Procedure 2 : Exchange of P.C. board for service

1.Exchange P.C. board with a P.C. board for service.

In this time, the jumper line (cut) setup or the (short-circuit) connecting connector setup on the previous P.C. board should be reflected on P.C. board for service. (See the blow figures.)

(MCC-1402) JP1

CN41

(MCC-1403)

JP001 CN041

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CN34

From the left

CN112,111,110

CN030

When short-circuited plug is mounted to P.C. board before change, re-mount the short-circuited plug as previons.

2.It is necessary to set Indoor unit to be exchanged : Remote controller = 1 : 1

Based upon the system configuration, turn on power of the indoor unit with one of the following items.

1)Single (Individual) operation

Turn on power of the indoor units and proceed to Procedure 3.

2)Group operation

A)In case that power of the exchanged indoor unit only can be turned on

Turn on power of the exchanged indoor unit only and proceed to Procedure 3.

B)In case that power of the indoor units cannot be turned on individually (Case 1)

a)Remove temporarily the group wire connected to the terminal blocks A and B of the exchanged indoor unit.

b)After connecting the remote controller wire only to the removed terminal block, turn on power of the indoor units and proceed to Procedure 3.

∗When the above methods cannot be used, follow to the two cases below.

C)In case that power of the indoor units cannot be turned on individually (Case 2)

a)Remove all CN41 connectors of the indoor units in the same group except those of the exchanged indoor unit.

b)Turn on power of the indoor units and proceed to Procedure 3.

∗After Procedure 3 operation has finished, be sure to return the temporarily removed group wire or CN41 connector to the original connection.

Indoorunit

Indoorunit

Indoorunit Service P.C. board of

P.C. board

P.C. board

the unit to be changed

(Case 1)

 

A

B

 

 

 

A

B

 

A B

Remove the group wire of the

terminal blocks A and B of the

(Case 2)

Remove CN41 connectors of the indoor units other than the units to be changed in the same group.

 

Group wire

Indoorunit

Indoorunit

P.C. board

P.C. board

 

CN

 

41

A B

A B

Group wire

Remote

changed indoor unit, and then

controller

install the remote controller only.

Indoorunit Service P.C. board of the unit to be changed

A B

Remote controller

110

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Toshiba MMU-AP0181MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0071MH Procedure 2 Exchange of P.C. board for service, 110
Page 109 Page 111

MMU-AP0181MH, MMU-AP0071MH, MMU-AP0091MH, MMU-AP0151MH, MMU-AP0121MH specifications

The Toshiba MMU-AP series, consisting of models MMU-AP0121MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0071MH, and MMU-AP0181MH, represents a significant advancement in the realm of power management and energy efficiency for a variety of applications. These modules are designed to optimize performance while ensuring minimal energy consumption, making them suitable for both commercial and industrial uses.

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In conclusion, the Toshiba MMU-AP series offers a blend of efficiency, adaptability, and advanced technology, making it a valuable asset for various industrial and commercial applications. Its intelligent design and robust features ensure that users can optimize energy use while maintaining high performance and reliability.
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