Mitsubishi Electric LOSSNAY PZ-25RF8-E Handbook page 61

Error
No.
4 Lossnay operates when
the main power is turned
on.
5 Takes in air from out-
doors during interlocked
operation with a Mr. Slim
or a City Multi, but supply
air fan does not stop
when defrosting.
6 The supply air fan and
exhaust air fan both peri-
odically stop operating.
7 Fan speed will not
change.
Cause
« When using PZ-60DR-E, "RECOVERY SET-
TING" is set to "on" or "AUTo" with the function
selection of the remote controller.
« When not using PZ-60DR-E, the function
selection switches (SW2-6 or SW5-4) on the
Lossnay circuit board are set to ON.
« When using PZ-41SLB-E, the main power sup-
ply was turned off during operation.
« The outdoor air intake setting of the PAC
indoor unit or the PAC remote controller is not
enabled.
« In a system that Lossnay has duct connections
and interlocked with Mr. Slim or City Multi
indoor units, when "EA SETTING DEFROST"
is set to "oFF" with PZ-60DR-E, or when the
function selection switch (SW5-3) on the
Lossnay circuit board is ON, the fans will stop
during air conditioner defrosting.
« 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.
« Trial operation switch (SW2-1) on the Lossnay
circuit board is 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.)
— 61 —
Action
« Check the power supply
ON/OFF/AUTO setting with the
PZ-60DR-E function selection.
(Refer to page 41)
« Check the function selection
switches (SW2-6 or SW5-4)
(Refer to page 38)
« When using PZ-41SLB-E, the
operation prior to switching off the
power will return when the main
power supply is turned on. Switch
off the main power supply approx-
imately 10 seconds after Lossnay
stop with the remote controller.
« Set the outdoor air intake to
"ON" with the indoor unit or the
PAC remote controller.
« Check the exhaust operation
setting for air conditioner defrost-
ing with the PZ-60DR-E function
selection, or the function selec-
tion switch (SW5-3). (Refer to
page 38 and 42)
« Check the High/Low/Extra Low
fan speed switching input (CN16).
(Refer to page 33 and 34)
« Check the setting of "power sup-
ply/exhaust when operation
starts" with the PZ-60DR-E func-
tion selection. (Refer to page 41)
« Check the function selection
switch (SW2-3).
(Refer to page 38)
« Check the supply fan speed set-
ting and the exhaust fan speed
setting with the PZ-60DR-E func-
tion selection. (Refer to page 41)
« Check the function selection
switches (SW2-4, SW2-5).
(Refer to page 38)
« Check the trial operation switch
(SW2-1). (Refer to page 38)
« Set the LGH-15 to 100 types to
"Main" and the LGH-150 and
200 types to "Sub".
(Refer to page 39)