7. Test run

7.1. Before test run

After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage, looseness in the power sup- ply or control wiring, wrong polarity, and no disconnection of one phase in the supply.

Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0 MΩ.

Do not carry out this test on the control wiring (low voltage circuit) termi- nals.

Warning:

Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ.

7.2. Test run

Refer to the installation manual that comes with each remote controller for details.

7.3. Self-check

Refer to the installation manual that comes with each remote controller for details.

RF thermostat is not established.

Refer to the following tables for details on the check codes. (IR wireless remote controller) [Output pattern A]

Beeper sounds

Beep

Beep Beep Beep

Beep

Beep Beep

OPERATION INDICATOR lamp blinking pattern

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1st

 

 

2nd

 

 

3rd

 

 

nth

 

 

 

 

 

1st

 

 

2nd · · · Repeated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Off

 

 

On

 

On

 

On

 

On

 

Off

 

 

On

 

On

Self-checkApprox. 2.5 sec.

0.5 sec.

0.5 sec.

0.5 sec.

0.5 sec.

Approx. 2.5 sec.

0.5 sec.

0.5 sec.

starts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Start signal

Number of blinks/beeps in pattern indicates the check

 

Number of blinks/beeps in pattern indicates

received)

 

code in the following table (i.e., n=5 for “P5”)

 

 

 

the check code in the following table

 

 

 

 

 

 

 

[Output pattern B]

Beeper sounds

Beep

 

 

OPERATION

 

 

 

 

 

 

 

 

 

 

 

INDICATOR

 

 

 

 

 

 

 

 

 

 

 

lamp blinking

 

 

 

 

 

 

 

Off

 

 

pattern

Self-checkApprox. 2.5 sec.

 

 

 

 

 

 

starts

 

 

 

(Start signal

 

 

 

received)

 

 

 

 

Beep

Beep

Beep

 

Beep

 

 

 

 

 

 

 

Beep

Beep

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1st

 

 

2nd

 

 

3rd

 

 

 

nth

 

 

 

 

 

 

 

 

 

1st

 

 

2nd · · · Repeated

On

 

 

On

 

On

 

On

 

 

On

 

 

 

 

 

 

 

 

On

 

On

 

 

 

 

 

 

 

Off

 

 

 

On

 

 

 

Approx. 3 sec.

 

0.5 sec.

0.5 sec. 0.5 sec.

 

0.5 sec.

Approx. 2.5 sec.

 

 

 

Approx. 3 sec.

 

0.5 sec.

0.5 sec.

Number of blinks/beeps in pattern indicates the check

 

 

 

 

Number of blinks/beeps in pattern indicates

code in the following table (i.e., n=5 for “U2”)

 

 

 

 

 

 

the check code in the following table

[Output pattern A] Errors detected by indoor unit

 

Wired remote

 

 

IR wireless remote controller

controller

 

 

 

RF thermostat

Symptom

Remark

Beeper sounds/OPERATION

Check code

 

 

INDICATOR lamp blinks

 

 

(Number of times)

 

 

 

1

P1

Intake sensor error

 

2

P2

Pipe (TH2) sensor error

 

P9

Pipe (TH5) sensor error

 

 

 

3

E6, E7

Indoor/outdoor unit communication error

 

4

P4

Drain sensor error / Float switch connector open

 

5

P5

Drain pump error

 

PA

Forced compressor error

 

 

 

6

P6

Freezing/Overheating protection operation

 

7

EE

Communication error between indoor and outdoor units

 

8

P8

Pipe temperature error

 

9

E4

Remote controller signal receiving error

 

10

 

11

 

12

Fb

Indoor unit control system error (memory error, etc.)

 

No sound

E0, E3

Remote controller transmission error

 

No sound

E1, E2

Remote controller control board error

 

No sound

– – – –

No corresponding

 

10

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Image 10
Mitsubishi Electronics PCA-A.KA4 installation manual Test run, Before test run, Self-check, Output pattern B

PCA-A.KA4 specifications

The Mitsubishi Electronics PCA-A.KA4 is an advanced air conditioning unit designed to deliver exceptional comfort and efficiency in various settings. Known for its innovative technology and user-friendly design, this model is a preferred choice for both residential and commercial applications.

One of the main features of the PCA-A.KA4 is its advanced inverter technology. This system allows for variable speed operation, which means that the compressor can adjust its output based on the current cooling demand. As a result, the unit operates more efficiently, consuming less energy compared to traditional fixed-speed air conditioners. This not only reduces energy bills but also lessens the environmental impact, making the PCA-A.KA4 an eco-friendly option.

The PCA-A.KA4 also boasts a high seasonal energy efficiency ratio (SEER) rating, which indicates its effectiveness in converting electricity into cooling power over an entire season. This high efficiency is a significant advantage, particularly in regions with hot climates, where air conditioning usage is prevalent.

Another notable characteristic is the use of cutting-edge air purification technology. The PCA-A.KA4 is equipped with a multi-stage filtration system that captures dust, allergens, and other airborne particles. This feature enhances indoor air quality, ensuring that occupants breathe cleaner and healthier air, which is particularly beneficial for those with respiratory issues or allergies.

In terms of user convenience, the PCA-A.KA4 is designed with an intuitive remote control that provides easy operation from anywhere in the room. Additionally, the unit can be integrated with smart home systems, allowing for remote access and control via smartphones or tablets. This flexibility enables users to adjust settings even when they are away from home, ensuring optimal comfort at all times.

The PCA-A.KA4 also includes a quiet operation mode, minimizing noise levels to promote a peaceful environment. This feature is especially valuable in bedrooms or offices where concentration and relaxation are key.

Overall, the Mitsubishi Electronics PCA-A.KA4 represents a harmonious blend of comfort, efficiency, and smart technology. With its advanced features and user-friendly design, it stands out as a reliable air conditioning solution capable of meeting modern demands for both performance and sustainability. Whether for home or business use, the PCA-A.KA4 delivers a superior cooling experience that enhances overall well-being.