D Press the

ON/OFF

button twice within 3 seconds. The self-diagnosis

When the error history is reset, the display will look like the one shown below.

However, if you fail to reset the error history, the error content will be displayed again.

 

 

 

address or refrigerant address will blink.

5Cancel self-diagnosis.

Self-diagnosis can be cancelled by the following 2 methods.

H Press the

CHECK button twice within 3 seconds.

➔ Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the start

 

 

of self-diagnosis.

5 Press the

ON/OFF button.

➔ Self-diagnosis will be cancelled and the indoor unit will stop.

10-3-3. Remote Controller Diagnosis

If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.

1First, check that the power-on indicator is lit.

If the correct voltage (DC12 V) is not supplied to the remote controller, the indicator will not light.

If this occurs, check the remote controller's wiring and the indoor unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power on indicator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 Switch to the remote controller self-diagnosis mode.

A Press the FILTER

button to start self-diagnosis.

H Press the CHECK button for 5 seconds or more. The display content will

 

 

 

 

 

 

 

 

 

 

change as shown below.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

Check for other possible causes, as there is no problem with the remote controller.

[Where the remote controller is not defective, but cannot be operated.]

(Error display 2) [E3], [6833] or [6832] blinks. ➝ Transmission is not possible.

[When the remote controller malfunctions]

(Error display 1) "NG" blinks. ➝ The remote controller's transmitting-receiv- ing circuit is defective.

The remote controller must be replaced with a new one.

(Error display 3) "ERC" and the number of data errors are displayed.

➝Data error has occurred.

There might be noise or interference on the transmission path, or the indoor unit or other remote controllers are defective. Check the transmission path and other controllers.

The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmis- sion path. If such a problem is occurring, the transmitted data is affected by noise, etc. Check the transmission path.

When the number of data errors is "02":

Transmission data from remote controller

Transmission data on transmission path

4To cancel remote controller diagnosis

H Press the CHECK button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After approximately 30 seconds, the state in effect before the diagnosis will be restored.

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Mitsubishi Electronics PUY-A42NHA2, PUZ-A42NHA2-BS, PUZ-A30NHA2, PUY-A36NHA2, PUZ-A36NHA2 Remote Controller Diagnosis, On/Off
Page 31 Page 33

PUZ-A36NHA2-BS, PUY-A12NHA2, PUY-A42NHA2-BS, PUY-A30NHA2, PUZ-A36NHA2 specifications

Mitsubishi Electronics has long been a leader in the HVAC industry, and their range of air conditioning units, including the PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2, exemplifies their commitment to innovation and energy efficiency. These models are designed to provide optimal climate control for both residential and commercial applications, ensuring comfort throughout the year.

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In summary, the Mitsubishi Electronics PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2 air conditioning units are equipped with cutting-edge technology, offering energy efficiency, quiet operation, and smart functionality. Whether for residential or commercial use, these units are designed to meet the demands of modern climate control while prioritizing energy savings and sustainability.
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