Mitsubishi Electric LGH-F300RVX-E Handbook page 21

No. Problem
12 Actual fan speed
of the Lossnay unit
differs from the fan
speed set with the
remote controller.
13 The Night-purge
operation cannot be
stopped with PZ-
61DR-E.
14 Even though the
Night-purge is set,
Lossnay does not
perform the Night-
purge operation.
15 The Night-purge
operation stops in
halfway through.
Factor
The signal is input to the fan
speed input (CN17).
The signal is input to the fan
speed switching input (CN26
[4] [5]).
Function setting (No. 8) of
PZ-61DR-E "Max. fan speed
setting during the first 30
minutes" is enabled.
The indoor negative pres-
sure setting or the indoor
positive pressure setting is
set.
Usual start/stop button oper-
ation cannot stop the Night-
purge operation.
Conditions of the Night-
purge are not satisfied.
The Night-purge schedule is
not set.
The operating condition
became outside the Night-
purge conditions.
The Lossnay remote control-
ler or the system controller
was operated to start or stop
the operation of the Lossnay
unit.
A controller other than PZ-
61DR-E or a controller that
is not supporting Night-purge
is operated to change the
ventilation mode.
Check the fan speed input (CN17).
(See the Lossnay technical manual.)
Check the fan speed switching input (CN26 [4] [5]).
(See the Lossnay technical manual.)
Lossnay operates at fan speed 4 for 30 minutes
when operation starts.
(See the Lossnay technical manual.)
Check the function selection switches (SW2-4 and
2-5) on the circuit board or the function settings (No.
6 and 7) of PZ-61DR-E.
(See the Lossnay technical manual.)
Press the start/stop button once to display the op-
eration screen, and then press the start/stop button
again.
When the Night-purge conditions such as the indoor/
outdoor temperature are not satisfied, Lossnay does
not perform the Night-purge operation.
For details, see the Lossnay technical manual.
Check the setting of PZ-61DR-E or the system con-
troller that supports Night-purge operation.
For details, see the Lossnay technical manual.
When the operating condition becomes outside the
Night-purge conditions, the Night-purge operation
ends.
For details, see the Lossnay technical manual.
When the start or stop operation is performed during
the Night-purge operation, the Night-purge operation
ends.
When a controller other than those supporting Night-
purge is operated to change the ventilation mode,
the system performs the normal ventilating operation.
(See the Lossnay technical manual.)
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Corrective action