FILE NO. SVM-03008

10-7. How to Diagnose Trouble in Outdoor Unit

 

 

 

10-7-1. Summarized inner diagnosis of inverter assembly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 10-7-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diagnosis/Process flowchart

 

 

 

Item

 

 

Contents

 

Summary

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Preparation

Turn “OFF” the power

 

 

 

 

Remove

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

breaker, and remove 3P

 

 

 

 

connector of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

compressor.

 

 

 

 

 

 

 

 

 

 

 

connector which connects

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

inverter and compressor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NG

 

 

 

 

Check

•

Check whether 25 A fuse

If fuse was blown,

 

 

 

 

 

 

 

 

 

 

 

 

Check 15 A fuse

 

 

 

 

 

 

 

 

 

 

on the control board

be sure to check the

 

(Part No.F01).

 

 

 

 

 

 

 

 

 

 

 

 

 

assembly is blown or not.

electrolytic capacitor

 

 

OK

 

 

 

 

 

 

 

 

 

 

 

 

 

(F01)

and diode block. (DB01)

 

 

 

 

 

 

Replace fuse.

 

 

 

 

 

 

 

 

 

 

 

Check

 

 

 

 

•

Connect discharge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

resistance (approx.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check

 

 

 

 

 

 

 

 

 

 

100Ω 40W) or soldering

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

iron (plug) between +, –

 

 

 

 

 

 

 

electrolytic

 

 

 

 

 

 

 

 

 

 

terminals of the electrolytic

 

 

 

 

 

 

 

capacitor,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

capacitor (500∝ F)

 

 

 

 

 

 

 

 

diode block

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DB01), etc.

 

 

 

 

 

 

 

 

 

of C14 (with printed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CAUTION HIGH VOLT-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AGE) on P.C. board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Discharging position

Plug of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Discharging period

soldering

 

terminal voltage

 

 

 

NG

 

 

 

 

 

 

 

 

 

 

10 seconds or more)

iron

 

of electrolytic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

capacitor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

electrolytic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

capacitor,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

diode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DB01), etc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation

Turn on power breaker, and

 

 

 

 

Does outdoor

 

 

 

NO

 

 

 

 

 

operate the air conditioner in

 

 

 

 

 

 

 

 

 

 

 

 

COOL mode by short-circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fan rotate?

 

 

 

 

 

 

 

 

 

 

 

of the timer.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

Measurement

Measure terminal voltage of

 

 

 

 

 

Does LED on control

YES

 

 

electrolytic capacity.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK if 500∝ F →

 

 

 

board flash or go on?

 

 

 

 

 

 

 

500∝ F: 400WV x 3

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

DC280 to 380 V

 

 

 

 

 

 

 

 

 

 

 

 

Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

After operation, turn off the

Remove CN300 by pushing

 

 

Remove connector

 

 

 

 

 

power breaker after 2

the part an arrow because

 

 

CN300 of outdoor

 

 

 

 

Stop

minutes 20 seconds passed,

CN01 is a connector with

 

NG fan motor, and using

 

 

 

 

 

and discharge the electrolytic

lock.

 

 

 

 

a tester, check

 

 

 

 

 

 

 

 

resistance value

 

 

 

 

 

capacity by soldering iron.

 

 

 

 

 

between every phase

 

 

 

 

 

Check voltage between

 

 

 

 

 

 

at motor side

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

motor phases.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

 

Check

•

Is not winding

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Measurement

 

 

between 1-2, 2-3, or

 

 

 

 

Replace

 

 

 

 

 

 

 

 

 

 

 

 

 

1-3opened or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

short-circuited?

 

 

 

 

outdoor

 

 

 

 

 

 

 

 

 

 

 

•

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is not frame grounded with

 

 

 

 

fan motor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1, 2 or 3?

→

Resistance between

 

A

 

 

 

 

B

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

phases should be approx.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

55 to 77Ω .

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

→

Should be 10MΩ

or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

more.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

– 65 –

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Toshiba RAS-13UAV-E2, RAS-13UKV-E2 service manual How to Diagnose Trouble in Outdoor Unit, AGE on P.C. board
Page 65 Page 67

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.

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