11-9. EMERGENCY/TEST OPERATION

In case of test run operation or emergency operation, use EMERGENCY OPERATION switch on the front of the indoor unit. Emergency operation is available when the remote controller is missing, has failed or the batteries of the remote controller run down. The unit will start and OPERATION INDICATOR lamp will light.

The first 30 minutes of operation is the test run operation. This operation is for servicing. The Indoor fan speed runs at High speed and the system is in continuous operation (with thermostat ON).

After 30 minutes of test run operation the system shifts to EMERGENCY COOL / HEAT MODE with a set temperature of 75°F. The fan speed shifts to Med..

All protective operations such as the coil frost prevention works even in emergency operation.

In the test run or emergency operation, the horizontal vane operates in VANE AUTO ( ) mode.

Emergency operation continues until EMERGENCY OPERATION switch is pressed once or twice or the unit receives any signal from the remote controller. In case of latter normal operation will start.

NOTE : Do not press EMERGENCY OPERATION switch during normal operation.

E.O.

Operation mode

COOL

HEAT

(MSZ)

 

 

Set temperature

75° F

75° F

 

 

 

Fan speed

Medium

Medium

 

 

 

Horizontal vane

Auto

Auto

EMERGENCY OPERATION switch

SW

The operation mode is indicated by the Operation Indicator lamp on the indoor unit as following

Operation indicator lamp (MSZ type)

Press once <Cool>

Lighted

 

Press again <Heat>

Not lighted

Press once again <Stop>

(MSY type)

Press once <Cool>

Press again <Stop>

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

CCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in Dec. 2006. No. OB450 REVISED EDITION-A 7 Distributed in Apr. 2006. No. OB450 7

Made in Japan

New publication, effective Dec. 2006 Specifications subject to change without notice.

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Mitsubishi Electronics MSY-A24NA, MSY-A15NA, MSY-A17NA, MSZ-A17NA, MSZ-A15NA EMERGENCY/TEST Operation, Made in Japan

MSY-A15NA, MSZ-A09NA, MSZ-A17NA, MSZ-A12NA, MSZ-A24NA specifications

Mitsubishi Electronics is a renowned name in the HVAC (heating, ventilation, and air conditioning) industry, known for innovative, efficient air conditioning solutions. The MSY-A17NA, MSY-A24NA, MSZ-A15NA, MSZ-A24NA, and MSZ-A12NA models exemplify this legacy, offering advanced features and cutting-edge technology. These models cater to various room sizes and requirements, providing comfortable and reliable climate control.

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