Mitsubishi Electric Lossnay LGH-RX5-E Series Manual page 56

10.2.3 Troubleshooting 3 : The remote controller operation is disabled or irregular
Checklist for PZ-60DR-E or PZ-41SLB-E (Table 3-1)
Error
No.
1 Nothing displays on the
LCD.
2 Starts or stops, or the
display changes, by
itself.
3 Displays an error code
that is not in the check
list.
4 Cannot stop the Lossnay
with the remote controller.
("CENTRAL" is displayed)
5 Cannot stop the Lossnay
with PZ-60DR-E. ("24HR
VENTILATION" is displayed).
6 Cannot switch fan speed
with the remote con-
troller.
C-56
Cause
« Transmission cable is connected to the wrong
terminal block.
« No Lossnay unit is set to "Main".
« Power is not supplied to Lossnay.
« Power that does not follow specifications is
used.
« Transmission cable is not securely connected.
« The length of the transmission cable wiring is
longer than specified (longer than 500 m).
« Multiple transmission cables are wired using
multi core cables.
« Transmission cable and power supply cable
are too close.
« Liquid crystal display characters on the remote
controller are missing.
« Poor return action of the remote controller buttons.
« Operation of the remote controller has been
prohibited by MELANS.
« "INTERLOCK MODE" is set to "oUT" (external
input given priority).
« Remote/local switching (CN32) is set to
"Remote."
« 24-hour ventilation is set to "on" with the PZ-
60DR-E function selection.
« High/Low/Extra Low fan speed switching exter-
nal input (CN16) is ON.
« When using PZ-60DR-E, "POWER VENT
START" is set to "on" with the function selec-
tion of the remote controller.
« When not using PZ-60DR-E, the function
selection switch for "Power supply/exhaust
when operation starts" (SW2-3) on the
Lossnay circuit board is set to ON.
« When using PZ-60DR-E, the supply fan speed
setting and the exhaust fan speed setting are
set to "L" with the function selection of the
remote controller.
« When not using PZ-60DR-E, the function selection
switches for "Supply fan fixed at Low speed", and
"Exhaust fan fixed at Low speed" (SW2-4, SW2-5)
on the Lossnay circuit board are set to ON.
« In a mixture of the LGH-15 to 100 types and the
LGH-150 and 200 types, the 150 and 200 types
are set to "Main". (Extra Low fan speed operation
is not available.)
Action
« Check the transmission cable con-
12
nection. (TM4 1, 2 for the transmis-
sion cable from the remote controller)
« Turn off the main power supply and
set the Main/Sub selection switch
(SW1) (first unit to "Main", and sec-
ond and following units to "Sub").
« Check the power supply to Lossnay.
« Check the power supply.
« Check the transmission cable connection.
« Check the length of the trans-
mission cable wiring.
« Using suitable cables, wire the
transmission cables so that they
are separated from one another.
« Wire the transmission cable at least 5
cm away from the power supply cable.
« Replace the remote controller.
« Replace the remote controller.
« Check the setting of the
MELANS.
« Check the interlock mode set-
ting. (Refer to page C-76)
« Check the remote/local switching
(CN32). (Refer to page C-71)
« Check the 24-hour ventilation
setting with the PZ-60DR-E func-
tion selection. (Refer to page C-89)
« Check the High/Low/Extra Low
fan speed switching input (CN16).
(Refer to page C-70 and C-73)
« Check the setting of "power sup-
ply/exhaust when operation
starts" with the PZ-60DR-E func-
tion selection. (Refer to page C-90)
« Check the function selection
switch (SW2-3).
(Refer to page C-73)
« Check the supply fan speed set-
ting and the exhaust fan speed
setting with the PZ-60DR-E func-
tion selection. (Refer to page C-90)
« Check the function selection
switches (SW2-4, SW2-5).
(Refer to page C-73)
« Set the LGH-15 to 100 types to
"Main" and the LGH-150 and
200 types to "Sub".
(Refer to page C-69)