Mitsubishi Electric LOSSNAY PZ-25RF8-E Handbook page 60

(4)Troubleshooting 4: The Lossnay operation is disabled or irregular.
Lossnay checklist (Table 4)
Error
No.
1 The fan does not operate.
The fan does not operate
normally.
2 Interlocked operation
with external devices
(air conditioners) does
not occur.
3 Fan will not stop.
Cause
« Connectors for the fan or connectors for the
Lossnay circuit board section are not correctly
connected.
« Power is not supplied to the Lossnay, or power
that does not follow specifications is used.
« When using M-NET, Lossnay group setting is
not performed. (LED2 lights)
« The type of external signal does not match the
connected terminal block (charged, uncharged,
Mr. Slim signal).
« The type of external signal does not match the
pulse input setting (level signal, pulse signal).
« The external device signal is not being input.
« The external device and signal cable wiring is
longer than specified.
12 V DC, 24 V DC:
Uncharged a-contact:
Mr. Slim signal:
« The Delay operation is set with the function
selection of PZ-60DR-E or PZ-41SLB-E, or the
function selection switch (SW5-1) on the
Lossnay circuit board.
« The ON Interlocked or OFF Interlocked is set
with the function selection of PZ-60DR-E or PZ-
41SLB-E, or the function selection switches
(SW5-7, SW5-8) on the Lossnay circuit board.
« When using multiple Lossnay units, the exter-
nal control input signal is connected to a "Sub"
Lossnay.
« In a group of multiple Lossnay units with M-
NET, the external control input signal is con-
nected to a Lossnay unit other than the one
with the smallest address.
« There is a communication error with the
remote controller or MELANS.
« Trial operation switch (SW2-1) on the Lossnay
circuit board is set to ON.
« The TM4 9, 0 output setting switch (SW2-8)
or the TM3 6, 7 output setting switch (SW5-
6) on the Lossnay circuit board is set to ON.
— 60 —
Longer than limitations
of external device
Longer than 500 m
Longer than 500 m
Action
« Check the lead wire connectors
and the Lossnay circuit board
section connectors.
« Check the power supply.
« Check the Lossnay address and
the group setting. (LED2 lights
when not using M-NET. This is
not an error.)
« Check the external signal type
and the external control input ter-
minal (TM2) connection.
« <When using PZ-60DR-E>
Check the external signal type
and the pulse input setting from
the function selection.
<When not using PZ-60DR-E>
Check the external signal type
and the pulse input setting
switch (SW2-2) on the Lossnay
circuit board. (Refer to page 31).
« Check the external device.
« Check the wiring length of the
signal cable.
« Check the delay operation setting
of PZ-60DR-E or PZ41SLB-E,
and the function selection switch
(SW5-1) on the Lossnay circuit
board. (Refer to page 32)
« Check the interlock mode setting
of PZ-60DR-E, PZ41SLB-E, or
the function selection switches
(SW5-7, SW5-8) on the Lossnay
circuit board. (Refer to page 32)
« Connect the external control
input signal to the "Main"
Lossnay.
« Connect the external control
input signal to the Lossnay unit
with the smallest address in the
group.
« Check the remote controller or
MELANS.
« Check the trial operation switch
(SW2-1). (Refer to page 36)
« When SW2-8 or SW5-6 is ON,
the fan will stop 3 minutes after
OFF operation of the remote
controller. (Refer to page 27)