Part 4 Trouble Shooting

Error code

Description

Cause of error

 

 

 

 

 

• Wrong or missing wiring between indoor and outdoor unit cable

 

 

• Defect of communication components in indoor pcb assembly

5

Communication Error

• Defect of communication components in outdoor pcb assembly

• Defect of power supply components in outdoor pcb assembly

 

 

• No ground connection in air conditioner unit

 

 

(affected by noise in power source)

 

 

 

Check flow

Wiring connection Is right ?

No

Indoor Outdoor

1(BR) 1(BR)

2(BL) 2(BL) 3(GN/YL) 3(GN/YL)

4(RD) 4(RD)

YES

YES

 

 

Is the voltage of T/Block

 

Is the voltage of GND & DC5V in

 

 

, in outdoor about

 

 

 

 

Outdoor pcb about DC 5V ?

 

 

AC 208~230V ?

 

 

 

 

 

 

 

 

 

 

 

 

No

 

No

 

 

 

 

 

 

 

Check if the power connector

 

Check FUSE, NF01/02J, PTC,

 

 

is not connected to the

 

 

 

 

Power Module, BD-01S in

 

 

Terminal Block of the indoor

 

 

 

 

Outdoor pcb assembly

 

 

unit.

 

 

 

 

 

 

 

 

 

 

 

YES

 

YES

Communication circuit of indoor

Ground connection is installed ?

& outdoor

pcb Is right ?

(power outlet or outdoor chassis)

No

Check IC01K, IC02K,D01K~D03K, ZD01K~ZD03K, R01K~R10K, C01K~C04K

No

Earth port

 

Install ground connection from outdoor unit. (In case power outlet has no earth port)

- 50 -

Only for training and service purposes

Page 50
Image 50
Heat Controller VMC09SB-1/VMH09SB-1, VMC18SB-1/VMH18SB-1, VMC30SB-1/VMH30SB-1 service manual Description Cause of error

VMC12SB-1/VMH12SB-1, VMC18SB-1/VMH18SB-1, VMC24SB-1/VMH24SB-1, VMC09SB-1/VMH09SB-1, VMC30SB-1/VMH30SB-1 specifications

The Heat Controller VMC30SB-1/VMH30SB-1, VMC09SB-1/VMH09SB-1, VMC24SB-1/VMH24SB-1, VMC18SB-1/VMH18SB-1, and VMC12SB-1/VMH12SB-1 are versatile and efficient HVAC systems designed for residential and commercial applications. These units stand out due to their innovative technologies, user-friendly features, and reliable performance, making them an excellent choice for heating and cooling needs.

One of the most significant features of these units is their Energy Efficiency Rating (EER). Each model has been engineered to provide optimal energy savings, thus minimizing operating costs and environmental impact. Utilizing advanced inverter technology, the systems adjust their cooling and heating output according to the room's demand, ensuring that energy is used only when necessary. This results in quieter operation, less energy consumption, and enhanced comfort.

The VMC and VMH models are equipped with high-performance compressors that provide rapid heating and cooling capabilities. This feature allows users to attain their desired temperatures more quickly compared to traditional systems, ensuring a comfortable environment throughout the year. In addition, the systems maintain consistent temperatures and reduce temperature fluctuations, contributing to a more enjoyable living or working space.

Another key characteristic of the Heat Controller units is their comprehensive filtration systems. These include multi-stage filters designed to trap dust, allergens, and other particulate matter, contributing to improved indoor air quality. This aspect is particularly important for those who suffer from allergies or respiratory issues, as the units help to create a cleaner, healthier living environment.

The compact design of these models allows for easy installation in various spaces, including small apartments or tight commercial setups. They feature an intuitive control panel that offers user-friendly programming options, enabling users to schedule operations according to their daily routines. Additionally, many models include smart connectivity features, allowing remote access and adjustments via mobile apps.

Finally, the aesthetic design of the VMC and VMH series complements modern interior decors, ensuring that these units not only perform well but look good while doing so. With a combination of reliability, energy efficiency, and user-centric features, the Heat Controller VMC and VMH series stand out as an excellent investment for any heating and cooling requirement. These units promise comfort, convenience, and cost-effective operation.