Mitsubishi Electric PXZ-5F85VG Manual De Instalación página 16

4-5. HOW TO SET LOW STANDBY POWER MODE
Use of the low standby power mode is recommended when none of the indoor
units listed in Table 1 or Table 2 is connected to the outdoor unit. The low
standby power mode can be set with the dip switch (SW1) and the jumper
connector (SC751).
• Before turning on the breaker at first time, settings for dip switch (SW1) and
jumper connector (SC751) are necessary on the outdoor control P.C. board.
• It is recommended to activate the low standby power mode when none of the
indoor units listed in Table 1 or Table 2 is connected.
Note:
• Units come with low standby power mode deactivated as factory setting.
• When connecting one or more indoor units listed in Table 1 and Table 2, the
outdoor unit does not work at "activated low standby power mode".
• In the event that SC751 is missing, outdoor unit will not work.
• Activate the P.C. board setting by turning ON the breaker.
To activate low standby power mode:
Connect SC751 to CN750.
Set the 2 of SW1 to ON.
en
To deactivate low standby power mode:
Connect SC751 to CN751.
Set the 2 of SW1 to OFF.
Table 1: List of the target models
Type
Wall-Mounted
1way-cassette
4way-cassette
Ceiling-Concealed
Ceiling-Suspended
Floor-Standing
4-6. TEST RUN
• Test runs of the indoor units should be performed individually. See the installation manual coming with the indoor unit, and make sure all the units operate properly.
• If the test run with all the units is performed at once, possible erroneous connections of the refrigerant pipes and the indoor/outdoor unit connecting wires cannot be
detected. Thus, be sure to perform the test run one by one.
About the restart protective mechanism
Once the compressor stops, the restart preventive device operates so the compressor will not operate for 3 minutes to protect the air conditioner.
Wiring/piping correction function
This unit has a wiring/piping correction function which corrects wiring and piping combination. When there is possibility of incorrect wiring and piping combination,
and confirming the combination is difficult, use this function to detect and correct the combination by following the procedures below.
Make sure that the following is done.
• Power is supplied to the unit.
• Stop valves are open.
Note:
During detection, the operation of the indoor unit is controlled by the outdoor unit. During detection, the indoor unit automatically stops operation. This is not a mal-
function.
The wiring/piping correction function does not operate when the indoor unit (Cylinder unit / Hydrobox / DHW tank) is connected.
Procedure
Press the piping/wiring correction switch (SW871) 1 minute or more after turning
on the power supply.
• Correction completes in 10 to 20 minutes. When the correction is completed,
its result is shown by LED indication. Details are described in the following
table.
• To cancel this function during its operation, press the piping/wiring correction
switch (SW871) again.
• When the correction completed without error, do not press the piping/wiring
correction switch (SW871) again.
When the result is "Not completed", press the piping/wiring correction switch
(SW871) again to cancel this function. Then, confirm the wiring and piping
combination in a conventional manner by operating the indoor units one by one.
• The operation is done while the power is supplied. Make sure not to contact
parts other than the switch, including the P.C. board. This may cause electric
shock or burn by hot parts and live parts around the switch. Contacting the
live parts may cause P.C. board damage.
• To prevent electronic control P.C. board damage, make sure to perform static
elimination before operating this function.
• This function does not operate when the outside temperature is 0°C or below.
14
SC751 SW1
ON
CN750
1 2 3 4 5 6
ON
CN751
1 2 3 4 5 6
Table 2: List of the target models
Model name
MSZ-AP**VF Cylinder unit
MLZ-KP**VF
SLZ-M**FA*
DHW tank
PEAD-M**JA(L)*
SEZ-M**DA(L)*
PCA-M**KA*
SFZ-M**VA*
CN750
CN751
MODE
Activated
Factory setting
Deactivated
Type Model name
E*ST**D-*M2/6/9*D
Hydrobox E*SD-*M2/6/9*D
A DHW tank specified by
MITSUBISHI ELECTRIC
LED indication during detection:
LED1
(Red)
Lit
Result of piping/wiring correction function
LED1
(Red)
Lit
Once
Other indications
SW871
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
SC751
LED2 LED3
(Yellow) (Green)
Lit Once
LED2 LED3
Result
(Yellow) (Green)
Completed
Not lit Lit (Problem corrected or
normal)
Not completed
Once Once
(Detection failed)
Refer to "SAFETY PRE-
CAUTIONS WHEN LED
BLINKS" located behind
the service panel.
SW1
SW2