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Page 21 of 30
Mitsubishi Electric PAC AH…AHU Controller
Remove the access covers of the PAC-AH…AHU Controller and check that the dip
switch settings are correct for the controller. These need to be set as follows:
1
2
3
4
5
6
ON
OFF
SW2 (P100)
1
2
3
4
ON
OFF
SW7
1
2
3
4
5
ON
OFF
SW4
1
2
3
4
5
6
ON
OFF
SW3
7
8
9 10
1
2
3
4
5
6
ON
OFF
SW1
7
8
9 10
1
2
3
ON
OFF
SW8
VRF PHV1000DXE HO
1
2
3
4
5
6
ON
OFF
SW2 (P125)
VRF PHV1500DXE LO
1
2
3
4
5
6
ON
OFF
SW2 (P140)
VRF PHV2000DXE LO
1
2
3
4
5
6
ON
OFF
SW2 (P200)
VRF PHV2000DXE HO
VRF PHV1500DXE HO
Black rectangle indicates
moveable head of dip switch
These settings are the same for PAC-AH…
M-G
and PAC-AH…
M-H
AHU Controllers.
Starting the System
Carry out a final inspection to ensure that all wiring is in accordance with the wiring
diagram on Page 14 for a PAC-AH…
M-G
or Page 15 for a for PAC-AH…
M-H
and that
all connections have been properly made. Ensure that the refrigerant system is
complete, there are no leaks and there is sufficient charge of refrigerant R410A. Switch
on the electrical supply to the compressor unit and other City Multi system components.
Wait 30 seconds and switch on the electrical supply to the air curtain at the local
isolator. The system will boot-up and when the screen on the PAR-21MAA Remote
Controller becomes active it will repeat the message “PLEASE WAIT”. After several
minutes when the PLEASE WAIT message has stopped the system is ready to start.
DANGER:
Beware of Fans Starting! Turn the air curtain on using the ON/OFF Button on
the PAR-21MAA Remote Controller and the air curtain fans will start straight away.
Switch the Mode Button on the PAR-21MAA to heating mode and adjust the target
temperature to 28°C maximum setting using the
▲
TEMP Button. If the 3-Speed fan
switch is installed check that the fans run at Low speed, Medium speed and High speed
by operating the slider switch. Check there is no mechanical noise coming from the fans
at each of the three fan speeds and that all fans are working. If the 3-Speed fan switch
is not to be installed a wire link will have been fitted to the fan speed terminals on the air
curtain. Set the wire link to one of the three fan speeds (LOW, MED or HIGH)
appropriate to the site conditions (see also Page 17).
Check Heating and Cooling Performance
In heating mode check that the air stream from the discharge grille warms up across the
whole length of the air curtain after approximately 20 minutes of operation and that the
air stream reaches right down across the doorway with the door open or closed. If
necessary the aluminium vanes of the discharge grille can be angled either inwards or
outwards if this gives better penetration/warming of any incoming draughts. The fan
speed can also be adjusted (High, Medium or Low) to suit the conditions. If an optional
