Error mode detected by outdoor unit

 

 

 

 

 

Operation of diagnostic function

 

 

 

 

 

 

Judgment and measures

Check

Cause of operation

Status of air

Condition

 

code

conditioner

 

 

 

 

 

 

 

 

 

 

Inverter over-current protective

All stop

Displayed when

1. Inverter immediately stops even if restarted.

 

circuit operates.

 

error is detected

• Compressor rare short

 

(For a short time)

 

 

 

 

 

2. Check IPDU.

 

 

 

 

 

 

 

 

• Cabling error

 

 

 

 

 

 

Error on current detection

All stop

Displayed when

1. Compressor immediately stops even if restarted.

 

circuit

 

error is detected

: Check IPDU.

 

• Current value is high at AC

 

 

2. Phase-missing operation of power supply

 

side even while compressor

 

 

• Check power voltage of R, S, T.

 

stops.

 

 

 

 

 

 

•Phase of power supply is missed.

Coming-off, disconnection or

All stop

Displayed when

1. Check outdoor temp sensor (TE, TS).

short of outdoor temp sensor

 

error is detected

2. Check CDB.

 

 

 

 

 

Coming-off, disconnection or

All stop

Displayed when

1. Check outdoor temp sensor (TD).

short of outdoor temp sensor

 

error is detected

2. Check CDB.

 

 

 

 

 

Compressor drive output error

All stop

Displayed when

1. Abnormal overload operation of refrigerating cycle

• Tin thermistor temp, Tin error

 

error is detected

2. Loosening of screws and contact error of IPDU and

(IPDU heat sink temp. is high.)

 

 

 

heat sink

 

 

 

3. Cooling error of heat sink

Communication error between

 

 

 

 

 

 

 

IPDU

 

 

 

4. Check cabling of CDB and IPDU.

• Connector coming-off

 

 

 

 

between CDB and IPDU

 

 

 

 

 

 

 

 

 

Compressor does not rotate.

All stop

Displayed when

1. Compressor error (Compressor lock, etc.)

(Over-current protective circuit

 

error is detected

: Replace compressor.

 

 

 

 

works when constant time

 

 

 

2. Cabling trouble of compressor (Phase missing)

passed after activation of

 

 

 

 

compressor.)

 

 

 

 

 

 

 

 

 

Discharge temp error

All stop

Displayed when

1. Check refrigerating cycle. (Gas leak)

• Discharge temp over

 

error is detected

2. Error of electron control valve

specified value was detected.

 

 

 

3. Check pipe sensor (TD).

 

 

 

 

 

 

 

 

 

Compressor breakdown

All stop

Displayed when

1. Check power voltage. (AC200V±20V)

• Operation frequency lowered

 

error is detected

2. Overload operation of refrigerating cycle

and stops though operation

 

 

 

3. Check current detection circuit at AC side.

had started.

 

 

 

 

 

 

 

 

 

 

 

 

High-voltage protection error

All stop

Displayed when

 

by TE sensor

 

error is detected

 

 

 

 

1. Overload operation of refrigerating cycle

• TE temp over specified value

 

 

 

was detected.

 

 

 

2. Check outdoor temp sensor (TE).

 

 

 

 

 

 

 

 

DC outdoor fan motor error

All stop

Displayed when

1. Position detection error

• IDC operation or lock was

 

error is detected

2. Over-current protection circuit operation of outdoor fan

detected by DC outdoor fan

 

 

 

drive unit

driving.

 

 

 

• Check CDB.

 

 

 

 

 

 

 

 

• Refer to Judgment of outdoor fan.

 

 

 

 

Error on IPDU position

All stop

Displayed when

1. Position detection circuit operates even if driving by

detection circuit

 

error is detected

removing 3P connector of compressor.

 

 

 

 

• Replace IPDU.

 

 

 

 

Coming-off, disconnection or

Operation

Displayed when

1. Check outdoor temp sensor (TO).

short of outdoor temp sensor

continues

error is detected

2. Check P.C. board.

– 120 –

Page 119 Page 121
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Image 120
Toshiba RAV-SM800AT-E, RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM560AT-E, RAV-SM560BT-E, RAV-SM800BT-E service manual 120, Ipdu
Page 119 Page 121

RAV-SM800BT-E, RAV-SM560BT-E, RAV-SM560AT-E, RAV-SM560UT-E, RAV-SM800UT-E specifications

Toshiba offers a range of innovative air conditioning units designed for optimal performance and efficiency, including the RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM800AT-E, RAV-SM560BT-E, and RAV-SM800BT-E models. Each of these units is part of Toshiba's commitment to quality air conditioning solutions that cater to both residential and commercial spaces.

The RAV-SM800UT-E and RAV-SM800AT-E models are notable for their impressive cooling and heating capacities, making them ideal for larger spaces. They feature advanced inverter technology, which adjusts the compressor's speed to maintain a consistent temperature while reducing energy consumption. This not only ensures comfort but also translates into significant energy savings over time.

In terms of design, these models benefit from Toshiba's sleek and modern aesthetics, allowing them to blend seamlessly into various interior styles. The noise levels are remarkably low, thanks to Toshiba's engineering, making these units suitable for use in environments where quiet operation is paramount, such as offices and bedrooms.

The RAV-SM560UT-E and RAV-SM560BT-E models offer similar performance but are tailored for smaller spaces without compromising on efficiency. They include features such as multilayer air filtration systems that effectively remove dust, allergens, and other pollutants, ensuring a healthier indoor air environment. Furthermore, they come equipped with intelligent control options, allowing users to operate the units remotely via smartphone applications.

Another standout characteristic of the RAV-SM800BT-E is its ability to provide both cooling and heating, making it a versatile option throughout the year. These units utilize R32 refrigerant, which has a lower global warming potential compared to traditional refrigerants, aligning with Toshiba's commitment to sustainability.

Each of these models is designed for easy installation and maintenance, featuring a user-friendly interface and robust build quality. The advanced diagnostics feature allows for timely troubleshooting and maintenance, ensuring the longevity of the units.

In summary, Toshiba's RAV-SM800UT-E, RAV-SM560UT-E, RAV-SM800AT-E, RAV-SM560BT-E, and RAV-SM800BT-E models represent a blend of innovative technology, user-centric design, and environmental responsibility. These units not only deliver exceptional climate control but also contribute to reducing energy costs and improving indoor air quality, making them a smart choice for a wide range of applications.
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