FILE NO. SVM-03008

Block distinction

 

Operation of diagnosis function

 

 

 

 

 

 

 

 

 

 

Judgment and action

Check

Block

Check

Cause of operation

Air conditioner

Remarks

 

 

 

code

code

status

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ondoor

 

Inverter over-current

All off

Displayed when

Even if trying operation again, all

 

P.C.

 

protective circuit operates.

 

error is detected.

operations stop immediately. :

 

board

 

(Short time)

 

 

Replace P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Position-detect circuit error

All off

Displayed when

1.

Even if connecting lead wire of

 

 

 

or short-circuit between

 

error is detected.

 

compressor is removed, position-

 

 

 

windings of compressor

 

 

 

detect circuit error occurred.

 

 

 

 

 

 

 

: Replace P.C. board.

 

 

 

 

 

 

2. Measure resistance between

 

 

 

 

 

 

 

wires of compressor, and perform

 

 

 

 

 

 

 

short circuit. : Replace

 

 

 

 

 

 

 

compressor.

 

 

 

 

 

 

 

 

 

 

Current-detect circuit error

All off

Displayed when

Even if trying operation again, all

 

 

 

 

 

error is detected.

operations stop immediately. :

 

 

 

 

 

 

Replace P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Being out of place,

All off

Displayed when

1.

Check outdoor temp. sensors

 

 

 

disconnection or short-

 

error is detected.

 

(TE, TS).

 

 

 

circuit of outdoor temp.

 

 

2.

Check P.C. board.

 

 

 

sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Disconnection or short-

All off

Displayed when

1. Check discharge temp. sensor (TD).

 

 

 

circuit of discharge temp.

 

error is detected.

2. Check P.C. board.

 

 

 

sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor fan drive system

All off

Displayed when

Position-detect error, over-current

 

 

 

error

 

error is detected.

protective operation of outdoor fan

 

 

 

 

 

 

drive system, fan lock, etc. :

 

 

 

 

 

 

Replace P.C. board or fan motor.

 

 

 

 

 

 

 

 

 

Not

 

Outdoor heat exchanger

Operation

–––

1.

Check outdoor heat exchanger

 

displayed

 

temp. sensor error

continues.

 

 

temp. sensor (TE).

 

 

 

 

 

 

2.

Check P.C. board.

 

 

 

 

 

 

 

 

Ondoor

 

Compressor drive output

All off

Displayed when

When 20 seconds passed after

 

P.C.

 

error, Compressor error

 

error is detected.

startup, position-detect circuit error

 

board

 

(lock, missing, etc.),

 

 

occurred. : Replace compressor.

 

 

 

Break down

 

 

 

 

 

 

 

 

 

 

 

 

Others

 

Return serial signal has

Operation

Flashes when

1. Repeat Start and Stop with

 

(including

 

been sent when operation

continues.

trouble is

 

interval of approx. 10 to 40

 

compres-

 

started, but it is not sent

 

detected on

 

minutes. (Code is not displayed

 

sor)

 

from halfway.

 

return serial

 

during operation.)

 

 

 

(1) Compressor thermo.

 

signal, and

 

Supply gas. (Check also gas leak.)

 

 

 

operation

 

normal status

2.

Unit operates normally during

 

 

 

Gas shortage

 

when signal is

 

check.

 

 

 

Gas leak

 

reset.

 

If return serial signal does not

 

 

 

(2) Instantaneous power

 

 

 

stop between indoor terminal

 

 

 

failure

 

 

 

block, 2 and 3 replace inverter

 

 

 

 

 

 

 

P.C. board.

 

 

 

 

 

 

 

If signal stops between indoor

 

 

 

 

 

 

 

terminal block, 2 and 3 replace

 

 

 

 

 

 

 

indoor P.C. board.

 

 

 

 

 

 

 

 

 

 

 

Compressor does not

All off

Displayed when

1.

Trouble on compressor

 

 

 

rotate. (Current protective

 

error is detected.

2.

Trouble on wiring of compressor

 

 

 

circuit does not operate

 

 

 

(Missed phase)

 

 

 

when a specified time

 

 

 

 

 

 

 

passed after compressor

 

 

 

 

 

 

 

had been activated.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Discharge temp. exceeded

All off

Displayed when

1. Check discharge temp. sensor (TD).

 

 

 

117°C

 

error is detected.

2. Degassing

 

 

 

 

 

 

3. Trouble on P.M.V.

 

 

 

Break down of compressor

All off

Displayed when

1. Check power voltage. (220-240 V

 

 

 

 

 

error is detected.

 

+10%)

 

 

 

 

 

 

2.

Overload operation of

 

 

 

 

 

 

 

refrigeration cycle

 

 

 

 

 

 

 

Check installation condition

 

 

 

 

 

 

 

(Short-circuit of outdoor diffuser.)

 

 

 

Four-way valve inverse error

Operation

–––

1. Check 4-way valve operation.

 

 

 

(TC sensor value lowered

continues.

 

 

 

 

 

 

during heating operation.)

 

 

 

 

 

 

 

 

 

 

 

 

– 57 –

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Image 58
Toshiba RAS-13UAV-E2, RAS-13UKV-E2 service manual Short circuit. Replace
Page 57 Page 59

RAS-13UAV-E2, RAS-13UKV-E2 specifications

The Toshiba RAS-13UKV-E2 and RAS-13UAV-E2 air conditioning units represent a significant step forward in both comfort and energy efficiency. Designed for residential and light commercial use, these models are packed with features that cater to diverse climate control needs while adhering to modern standards of sustainability.

One of the standout features of both models is the implementation of inverter technology. This advanced system allows for more precise temperature control by adjusting the compressor speed based on the ambient temperature requirements. This not only enhances energy efficiency but also ensures a quieter operation compared to traditional air conditioning systems. As a result, users benefit from consistent comfort without the disruptive sounds often associated with cooling units.

The RAS-13UKV-E2 and RAS-13UAV-E2 also feature a high energy efficiency rating, which is crucial for reducing electricity bills. The Seasonal Energy Efficiency Ratio (SEER) is a vital measure of energy efficiency over an entire cooling season. Both units excel in this regard, making them an environmentally friendly choice. This is further supported by Toshiba's commitment to incorporating R32 refrigerant, known for its lower environmental impact compared to older refrigerants.

User convenience is enhanced with integrated smart controls. Both models are compatible with wireless remote control features, allowing for easy adjustments from a distance. This is complemented by programmable settings that let users schedule operation times, ensuring that the units run only when needed, which further optimizes energy consumption.

Design-wise, these air conditioners boast a sleek and modern appearance, making them a visually appealing addition to any room. They are constructed with durable materials that ensure longevity and reliability. Moreover, the filters are designed for easy maintenance, ensuring cleaner indoor air quality and prolonging the lifespan of the unit.

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