Mitsumi electronic LMAP03U ユーザーズマニュアル

18

6600

6601

6607

• If it has been 
  confirmed that a unit 
  with the same M-NET 

address is transmitting.

• When discrimination 
  of the polarity of the 
  M-NET transmission 
  wire.

• If there is no response 
  (ACK) from the 
  recipient after a 

transmission.

• If there are two or more 
  units with the same 
  M-NET address at the 
  unit and controller.

• Interrupted power supply, 
  Connectors (CN405, 
  CN45, CN21, CN71).

Damage to transformer 

  (T2).
• Interrupted power supply 
  for M-NET transmission 
  wire.

• If recipient of transmission 
  is LM ADAPTER.
• Defect in transmission 
  line (TB2)between 
  LM ADAPTER.
• Interrupted power 
  LM ADAPTER 
  power supply (TB1).
• Blown fuse (F1) in  
  LM ADAPTER

disconnection on the 

  loose connector 
  (CN605, CN65, CN32, 
   CN33, CN31).
• Damage transformer in 
  LM ADAPTER (T1, T2).

Damage circuit board 

  (L.B, P.B).

• Check that there are no 

duplicate addresses. 
After correcting 
problem, reset power 
supply.

• Check for defects. Once 

corrected, reset the 
power supply.

• Check these areas. 

After correcting 
problem, reset power 
supply.

Error
code

Error content

Symptom

Cause

Checking method and remedy

M-NET 
duplication 
error

M-NET polarity
not set error

No ACK error

7702

7703

7705

Display of trouble

M-NET remote controller,
MA remote controller, 
system controller 

M-NET remote controller, 
MA remote controller, 
system controller 

M-NET remote controller,
MA remote controller, 
system controller or 
building control system

M-NET remote controller, 
MA remote controller, 
system controller

M-NET remote controller, 
MA remote controller, 
system controller

M-NET remote controller, 
MA remote controller, 
system controller

M-NET connection 
error (no connection 
to indoor unit or 
LOSSNAY unit)

M-NET connection
error (no connection
to master system
controller)

DIP SW1-2 is OFF and 
the system controller is 
connected.
DIP SW1-2 is ON and 
the system controller is 
not connected.

Initialization error

Could not connect to 
any indoor units or 
LOSSNAY units.

Initialization of the LM 
ADAPTER failed.

Reset the power supply. 
If the same error occurs 
again, the controller is 
faulty.

Damage in LM ADAPTER.

• M-NET transmission 
  cable is not connected.

• Power supply is not 
  connected to M-NET 
  transmission cable.

• The DIP SW1-2 setting is 
  different to the system 
  configuration.

• Power supply is not 
  connected to indoor unit 
  or LOSSNAY unit.

• M-NET transmission 
  cable is not connected.

• Power supply is not 
  connected to M-NET 
  transmission cable.

• Check these areas. 
 After correcting 
 problem, reset power 
 supply.

• Check these areas. 
 After correcting 
 problem, reset power 
 supply.

6-3 Error code list