McQuay MDS030A Design & Installation Guide

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Design & installation Guide For McQuay MDS Multi System
● Temp unit setting
There is a switch on the PCB board. When switch OP1 is ON, the unit is ℃; when it is
OFF, the unit is Alternate method is as follows: Press“fan”key and last for 5 seconds in
the normal condition, the temp unit setting will be successful and there will be a buzzer to
indicate.
● Real time setting
Press“CLK”to enter, the first time is week setting and indicate its icon, press “△”or
“ ” to adjust the week from Sunday to Saturday while the real time does not change. If
there is no press on any key within 5 seconds, the unit will exit from the real time setting
and back to the normal status. If you press“CLK”one more time within 5 seconds, the
setting will be OK and it is the real time setting icon, as well as the light is twinkling. At this
time, you can press “△” to increase the hour while press “ ” to increase the minute.
If there is no press on any key within 5 seconds, the unit will exit from the real time setting
and the time setting is valid. If you want to confirm the setting, you need to press“CLK”
one more time. If any other key is press during the setting, the system will exit and back
to the normal condition without saving
● Mode setting
When the unit is in off status, you can press “mode”to enter and the current mode is
twinkling. The mode will be changed when you press “mode” one more time. The mode
changing sequence is as follows:
When outdoor unit is OFF:
Heat pump: Cooling ,heating, air supply, dehumidifying, cooling
Cooling only: Cooling, air supply, dehumidifying, cooling
When outdoor is in cooling condition: Cooling, air supply, dehumidifying, cooling
When outdoor is in heating condition: Heating, air supply, heating
Note: In one system, the follows are not available: some units are in cooling condition while the
other is in heating condition.
● Air flow setting
In normal condition, when the“fan”key is pressed, the air flow will be changed as the
following sequence: High, auto, low, medium, high. When the unit is in air supply condition,
there is no “auto”function.
● Sleep
Press “sleep” key, the icon will be ON or OFF.
● Setting of auto restart after power failure
There is a switch on the PCB board to fulfill the setting of auto restart after power failure.
When OP2 is set “ON”, then this function is active and the icon is shown on the LCD.
● Manual defrost
When the unit runs in heating mode condition, press “Heater” key and last for 5 seconds,
you will enter “manual defrost mode” and “Defrost mode” is shown on the LCD. When
it is auto defrost, “Defrost mode” is also shown on the LCD and it will disappear when the
defrost finishes.

McQuay MDS030A Specifications

General

Brand	McQuay
Model	MDS030A
Category	Air Conditioner
Language	English