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Trouble Mode 4: The Lossnay does not operate or operates irregularly.
Lossnay checklist (Table 4).
Symptom
No.
1
The fan does not operate.
The fan does not operate
normally.
2
Interlocked operation
with external device
(air conditioner) does not
occur.
3
Fan will not stop.
4
Lossnay operates when
main power is turned on.
Cause
« Connectors for the fan connection or connec-
tors for the control circuit section connection
are not secure.
« Power supply is not supplied to the Lossnay, or
power outside specifications is connected.
« Lossnay group setting is not made by using
the M-NET. (LED2 lights)
« The type of external signal does not match the
connected terminal unit (charged, uncharged,
Mr. Slim signal).
« The type of external signal does not match the
pulse input switch (SW2-2) setting (level sig-
nal, pulse signal).
« The external device signal is not being input.
« The external device and signal cable wiring is
longer than specifications
(12V DC, 24V DC:
Uncharged a-contact:
Mr. Slim signal:
« The Delayed Start mode is set at the remote
controller (PZ-41SLB-E) or the function select
switch (SW 5-1) on the Lossnay circuit board.
« The ON Interlocked Operation mode or OFF
Interlocked Operation mode is set at the
remote controller (PZ-41SLB-E) or the function
select switch (SW 5-7,8) on the Lossnay circuit
board.
« When using multiple Lossnay units, the exter-
nal control input signal is connected to a unit
with the "Sub" setting made.
« In a group of multiple Lossnay units with the
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 controller.
« The trial operation switch (SW 2-1) is ON.
« The PZ-41SLB-E is being used.
« By using the M-NET, the power supply ON/OFF
setting is set to ON at the function select switch
(SW 2-6) on the Lossnay circuit board.
« By using the M-NET, the automatic recovery fol-
lowing power supply interruption (refer to page
168) setting is made at the function select
switch (SW 5-4) on the Lossnay circuit board.
Longer than limitations
of external device
Longer than 500 m
Longer than 500 m)
Corrective action
« Check the lead wire connectors
and the control circuit section
connectors.
« Check the power supply. (refer
to page 161)
« Check the Lossnay address and
the group setting (LED2 lights when
not using M-NET. This is no error.)
« Check the external signal type and the
external control input terminal (TM2)
connection. (refer to page 163, 164)
« Check the external signal type and
the pulse input switch (SW2-2)
setting. (refer to page 164)
« Check the external device.
« Check the wiring length of the
signal cable.
« Check the delayed start settings of
the remote controller (PZ41SLB-E)
and the function select switch
(SW5-1). (refer to page 167, 171)
« Check the interlocked operation
mode settings of the remote con-
troller (PZ41SLB-E) and the func-
tion select switch (SW5-7, 8).
(refer to page 168, 171)
« Connect the external control
input signal to the Lossnay set to
"Main." (refer to page 164)
« Connect the external control
input signal to the Lossnay in the
group with the lowest address.
« Check the remote controller or
controller.
« Check the test operation switch
(SW2-1). (refer to page 169)
« When the main power supply is
turned off while the Lossnay is
operating from the remote con-
troller, the Lossnay will resume
operation when the main power is
turned back on (this is no error).
« Check the power supply ON/OFF
setting of the function select switch
(SW2-6). (refer to page 167)
« Check the automatic recovery fol-
lowing power supply interruption
setting of the function select switch
(SW5-4). (refer to page 168)
155
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