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Sanyo Aircon Operation Light Blinking

Introduction

If your Sanyo aircon’s operation light is blinking, chances are, you had your Aircon for more than 12 years at least. This is because Sanyo Aircon has already stopped selling in Singapore for more than 12 years. That is why, you don’t see many technicians who are capable of repairing Sanyo air conditioning units. So why is your Sanyo aircon light blinking? In this article, we will attempt to explain the different types of Sanyo air conditioners, as well as some examples of Sanyo aircon error codes. We will also provide an estimated cost of repair for the ‘Sanyo operation light blinking’ issue.

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Sanyo Aircon Operation Light Blinking, What Does It Mean?

If your Sanyo Aircon operation light is blinking, chances are, the Sanyo Aircon is having an error code. This could mean that certain parts of your Sanyo Aircon system are malfunctioning. It could also mean that there may be a refrigerant gas shortage in your Sanyo Aircon system. Whichever that is. It means that your Sanyo Aircon has to be checked. For Sanyo Aircon, it is best if you get someone experienced in repairing non inverter Aircon units to check on it. We will elaborate further in the next paragraph.

What types of Sanyo Aircon are there?

As mentioned earlier, if your Sanyo aircon operation light is blinking. It is best if you get someone experienced in repairing non inverter Aircon to check. This is because most of the Sanyo Aircon are non inverter model. In fact, only the last batch of Sanyo Aircon sold in Singapore is an inverter model. That means, of the dozen batches of Sanyo air conditioning units released, only one series uses inverter technology.

How do you identify if it’s an inverter or non inverter Aircon model? It’s very simple, check the model number of your Aircon. If the model number contains KRV, it likely means that it is an inverter Aircon unit. Also, double check it’s gas type. If the gas type of Sanyo Aircon is R22, it is likely an inverter Aircon unit. However, if the gas type is R410 and there is Sanyo aircon operation light blinking. It should be a Sanyo Aircon inverter unit and there should have an error code in the Sanyo System

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Sanyo Aircon repair and error code

Complete List of Sanyo Aircon Error Codes

Error Codes Related to Addressing and Communication Problems

Error Code Description
E01 Remote control detecting error from indoor unit. Address not set or auto-address failed. Check interconnecting wiring and re-address the system.
E02 Remote detecting error from indoor unit.
E03 Indoor unit detecting error from remote.
E04 Indoor unit seeing error from outdoor unit. Number of connected indoor units is less than the quantity set. Turn off all units, wait 5 minutes, then power up.
E05 Indoor unit detecting error from outdoor unit – error in sending comms signal.
E06 Outdoor unit detecting error from indoor unit – error in receiving comms signal.
E07 Outdoor unit detecting error from indoor unit – error in sending comms signal.
E08 Incorrect setting: indoor/controller address duplicated.
E09 Incorrect setting: remote address duplicated or IR wireless controller not disabled.
E10 Indoor unit detecting error from ‘option’ plug – error in sending comms signal.
E11 Indoor unit detecting error from ‘option’ plug – error in receiving comms signal.
E12 Auto addressing failed – auto address connector CN100 shorted during auto addressing.
E13 Indoor unit failed to send signal to remote controller.
E14 Setting failure – duplication of master indoor units.
E15 Auto addressing failed – number of indoor units connected is less than number set.
E16 Auto addressing failed – number of indoor units connected is more than number set.
E17 Group control wiring error – main indoor unit not sending signal to sub indoor units.
E18 Group control wiring error – main indoor unit not receiving signal from sub indoor units.
E20 Auto addressing failed – no indoor units connected.
E24 Auto addressing failed – error on sub outdoor unit.
E25 Auto addressing failed – error in outdoor unit address setting.
E26 Auto addressing failed – quantity of main and sub outdoor units does not match the number set on main outdoor unit PCB.
E29 Auto addressing failed – sub outdoor unit not receiving comms from main outdoor unit.
E31 Communication failure with MDC. Does E31 remain after power is reinstated? If yes, replace PCB and power PCB.

