Manuals / Mitsubishi Electronics / Household Appliance / Air Conditioner

Mitsubishi Electronics MSZ-GA35VA, MSZ-GA25VA Check of indoor fan motor, Troubleshooting flow

Models: MSZ-GA25VA MSZ-GA35VA MSZ-GA22VA

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9-6. Troubleshooting flow

When OPERATION INDICATOR lamp flashes 3-time. Indoor fan does not operate.

A Check of indoor fan motor

The indoor fan motor error has occurred, and the indoor fan doesn't operate.

Turn OFF the power supply.

Insert a stick such as a screw driver into the air outlet, and check if there is any catch in the rotation of the line flow fan.

Is there any foreign matter that interferes the rotation of the line flow fan?

Yes

Adjust the line flow fan and remove the foreign matter.

No

Pay careful attention to the high voltage on the fan motor connector CN211.

w

Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch.

Measure the supply voltage as follows within 12 seconds after EMERGENCY OPERATION switch is pressed.

If more than 12 seconds passes by, turn OFF the power supply and turn ON it again, then measure the voltage.

1.Measure the voltage between CN211 1(+) and 3(-). 2.Measure the voltage between CN211 5(+) and 3(-).

wIf 12 seconds or more passes after EMERGENCY OPERATION switch is pressed, the voltage mentioned above 2 goes 0V DC although the indoor electric control P.C. board is normal.

Is there 311V DC between

 

 

 

CN211 1 (+) and 3 (-), and does

 

 

 

the voltage between CN211 5(+)

Yes

 

and 3(-) rise to the range of 3 to 6V

 

 

Replace the indoor fan motor.

 

DC within 12 seconds after

 

 

 

 

 

 

EMERGENCY OPERATION switch

 

 

 

is pressed?

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

Indoor electronic control P.C. board

CN211

Replace the indoor electronic control P.C. board.

The indoor fan motor error has occurred, and the indoor fan repeats "12-second ON and 30-second OFF" 3times, and then stops.

Measure the voltage between CN211 6(+) and 3(-) while the fan

motor is rotating.

Is it unchanged holding

Changed

Replace the indoor electronic control P.C. board.

0V DC or 15V DC?

 

Unchanged

Replace the indoor fan motor.

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Mitsubishi Electronics MSZ-GA35VA, MSZ-GA25VA, MSZ-GA22VA service manual Check of indoor fan motor, Troubleshooting flow
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MSZ-GA25VA, MSZ-GA35VA, MSZ-GA22VA specifications

The Mitsubishi Electronics MSZ-GA series encompasses a range of wall-mounted split systems, including the MSZ-GA22VA, MSZ-GA25VA, and MSZ-GA35VA models, designed to provide efficient heating and cooling solutions for a variety of environments. Renowned for their advanced technology and user-friendly features, these air conditioning units are a perfect match for residential and light commercial spaces.

One of the standout features of the MSZ-GA series is the innovative INVERTER technology. This system intelligently adjusts the compressor speed, ensuring that the units operate at optimal efficiency. By maintaining a consistent temperature without constant on/off cycling, this technology significantly reduces energy consumption, leading to lower electricity bills and a reduced carbon footprint.

Another major aspect of these models is their powerful yet quiet operation. The units are designed with advanced noise-reduction technology, allowing them to function at low sound levels, making them ideal for bedrooms and living rooms where disturbances should be kept to a minimum. With noise levels as low as 19 dB(A), users can enjoy a peaceful indoor environment even while the system is running.

Additionally, the MSZ-GA22VA, MSZ-GA25VA, and MSZ-GA35VA models feature an elegant and compact design, which easily integrates into any interior decor. Their sleek and minimalist aesthetics do not compromise on performance, making them a favorite among homeowners and designers alike.

The series also comes with a user-friendly remote control, enabling easy temperature adjustments and settings from across the room. For added convenience, these models include a programmable timer feature, allowing users to set the system to operate according to their schedules. This flexibility not only enhances comfort but also optimizes energy usage.

Moreover, the MSZ-GA series incorporates a powerful air filtration system that helps improve indoor air quality. Featuring a washable anti-allergy enzyme filter, these units capture dust and allergens, making the air cleaner and healthier for occupants.

With a focus on energy efficiency, quiet operation, and advanced air purification, the Mitsubishi Electronics MSZ-GA22VA, MSZ-GA25VA, and MSZ-GA35VA represent an excellent choice for anyone seeking reliable and effective climate control solutions. Whether heating or cooling, these models ensure maximum comfort while minimizing energy usage and environmental impact.