McQuay MDS030A, Service Manual

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Service Manual SM-MDS_(ii) 27
8. Swing Setting

Press “SWING” key to active swing function. “SWING” will display on LCD.
9. Sleep Setting

Press “SLEEP” key, “SLEEP” will display on LCD, which means this function is active.
10. Indoor unit lock/unlock

Press “UNIT No.” key to enter the unit setting, then press “▲” or “
▼
” to choose the unit number to be set
or choose “_ _” for group setting and press “ENTER” to confirm. After that, press “SLEEP” key 5s to lock
the chosen unit, the symbol “
” will display on LCD panel, any operation by LCD panel or remote
controller is invalid.

To unlock the unit, press
“SLEEP” key 5s, the symbol “ ” will disappear.
11. Real Time Clock Setting

Press “CLK” to enter, firstly is “week setting”; press “▲” or “ ▼ ” to change from Sunday to Saturday. If
there is no any press for 5s on any key, it will exit to the displaying status.

Press “CLK” again is the “CLOCK SET” icon will display and the current real time clock is twinkling. At
this time, press “▲” to increase the hour, press “
▼
” to increase minutes
，
if there is not any press for 5s,
it will exit without saving the changed real time. If you want to confirm the new setting, you need to press
“CLK” once again within 5s.

During the setting process, only “▲”, “ ▼ ” and “CLK” are valid. If other key is press, it will exit to the
normal status.
12. Timer Setting
A) Single Timer Setting

Single timer setting: It is active only on the same day that timer set when power on. It is inactive when
timer is set at AM 00:00. It can be set at AM 00:00 if you want to cancel some timer setting.

Press “TIMER” key for 5s, enter single timer setting (When the unit is ON, it can only be set to TIMER
OFF; When the unit is OFF, it can only be set to TIMER ON), the “TIMER SET” will
display on LCD panel, press “▲” to set hour and press “▼”to set minute, press “TIMER” to finish the
single timer setting.
B) Week Timer Setting

Week timer setting: Include total 28 on/off timers, 7 days every week and 4 timers every day.

Press “TIMER”
，
“WEEK SET” and “TIMER SET” will display on the left and bottom of LCD panel, press
“▲” or “▼” to select a day (Sunday to Saturday), press “TIMER” again, the day is selected, the timer’s
states of the selected day will display on LCD Panel.

Enter first timer setting, the timer ON or OFF icon will display on the left and bottom of LCD panel, the
timer sequence number “1” will display on the top of LCD, press “▲”or “▼” to select timer sequence
number, press “TIMER”, the timer sequence number is selected.

Enter timer ON and timer OFF setting
, press “▲” or “▼” to select timer ON or timer OFF, “TIMER ON” or
“TIMER OFF” is twinkling, Press “TIMER”, timer ON or timer OFF is selected.

Enter timer setting, “TIMER SET” and “CLOCK SET” will display on the left and bottom of LCD panel,
press “▲” to set hour and press “▼” to set minute, press “TIMER” again to finish setting and enter next
timer setting, repeat above procedures to finish others timer setting.

Press “SWING” for 5s, all week timer setting in EEPROM will be deleted.

Exit timer setting: If there is no press on any key within 5s or press any key except
“▲”, “▼”, “TIMER”
and “ON/OFF” key, it will exit the timer setting.
13. Lock/unlock LCD Panel

Press “HEATER” and “SLEEP” key for 5s, the symbol “ ” will twinkles on LCD panel, MC303 is locked.
Any key of MC303 is invalid until
“HEATER” and “SLEEP” key is pressed for 5s again.

While LCD panel is locked, MC303 still checks and displays each indoor’s unit status.
Remark: Timer is set to all indoor units. Individual
indoor unit’s timer is unavailable.
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