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COOL/HEAT mode lock

The COOL/HEAT mode lock requires initial programing during installation. Please consult your authorized dealer for
assistance. The COOL/HEAT mode lock sets the unit forcibly to either COOL or HEAT operation. This function is convenient

when you wish to set all indoor units connected to the multi system to the same operation mode.

NOTE

• The COOL/HEAT mode lock cannot be activated together with the priority room setting.

Priority room setting

The priority room setting requires initial programing during installation. Please consult your authorized dealer for assistance.
The room designated as the priority room takes priority in the following situations.

Operation mode priority

• 

As the operation mode of the priority room takes precedence, you can select a different operation mode from other

rooms.

[Example]

• 

Room A is the priority room in this example.

When COOL operation is selected in room A while operating the following modes in room B, C and D:

Operation mode in room B, C and D

Status of room B, C and D when the unit in room A is in COOL operation

COOL or DRY or FAN

The current operation mode is maintained.

HEAT

The unit enters the standby mode. Operation resumes when the room A unit stops operating.

AUTO

If the unit is set to COOL operation, it continues. If the unit is set to HEAT operation, it enters the 
standby mode. Operation resumes when the room A unit stops operating.

Priority when OUTDOOR UNIT QUIET operation is used 

(Function unavailable in the FDMQ series)

[Example]

• 

Room A is the priority room in this example. 

Just by setting the unit in room A to QUIET operation, the air conditioner starts OUTDOOR UNIT QUIET operation.

 

You do not have to set all the indoor units in operation to OUTDOOR UNIT QUIET operation.

English 

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English

01_EN_3P500431-1.indd   6

10/12/2017   11:57:50

Summary of Contents for FDMQ12RVJU

Page 1: ...oy year round comfort Enjoy year round comfort Enjoy year round comfort Enjoy year round comfort DAIKIN ROOM AIR CONDITIONER OPERATION MANUAL English Fran ais Espa ol MODELS FDMQ09RVJU FDMQ12RVJU FDMQ...

Page 2: ...in equipment or property damage accidents only DANGER Do not install the unit in an area where flammable materials are present due to risk of explosion resulting in serious injury or death Any abnorm...

Page 3: ...t from lightning or other sources may cause damage to the air conditioner Be sure to install a ground fault circuit interrupter Failure to install a ground fault circuit interrupter may result in elec...

Page 4: ...ith a mist of mineral oil such as cutting oil b Locations such as coastal areas where there is a lot of salt in the air c Locations such as hot springs where there is a lot of sulfur in the air d Loca...

Page 5: ...r temperature sensor back Model name Indoor Unit a b c d e f g h i j k l m a Drain discharge device built in g Refrigerant piping b Drain pan inspection window h Drain piping c Remote controller Wired...

Page 6: ...ng active Refer to Priority room setting on the next page NIGHT QUIET mode Available only for COOL operation NIGHT QUIET mode requires initial programing during installation Please consult your retail...

Page 7: ...erent operation mode from other rooms Example Room A is the priority room in this example When COOL operation is selected in room A while operating the following modes in room B C and D Operation mode...

Page 8: ...d accessory Do not attach objects other than the genuine air filter e g kitchen paper to the air inlet Otherwise the performance of the air conditioner will be degraded and icing or water leakage may...

Page 9: ...select FAN operation When a multi outdoor unit is connected make sure the HEAT operation is not being used in other rooms before you use the FAN operation Page 5 2 Press the ON OFF button and start o...

Page 10: ...an rotates while the air conditioner is not in operation After operation is stopped The outdoor fan continues rotating for another 1 minute for system protection While the air conditioner is not in op...

Page 11: ...may result in problems electric shock or fire Consult the dealer where you bought the air conditioner Do not attempt to repair or modify the air conditioner by yourself Incorrect work may result in e...

Page 12: ...The two dimensional bar code is a manufacturing code 3P500431 1 M17B178 1711 HT...

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