Error Codes Related to Senior Faults

Error Code Description
F01 Indoor Heat Exchanger inlet temp sensor failure (E1).
F02 Indoor Heat Exchanger freeze temp sensor failure (E2).
F03 Indoor Heat Exchanger outlet temp sensor failure (E3).
F04 Outdoor Discharge temp sensor failure (TD) or (DISCH1).
F05 Outdoor Discharge temp sensor failure (DISCH2).
F06 Outdoor Heat Exchanger temp sensor failure (C1) or (EXG1).
F07 Outdoor Heat Exchanger temp sensor failure (C2) or (EXL1).
F08 Outdoor Air temp sensor failure (TO).
F10 Indoor inlet temp sensor failure.
F11 Indoor outlet temp sensor failure.
F12 Outdoor Intake sensor failure (TS).
F13 GHP – Cooling water temperature sensor failure.
F16 Outdoor High pressure sensor failure.
F17 GHP – Cooling water temperature sensor fault.
F18 GHP – Exhaust gas temperature sensor fault.
F20 GHP Clutch coil temperature fault.
F23 Outdoor Heat Exchanger temp sensor failure (EXG2).
F24 Outdoor Heat Exchanger temp sensor failure (EXL2).
F29 Indoor EEPROM error.
F30 Clock Function (RTC) fault.
F31 Outdoor EEPROM error.

Error Codes Related to Compressor Faults

Error Code Description
H01 Compressor Fault, Over current (Comp1).
H02 Compressor Fault, Locked rotor current detected (Comp1).
H03 Compressor Fault, No current detected (Comp1).
H05 Compressor Fault, Discharge temperature not detected (Comp1).
H06 Compressor Fault, Low Pressure trip.
H07 Compressor Fault, Low oil level.
H08 Compressor Fault, Oil sensor fault (Comp1).
H11 Compressor Fault, Over current (Comp2).
H12 Compressor Fault, Locked rotor current detected (Comp2).
H13 Compressor Fault, No current detected (Comp2).
H15 Compressor Fault, Discharge temperature not detected (Comp2).
H27 Compressor Fault, Oil sensor fault (Comp2).
H28 Compressor Fault, Oil sensor (connection failure).
H31 Compressor Fault, IPM trip (current or temperature overload in inverter module).

Error Codes Related to Incorrect Settings

Error Code Description
L01 Setting Error, Indoor unit group setting error.
L02 Setting Error, Indoor/outdoor unit type/model mismatched.
L03 Duplication of main indoor unit address in group control.
L04 Duplication of outdoor unit system address.
L05 Two or more controllers set as ‘priority’ in one system – shown on controllers set as ‘priority’.
L06 Two or more controllers set as ‘priority’ in one system – shown on controllers not set as ‘priority’.
L07 Group wiring connected on an individual indoor unit.
L08 Indoor unit address/group not set.
L09 Indoor unit capacity code not set.
L10 Outdoor unit capacity code not set.
L11 Group control wiring incorrect.
L13 Indoor unit type setting error, capacity mismatch.
L15 Indoor unit pairing fault.
L16 Water heat exchanger unit setting failure.
L17 Mismatch of outdoor unit with different refrigerant type.
L18 4-way valve failure.
L19 Water heat exchanger unit duplicated address.
L21 Gas type setup failure.

Error Codes Related to Indoor Unit Faults

Error Code Description
P01 Indoor unit fault, Fan motor thermal overload.
P02 Outdoor unit fault, Compressor motor thermal overload, over or under voltage.
P03 Outdoor unit fault, Compressor discharge temperature too high (Comp1) over 111°C. Possible causes: low refrigerant gas, expansion valve issue, or pipework damage.
P04 Outdoor unit fault, High pressure trip.
P05 Outdoor unit fault, Open phase on power supply. Check power on each phase, inverter PCB, and control PCB.
P09 Indoor unit fault, Ceiling panel incorrectly wired.
P10 Indoor unit fault, Condensate float switch opened (indicating water buildup).
P11 GHP – Water heat exchanger low temp (frost protection) fault.
P12 Indoor unit fault, Fan DC motor fault.
P14 Input from leak detector (if fitted).
P15 Refrigerant loss detected—high discharge temp, EEV wide open, and low compressor current draw.
P16 Outdoor unit fault, Open phase on compressor power supply.
P17 Outdoor unit fault, Compressor discharge temperature too high (Comp2) over 111°C. Possible causes: low refrigerant, expansion valve, or pipework damage.
P18 Outdoor unit fault, By-pass valve failure.
P19 Outdoor unit fault, 4-way valve failure. Check wiring, coil, PCB output, and valve operation.
P20 Refrigerant fault—high temp/pressure, heat exchanger temp high (C2), cooling overload, or sensor fault.
P22 Outdoor unit fan motor fault—fan blade jammed, check connections, motor resistance (30–40Ω), or possible PCB fault.
P26 Outdoor unit fault, Compressor overcurrent. Check winding resistance or inverter failure (HIC+/- to UVW: 200–300kΩ or more).
P29 Outdoor unit fault, Inverter circuit fault—Motor-current Detection Circuit (MDC) fault. Check compressor windings, sensors C1 and TS.
P30 Indoor unit fault, System controller detected fault on sub indoor unit.
P31 Simultaneous operation multi-control fault, Group controller fault.

