
E01 Require manual reset (possible causes)
E02 Compressor 1 high temperature (overload)
E03 Compressor 2 high temperature (overload)
E04 Compressor 3 high temperature (overload)
E05 Compressor 4 high temperature (overload)
E06 Compressor 1 high pressure trip / contact open
E07 Compressor 2 high pressure trip / contact open
E08 Compressor 3 high pressure trip / contact open
E09 Compressor 4 high pressure trip / contact open
E10 Compressor 1 trip/low refrigerant/outdoor abnormal
E11 Compressor 2 trip/low refrigerant/outdoor abnormal
E12 Compressor 3 trip/low refrigerant/outdoor abnormal
E13 Compressor 4 trip/low refrigerant/outdoor abnormal
E14 Room sensor short
E15 Room sensor open
E16 Indoor coil sensor 1 short
E17 Indoor coil sensor 2 short
E18 Indoor coil sensor 3 short
E19 Indoor coil sensor 4 short
E20 Indoor coil sensor 1 open
E21 Indoor coil sensor 2 open
E22 Indoor coil sensor 3 open
E23 Indoor coil sensor 4 open
E24 Outdoor coil sensor 1 short
E25 Outdoor coil sensor 2 short
E26 Outdoor coil sensor 3 short
E27 Outdoor coil sensor 4 short
E28 Outdoor coil sensor 1 open
E29 Outdoor coil sensor 2 open
E30 Outdoor coil sensor 3 open
E31 Outdoor coil sensor 4 open
E32 Compressor 1 de-ice
E33 Compressor 2 de-ice
E34 Compressor 3 de-ice
E35 Compressor 4 de-ice

Error Diagnosis by Wired Controller (MC301)

Error Diagnosis by Wired Controller (MC301)

Error Codes Meaning
F3 Sensor Broken (indoor outlet coil)
F4 Sensor Broken (indoor return air)
F5 Sensor Broken (indoor supply air)
F6 Indoor and controller communication malfunction
F7 Ambient temp exceed the limit
F8 4WV malfunction
F9 Refrigerant leakage
FA Controller storage malfunction
FB Water Pump (indoor water pump)
FC Indoor and outdoor communication malfunction
FE Master and slave communication malfunction
H0 Digital comp overload
H1 Fixed Comp1 overload
H2 Fixed Comp2 overload
H3 Fixed Comp3 overload
H4 High pressure too high
H5 Sensor broken, high pressure
H6 Discharge temp too high
L0 Super heat too low
L1 Low pressure too low
L2 Sensor broken, low pressure
10 System malfunction
11 Sensor broken (slave TH1 discharge temp)
12 Sensor broken (slave TH2 inlet coil 1#)
13 Sensor Broken (slave TH3 mid coil 1#)
14 Sensor broken (slave TH4 inlet coil 2#)
15 Sensor broken (slave TH5 mid coil 2#)
16 Sensor broken (slave TH6 inlet coil 3#)
17 Sensor broken (slave TH7 mid coil 3#)
18 Sensor broken (slave TH8 ambient temp)
19 Sensor broken (slave TH9 outlet coil)
1A Sensor broken (slave TH10 subcool outlet)
1B Sensor broken (slave TH11 subcool suction)
1C Sensor Broken (slave TH12 suction)
1F Emergency run (slave)
20 Outdoor storage (slave)
27 Ambient temp exceed the limit (slave)
28 4WV malfunction (slave)
29 Refrigerant leakage (slave)
30 Digital comp overload (slave)
31 Fixed comp1 overload (slave)
32 Fixed comp2 overload (slave)
33 Fixed comp 3 overload (slave)
34 High pressure too high (slave)
35 Sensor broken, high pressure (slave)
36 Discharge temp too high (slave)
40 Super heat too low (slave)
41 Low pressure too low (slave)
42 Sensor broken, low pressure (slave)

R410A Multi Digital Scroll System Acson MDS-B Series

Error Codes Meaning
EC00 00## indoor unit communication
EC01 01# indoor unit communication failure
…. 02~47# indoor unit communication failure
ER48 Digital Compressor Overload
ER49 Fix 1 Compressor Overload
ER50 Fix 2 Compressor Overload
ER51 Fix 3 Compressor Overload
ER52 Discharge pressure too high
ER53 Suction pressure is too low
ER54 Outdoor unit’s IC error
ER55 System Error
ER56 Discharge temperature is too high
ER58 4 way valve failure
ER59 Ambient temperature is beyond the limit
ER60 Emergency run
ER61 Sub heating is beyond the limit
ER62 Refrigerant released
ER63 Slaver outdoor unit communication failure
ER64 TH1 temperature sensor failure
ER65 TH2 temperature sensor failure
ER66 TH3 temperature sensor failure
ER67 TH4 temperature sensor failure
ER68 TH5 temperature sensor failure
ER69 TH6 temperature sensor failure
ER70 TH7 temperature sensor failure
ER71 TH8 temperature sensor failure
ER72 TH9 temperature sensor failure
ER73 TH10 temperature sensor failure
ER74 TH11 temperature sensor failure
ER75 TH12 temperature sensor failure
ER76 Discharge pressure sensor failure
ER77 Suction pressure sensor failure
EC78 All indoor units Communication Failure

Acson Air Conditioner LED Lights Diagnosis Table

Acson Air Conditioner Troubleshooting

If there is a failure in the Acson Air Conditioner unit, switch the power supply to the unit off immediately. For some simple troubleshooting tips, check the following fault conditions and causes.

Fault: After starting the air conditioner unit, the compressor does not operate for 3 minutes.

Causes / Action: Protection against frequent starting. Wait for 3 to 4 minutes for the compressor to start operating.

Fault: The air conditioner unit does not operate.

Causes / Action:

– Power failure, or the fuse needs to be replaced.
– The power plug is unplugged.
– It is possible that your delay timer has been set incorrectly.
– If the fault persist after all these verifications, please contact Al Kassar AC Spare Parts Trading Company in Dubai.

Fault: The air flow is too low

Causes / Action:

– The air filter is dirty.
– The doors or windows are open.
– The air suction and discharge are clogged.
– The regulated temperature is not high enough

Fault: Air flow has bad odor.

Causes / Action:

– Odors may be caused by cigarettes, smoke particles, perfume etc. which might have stick onto the Air Conditioner coil.

Fault: Condensation on the front air grill of the indoor unit.

Causes / Action:

– This is caused by air humidity after an extended long period of operation.
– The set temperature is too low, increase the temperature setting and operate the unit at high fan speed.

Fault: Water flowing out from the air conditioner unit.

Causes / Action: Switch off Air Conditioner and contact Ac Maintenance Company.

Fault: Air flow sound from the air conditioner unit during operation.

Causes / Action: – Refrigerant fluid flowing into the Air Conditioner evaporator coil

If the fault remains, please call Ac Repair and Servicing Company.

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