Mitsubishi Electric LOSSNAY LGH-F300RX5-E Handbook page 54

No. Error
8 The damper board does
not operate.
9 Operation monitor out-
put is OFF during opera-
tion.
10 Delay operation does
not work even though
Delay operation is set.
11 Night purge operation
does not work even
though Night purge
operation is set.
12 The fan does not stop
even though the remote
controller is set to stop.
13 The damper board does
not operate correctly.
Cause
The outdoor air temperature is 46.4°F (8°C)
or lower.
The bypass ventilation switching external
input ( CN16 ) is set to ON.
During the night purge operation
Damper board operation is not correct.
Connectors for the thermistor are not cor-
rectly connected.
Connectors for the damper are not correctly
connected.
The trial operation switch ( SW2-1 ) on the
Lossnay circuit board is turned ON.
When the " OPERATION MONITOR " is set
to " 2 " with the PZ-60DR-E function selec-
tion, or when the function selection switch
( SW5-2 ) on the Lossnay circuit board is ON,
because there is operation monitor output
interlocked with the air supply fan, the oper-
ation monitor output will turn OFF when the
outdoor temperature is 14°F (-10°C) or less,
or at the time of air conditioner defrosting.
Pulse input setting is set to ON.
• The night purge conditions have not been
satisfied.
• Lossnay has been started or stopped during
the display of " ( Night purge )" .
• Night purge operation will not be performed
when " CENTRAL " is displayed.
Operation monitor with delay function is set.
( Function selection switch ( SW2-8 or SW5-
6 ) is set to ON )
The switch ( SW5-10 ) setting is incorrect.
─ 54 ─
Action
Check the outdoor air tempera-
ture.
Check the bypass ventilation
switching input ( CN16 ) . ( Refer to
page 27 )
Check the display of the PZ-
60DR-E. (" " is displayed )
Remove the rod, and check
whether the damper board can
be moved manually.
Check the connections of the
lead wire connectors and the
circuit connectors.
Check the connections of the
lead wire connectors and the
circuit connectors.
Check the trial operation switch
( SW2-1 ) on the Lossnay circuit
board. ( Refer to page 30 )
Check the operation monitor out-
put setting with the PZ-60DR-E
function selection, or the function
selection switch ( SW5-2 ) on the
Lossnay circuit board.
( Refer to page 30 and 33 )
<When using PZ-60DR-E>
Check the pulse input setting
from the function selection.
( Refer to page 34 )
<When not using PZ-60DR-E>
Check the setting of the pulse
input switch ( SW2-2 ) on the
Lossnay circuit board.
( Refer to page 30 ) .
• C heck whether these are the
night purge operation conditions.
( Refer to page 28 and 29 )
• When Lossnay has been started
or stopped during the display of
" " , the night purge operation
will not be performed until 1:00 of
the next day.
Check the setting of the function
selection switch ( SW2-8 or SW5-
6 ) . The fan will stop 3 minutes
after the remote controller OFF
operation. ( Refer to page 19 )
Check the switch ( SW5-10 ) setting.
LGH-F300 to F600 types: OFF
LGH-F1200 type: ON
( Refer to page 31 )