8-4-2. Outdoor Fan Motor

This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor.

Perform the trouble diagnosis by Test Run mode described on Installation Instructions of indoor unit.

Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors.

(B)When performing voltage measurement at the outdoor controller connector for (3) in the table below, the DC motor will trip and voltage output will stop approximately 10 seconds after operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor unit power, then, measure the voltage in Test Run mode.

[Trouble symptom 1] The fan does not stop when the outdoor unit stops. Outdoor unit controller trouble

[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.

(Diagnostic procedure)

*Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor unit controller (3 locations).

Measurement location

Normal value

 

 

(1) Vm-Gnd : Between pin 1 and pin 3 of FM1

DC 280V +/- 10%

(2) Vcc-Gnd : Between pin 1 of FM2 and pin3 of FM1

DC 15V +/- 10%

 

 

(3) Vs-Gnd : Between pin 3 of FM2 and pin3 of FM1

Fluctuation between DC 1.8V to 5.7V

(Diagnostic results)

All of the above measured values are normal. Fan motor trouble (Replace the motor.) Any one of the above measured values is not normal. Outdoor unit controller trouble

(Replace the controller .)

(Reference) DC motor connector pin arrangement

Connector No.

Pin

 

 

 

Pin 1: Vm (red)

 

 

FM1

Pin 2: Not used

 

 

 

Pin 3: Gnd (blue)

 

 

 

Pin 1: Vcc (brown)

 

 

FM2

Pin 2: PG (white)

 

 

 

Pin 3: Vsp (orange)

 

 

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor unit operates.

(There is trouble in the system that provides feedback of motor rotation speed from the motor to the outdoor unit controller.)

[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.

[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.

(Remedy for symptom 3 to 5)

It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble. Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.

49

Page 48 Page 50
Page 49
Image 49
Panasonic CU-KE30NKU, CU-KE36NKU Outdoor Fan Motor, Pin 3 Gnd blue, Pin 1 Vcc brown, Pin 2 PG white, Pin 3 Vsp orange
Page 48 Page 50

CS-KE30NKU, CS-KE36NKU, CU-KE30NKU, CU-KE36NKU specifications

The Panasonic CU-KE36NKU, CS-KE36NKU, CU-KE30NKU, and CS-KE30NKU air conditioning units represent the brand's commitment to delivering high-performance cooling solutions backed by innovative technologies. These units cater to both residential and commercial applications, ensuring users experience maximum comfort throughout the year.

One of the standout features of these models is their energy efficiency. Both units are equipped with advanced inverter technology, which allows for variable speed operation. This means they can adjust their power output according to the room's cooling needs, reducing energy consumption and minimizing electric bills while maintaining a consistent temperature. The models boast impressive SEER (Seasonal Energy Efficiency Ratio) ratings, making them environmentally friendly options.

Panasonic's nanoe-G technology is another remarkable feature incorporated into these models. This technology helps to purify the air by generating hydroxyl radicals, which eliminate airborne particles, odors, and harmful bacteria. This results in a healthier indoor environment, conducive to both comfort and well-being. The air purification aspect not only enhances the air quality but also extends the lifespan of the HVAC system by reducing the buildup of dust and contaminants.

In terms of user convenience, both the CU-KE and CS-KE series are equipped with programmable timers, allowing users to set their desired operation schedules. They also come with a remote control for ease of use, enabling adjustments from a distance. The installation process is straightforward, and the sleek design blends seamlessly with various interior aesthetics, making them a suitable choice for any room.

Durability is a key characteristic of Panasonic air conditioning units, and the CU-KE36NKU, CS-KE36NKU, CU-KE30NKU, and CS-KE30NKU are designed to withstand varying environmental conditions. Their robust construction ensures reliability and performance over the years. Additionally, both models come with a quiet operation feature that minimizes noise levels, allowing for comfortable use without disturbing daily activities.

In summary, the Panasonic CU-KE36NKU, CS-KE36NKU, CU-KE30NKU, and CS-KE30NKU are exceptional air conditioning units that combine energy efficiency, innovative purification technology, user-friendly features, and robust durability. These models are an ideal investment for anyone seeking a reliable and high-performance cooling solution.
Top Page Image Contents