8-2. Troubleshooting

8-2-1. Outline of judgment

The primary judgment to check whether a trouble occurred in the indoor unit or outdoor unit is carried out with the following method.

Method to judge the erroneous position by flashing indication on the display part of the indoor unit (sensors of the receiving part)

The indoor unit monitors the operating status of the air conditioner, and the blocked contents of self-diagnosis are displayed restricted to the following cases if a protective circuit works.

 

 

 

 

 

 

: Go off,

: Go on,

: Flash (0.5 sec.)

 

 

 

 

 

 

Lamp indication

Check code

 

Cause of tr oub le occurrence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

Timer

Ready

 

 

 

 

 

 

 

 

 

 

 

 

 

—

Power supply OFF or miswiring between receiving unit and indoor unit

 

No indication at all

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E01

Receiving error ⎫

 

⎫

 

 

 

 

 

 

 

 

 

 

⎬ Receiving unit

Miswiring or wire connection error

 

 

 

 

E02

Sending error

⎬

 

 

 

 

⎭

 

 

 

 

 

 

 

 

 

⎭

between receiving unit and indoor unit

Operation

Timer

Ready

E03

Communication stop

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E08

Duplicated indoor unit No.

 

 

 

Setup error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flash

 

 

E09

Duplicated header units of remote controller

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E10

Communication error between CPUs on indoor unit P.C. board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wire connection error between indoor units, Indoor power OFF

 

 

 

 

E18

(Communication stop between indoor master and follower or between main

 

 

 

 

and sub indoor twin)

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

Timer

Ready

 

Miswiring between indoor unit and outdoor unit or connection erorr

 

 

 

 

E04

(Communication stop between indoor and outdoor units)

 

 

 

 

 

Outdoor unit case thermostat work on ................ Comp. overheating

 

 

 

 

 

 

 

 

Flash

 

 

 

 

 

 

 

Outdoor wiring error

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

Timer

Ready

P01

Overflow was detected. ⎫

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P10

Indoor DC fan error

⎬ Protective device of indoor unit worked.

 

 

Alternate flash

P12

⎭

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P03

Outdoor unit discharge temp. error

 

 

⎫

Protective device of

*1

 

 

 

 

Case thermostat work on,

 

 

⎬

 

 

 

 

 

 

 

 

 

P04

Power error, High pressure protection

 

⎭

outdoor unit worked.

 

 

 

 

 

 

 

 

 

 

 

P05

Negative phase detection error

⎫

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat sink overheat error

 

⎬

 

Outdoor unit error

 

 

 

 

P07

 

 

 

 

 

 

 

Gas leak detection error

 

⎭

 

 

 

 

 

Operation

Timer

Ready

P15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P19

4-way valve system error (Indoor or outdoor unit judged.)

 

 

 

 

 

 

 

 

 

 

Alternate flash

P20

Outdoor unit high pressure protection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P22

Outdoor unit: Outdoor unit fan error

⎫

 

 

 

 

 

 

 

 

 

 

 

 

Protective device of

 

 

 

 

 

 

 

 

 

 

 

 

 

P26

Outdoor unit: Inverter Idc operation

 

⎬

outdoor unit worked.

*1

 

 

 

P29

Outdoor unit: Position detection error

⎭

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P31

Stopped because of error of other indoor unit in a group

 

 

 

 

 

(Check codes of E03/L03/L07/L08)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1:These are representative examples and the check code differs according to the outdoor unit to be combined.

– 39 –

Page 38 Page 40
Page 39
Image 39
Toshiba RAV-SM1403AT-E1 service manual Troubleshooting, Outline of judgment
Page 38 Page 40

RAV-SM1403AT-E1 specifications

The Toshiba RAV-SM1403AT-E1 is a state-of-the-art air conditioning system designed for residential and commercial applications. Its advanced features and cutting-edge technology ensure optimal cooling and heating performance, making it a popular choice among consumers and businesses alike.

One of the standout characteristics of the RAV-SM1403AT-E1 is its energy efficiency. This model is equipped with a highly efficient inverter compressor that adjusts its output based on the cooling load required, which results in significant energy savings compared to traditional air conditioning systems. Its impressive Seasonal Energy Efficiency Ratio (SEER) ratings highlight its ability to provide effective climate control while minimizing electricity consumption.

The RAV-SM1403AT-E1 utilizes Toshiba’s innovative DC inverter technology, which allows for smoother and quieter operation. This means that users can enjoy a comfortable indoor environment without the disruptive noise often associated with conventional models. In addition to its quiet operation, this air conditioner also features an advanced air filtration system that helps to maintain indoor air quality by removing dust, allergens, and other pollutants.

Another major feature of this system is its versatility in installation. The RAV-SM1403AT-E1 can be installed in various configurations, allowing it to adapt to different spaces and design requirements. It supports multiple indoor units that can be connected to a single outdoor unit, providing flexibility for cooling or heating multiple areas simultaneously.

Smart technology is also integrated into the RAV-SM1403AT-E1. Users can take advantage of remote control options, including Wi-Fi capabilities that allow for convenient management of the air conditioning system via smartphones or tablets. This level of control ensures that users can adjust settings even when they are not present, increasing comfort and efficiency.

The build quality of the Toshiba RAV-SM1403AT-E1 reflects its durability and reliability. Designed to withstand varying environmental conditions, it includes corrosion-resistant features that extend the lifespan of the unit, making it a practical investment for both home and commercial use.

In summary, the Toshiba RAV-SM1403AT-E1 combines energy efficiency, advanced technology, and flexible installation options, making it an excellent choice for those seeking a high-performance air conditioning solution. With its innovative features and commitment to sustainability, this model stands out in the competitive HVAC market.
Top Page Image Contents