Error Code List - Mitsubishi Electric LMAP02-E Installation Manual

6-3 Error code list

Error
Error content
code
6600 M-NET duplex
error
6601 M-NET polarity
not set error
No ACK error
6607
Symptom
• 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.
Cause
• If there is 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-AP.
• Defect in transmission line
(TB2)between LM-AP.
• Interrupted power LM-AP power
supply (TB1).
• Blown fuse (F1) in LM-AP
disconnection on the loose connector
(CN605, CN65, CN32, CN33, CN31).
• Damage transformer in LM-AP(T1, T2).
Damage circuit board (L.B, P.B).
17
Countermeasure
• 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.