FILE NO. SVM-03008

10. HOW TO DIAGNOSE THE TROUBLE

The pulse modulating circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according to the diagnosis procedure as described below. (Refer to the check points in servicing written on the wiring diagrams attached to the indoor/outdoor units.)

Table 10-1

No.

Troubleshooting Procedure

Page

 

 

 

1

First Confirmation

52

 

 

 

2

Primary Judgment

53

 

 

 

3

Judgment by Flashing LED

54

 

of Indoor Unit

 

 

 

 

4

Self-Diagnosis by Remote Control

55

 

 

 

5

Judgment of Trouble by

58

 

Every Symptom

 

 

 

 

6

How to Check Simply the Main Parts

66

 

 

 

NOTE:

A large-capacity electrolytic capacitor is used in the outdoor unit control (inverter). Therefore, if the power supply is turned off, charge (charging voltage DC280V) remains and discharging takes a lot of time. After turning off the power source, if touching the charging section before discharging, an electrical shock may be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

<Discharging method>

(1)Remove the inverter cover (plating) by opening four mounting claws.

(2)As shown below, connect the discharge resistance (approx. 100Ω 40W) or plug of the soldering iron to voltage between + – terminals of the C14

(“CAUTION HIGH VOLTAGE 380 V” is indicated.) electrolytic capacitor (500∝ F/400 V) on P.C. board, and then perform discharging.

 

 

Inverter cover

Discharging position

Plug of

P. C. board

soldering

(Soldered surface)

(Discharging period

iron

 

10 seconds or more)

 

 

 

10-1. First Confirmation

10-1-1. Confirmation of power supply

Confirm that the power breaker operates (ON) normally.

Fig. 10-1

10-1-2. Confirmation of power voltage

Confirm that power voltage is AC 220-240 V ± 10%. If power voltage is not in this range, the unit may not operate normally.

– 52 –

Page 52 Page 54
Page 53
Image 53
Toshiba RAS-13UKV-E2, RAS-13UAV-E2 service manual HOW to Diagnose the Trouble, First Confirmation
Page 52 Page 54

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.

The Toshiba RAS-13UKV-E2 and RAS-13UAV-E2 units also come equipped with advanced air purification technologies. These features help to reduce airborne pollutants and allergens, contributing to a healthier indoor environment. With exceptional cooling and heating capabilities, easy installation, and advanced features, these models are designed to meet the modern user's needs for comfort, efficiency, and health. Overall, they represent an excellent investment in both cooling technology and eco-friendly practices.
Top Page Image Contents