This product is designed to control the weather conditions used in buses. It works 100% compatible with other systems in the bus. It can provide electronic control of Air Conditioning Control Equipment. It has the ability to provide continuous information to the vehicle with CAN-BUS communication method.


EMC has EMI certificates and has successfully passed R10 tests for Commercial vehicle.

Ability to make manual heating or cooling settings between 18-28 ° C. Measured and adjusted temperature values can be seen on the display. There are up to 4 sensors for this process.
Automatic mode lock function is available for municipal vehicles.
Pressure, Icing and Air Conditioner failure signals can be seen on the display.
Auto Mode has the ability to work and switch in Manual Mode.
Active cooling and heating can be done with 3-stage fan speed setting for the front area of the vehicle and 2-stage fan speed setting for the rear area.
Thanks to the Defrost Mode feature, windshield defrosting can be done easily.
For heating and cooling in the vehicle, blowing can be selected for the windscreen, passenger or foot area.
Air conditioning fresh air Control
Defroster Fresh Air control
3 stage Air Conditioner Speed Setting
3 Hot Water Valve Settings

In commercial vehicles, brushed or brushless motors are used for cooling and heating.
Since the motors draw high current, they are controlled by electronic driver cards. Electronic driver cards are controlled by On / Off and PWM signals.

From the control control card, + 24V low current signal output signals are sent to other units in the vehicle and the following units are controlled.

These signals from the control control card are as follows.

Pump Motor Signal Output

The hot water, which is heated to 73 ° C by the vehicle with the pump motor, is sent to the heating system.

Sending this signal is sufficient to drive the pump motor.

An extra driver must be required to drive the Pump Motor.

A / C Engine Signal Output

The second biggest engine in the vehicle is controlled and used for cooling operation with the signal output of the air conditioner engine.

These engines are located in the back of the bus, closest to the vehicle engine. Air conditioning engines generally take advantage of

Vehicle Engine mechanics. With this signal, only the A / C engine is started and cold air is made ready in the A / C unit.

Air Conditioner Fan Motors Output

It is the engine signal that enables cold air to be sent to the air duct prepared by the air conditioner engine with the A / C fan motor output signal.

These engines are located from the top of the vehicles. The number of engines is usually between 2 and 12, depending on the size of the vehicle.

Condenser Fan Motor Output

After the vehicle heated water reaches 73 ° C, it starts to circulate in the radiators.

Condenser motors connected to the radiator cores are operated with the condenser fan motor output signal.

This is how hot air is sent to the vehicle.

The speeds of the following motors are controlled by the PWM output signals sent from the Control Card to the Electronic Driver card.

Air Conditioner Fan Motors

Rear Fan Motors

Defroster Engine

In the vehicle heating / cooling system, flap motors are used to direct hot, cold or fresh air.

These flap motors controlled by the control card are as follows.

Defroster Fresh Air Valve Motor

Air Conditioning Canal Upper Clamp Motor

Air Conditioning Fresh Air Valve Motor

Hot Water Valve Valve Motor

The Climate Control Card can work in Automatic Mode to keep the interior temperature of the vehicle constant thanks to the
Temperature Sensors in different areas inside and outside the vehicle.

For this reason, there are 2 in-car temperature sensors and 1 outdoor temperature sensor input.

There are inputs for Pressure sensor, Icing Sensor, Air Conditioning Fan Failure Sensors on the air conditioner unit.

In addition to all these features, the Air Conditioner Remote card has the following features optional for use in different vehicles.

4 Pieces + 24V Signal Output

2 Diverter Motor Outputs

1 Temperature Sensor Input

1 Failure Notification Entry

This project was carried out by KORMAS A.S. for BMC in 2017. This control card is used in Istanbul Metropolitan Municipality Buses.