Service Manual

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Error
Code
LED1
(green)
LED2
(red)
Symptom Cause Corrective action
6606
3
blinks
Transmission/
reception error
(communica-
tion error with
transmission
processor)
Faulty connection of the M-NET
transmission cable
Check the items described in (1)
[2].
• Wiring was performed with power
still supplied to the M-NET trans-
mission cable.
• Accidental communication error
Restart the system after complet-
ing wiring.
If the error re-occurs, check for
noise on the transmission cable.
If the above does not correct the
problem, replace the Lossnay con-
trol circuit board.
Malfunction of the unit (*3) where an
error occurs
Check the unit (*3) where the error
occurs.
6607
8
blinks
Transmission/
reception error
(no ACK error)
The power of the Lossnay unit is not
ON.
Check the power of the Lossnay
unit.
The Lossnay address was changed. Check the Lossnay address.
PZ-62DR-EA is connected to the ter-
minals (TB5 [A] [B]).
Connect PZ-62DR-EA to the termi-
nals (TM4 [1] [2]).
(See the Lossnay
Operating/Installation Instructions or
PZ-62DR-E Instruction Book.)
6608 8
blinks
Transmission/
reception error
(no response
error)
Multiple M-NET transmission cables
are wired using multicore cables.
Using the applicable cable, wire
the transmission cable away from
one another.
The M-NET transmission cable is not
securely connected.
Check the transmission cable
connections.
The wiring length of the M-NET trans-
mission cable is longer than specified.
• Max. extension: 219 yd. (200 m)
• Total extension: 547 yd. (500 m)
Check the wiring length of the
transmission cable.
PZ-62DR-EA is connected to the ter-
minals (TB5 [A] [B]).
Connect PZ-62DR-EA to the termi-
nals (TM4 [1] [2]).
(See the Lossnay
Operating/Installation Instructions or
PZ-62DR-E Instruction Book.)
6801 9
blinks
PZ-43SMF-E
communica-
tion error
Multiple PZ-43SMF-E transmission
cables are wired using multicore
cables.
Using the applicable cable, wire
the transmission cable away from
one another.
The power supply cable is too close
to the PZ-43SMF-E transmission
cable.
Wire the power supply cable at
least 2 in. (5 cm) away from the
transmission cable.
Faulty connection of the
PZ-43SMF-E transmission cable
Check the transmission cable
connections.
The wiring length of the PZ-43SMF-E
transmission cable is longer than
specified (219 yd. (200 m) or more).
Check the wiring length of the
transmission cable.
PZ-43SMF-E is connected to the ter-
minals (TB5 [A] [B]).
Connect PZ-43SMF-E to the termi-
nals (TM4 [1] [2]).
(See the Lossnay
Operating/Installation Instructions or
PZ-62DR-E Instruction Book.)
(*3) This refers to devices assigned an address number in MELANS such as the Lossnay unit, City Multi indoor
unit, City Multi outdoor unit, or system controller.