GHP Fault Code Description

Fault Code Description
A01 GHP – Engine oil pressure fault
A02 GHP – Engine oil level fault
A03 GHP – Engine over speed
A04 GHP – Engine under speed
A05 GHP – Ignition power supply failure
A06 GHP – Engine start up failure
A07 GHP – Fuel gas valve failure
A08 GHP – Engine stalled
A09 GHP – Engine overload
A10 GHP – High exhaust gas temp
A11 GHP – Engine oil level failure
A12 GHP – Throttle actuator fault
A13 GHP – Fuel gas valve adjustment failure
A14 GHP – Engine oil pressure sensor fault
A15 GHP – Starter power output short circuit
A16 GHP – Starter motor locked
A17 GHP – Starter current (CT) coil failed
A19 GHP – Wax Valve (3 Way) fault
A20 GHP – Cooling water temp high
A21 GHP – Cooling water level fault
A22 GHP – Cooling water pump fault
A23 GHP – Engine crank angle sensor failure
A24 GHP – Engine cam angle sensor failure
A25 GHP – Clutch fault
A26 GHP – Misfire
A27 GHP – Catalyst temperature fault
A28 GHP – Generator fault
A29 GHP – Converter fault
A30 GHP – Fuel gas pressure low

Sanyo Aircon Repair For Inverter Unit

If your Sanyo aircon is an inverter unit and the Sanyo operation light is blinking, it means that there is an error code reflected in the system. All you will need to do is to access the outdoor condenser unit and take a look at the Sanyo Aircon error code. There will be a table of diagram located inside the panel of the Sanyo condenser unit. You can therefore see what error code it contains by matching with the Sanyo aircon operation blinking light inside the Sanyo Aircon PCB board beside the compressor.

Sanyo Aircon Error Code For Non Inverter Unit.

If the Sanyo aircon at home is a non inverter unit, then the Sanyo aircon operation light blinking probably does not reflect any error code. In this instance of Sanyo Aircon repair, your aircon technician will probably have to troubleshoot this from scratch. As mentioned in the earlier paragraphs, most Sanyo air conditioners are non inverter units. Hence, we recommend that you find an aircon technician who is comfortable with repairing Sanyo aircon. Or rather, if they have the skills to repair non inverter Aircon. That should suffice as well.

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How Many Sanyo Aircon Operation Light Blinking?

This can help you simplify the troubleshooting process. Regardless of whether your Sanyo Aircon is an inverter or non inverter Aircon unit. If it is a multi split unit, and only one of the Aircon unit has light blinking. It would very likely mean that it is the indoor unit that is experiencing error. So you will likely have to find Aircon spare parts belonging to the fancoil unit.
However, if all the Sanyo fancoil unit is blinking, then it could be the the parts in the Sanyo compressor that is malfunctioning. How much does that matter for Sanyo aircon repair? Sanyo Aircon fancoil parts are a lot cheaper that the parts in Sanyo Aircon compressor. Or rather, for a proper term, Sanyo Aircon condenser unit.

Sanyo Aircon Spare Parts Singapore

It is not just the cost of repairs that matters here. Sanyo Aircon does not exist in Singapore anymore. Hence, you will not be able to find Sanyo Aircon spare parts here. Or rather, you won’t be able to find brand new Sanyo Aircon spare parts. Hence, you may have to look for Aircon spare parts company. Thankfully, here at Silverback Aircon, we have an extensive collection of Sanyo Aircon spare parts. As we know that there are still demand for Sanyo Aircon repair. We attempt to keep and refurbished as many Sanyo Aircon spare parts as possible. So that we are able to repair these Sanyo Aircon should the customer choose to do so.

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Sanyo Aircon Service Center

As mentioned earlier. Sanyo Aircon is no longer operating in Singapore. Hence if your Sanyo Aircon light is blinking, You will not be able to get your Sanyo Aircon spare parts in a sanyo servicer center in Singapore. As it simply does not exist anymore.

Conclusion

If your Sanyo Aircon operation light is blinking, you may consider to repair your Aircon. However, please make sure that the Aircon technician that you engage in is proficient in repairing non inverter Aircon. You will also have to identify the model number of your Sanyo Aircon and check if the relevant technician has access to these Sanyo Aircon spare parts. Alternatively, you can also Whatsapp us to check with us if we have existing Sanyo Aircon spare parts for your model. Whichever that is, if you need help in Sanyo Aircon, feel free to whatsapp us. We will assist you as much as possible.

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