Warm
Light
Cool
Time
Mode /Prog Jets 1
Jets 2
Jets 3
Temp Control (80°F - 104°F / 26.0°C - 40.0°C)
The last measured water temperature is constantly displayed.
The water temperature displayed is current only when the
pump has been running for at least 2 minutes.
To display the set temperature, press “Warm” or “Cool” once. To
change the set temp, press a temp button again before the display
stops flashing. After three seconds, the display will stop flashing
and begin to display the current spa temperature.
Jets 1
Press “Jets 1” to turn pump 1 on or off, and to shift between low
and high speeds (if equipped). The low-speed will turn off after
4 hours. High-speed will turn off after 15 minutes. Low-speed
may run automatically at times, during which it cannot be
deactivated from the panel, but high-speed may be operated.
Jets 2/Jets 3 (If equipped)
Press the corresponding button once to turn the device on or off.
The device will turn off after 15 minutes.
Light
Press “Light” to operate the spa light. Turns off after 4 hours.
Setting the Time of Day
When the spa is first powered up, the words SET TIME will flash
on the display. Press “Time,” then “Mode/Prog,” then “Warm” or
“Cool.” The time will begin changing in one-minute increments.
Press “Warm” or “Cool” to stop the time from changing. Press
“Time” to confirm.
Initial Start-up
Your spa will enter Priming Mode ( ) when it is energized.
During Priming Mode, press “Jets” button(s) repeatedly and
be sure all pumps are free of air. Priming Mode lasts less than
5 minutes. Press “Warm” or “Cool” to exit. After Priming Mode,
the spa will run in Standard Mode (see Mode/Prog section).
May Manufacturing MVS504DZ-MGS504DZ Operation Guide
This document covers MVS504DZ and MGS504DZ with panel MAY800D.
Mode/Prog
Mode is changed by pressing “Warm” or “Cool,” then pressing
“Mode/Prog” button.
Standard Mode maintains set temperature and the STANDARD icon
will be displayed.
Economy Mode heats the spa to the set temperature only during
filter cycles. will display when water temp is not current, and
will alternate with water temp when the pump is running. The
ECONOMY icon will be displayed.
Sleep Mode heats the spa to within 20°F/10°C of the set
temperature only during filter cycles. will display when water
temp is not current, and will alternate with current water temp
when the pump is running.
Preset Filter Cycles
The first preset filter cycle starts at 8:00 AM and ends at
10:00 AM. The second preset filter cycle starts at 8:00 PM and
ends at 10:00 PM.
For non-circ systems, low-speed pump 1 and the ozone generator
(if installed) run during filtration.
For circulation systems, the circ pump and the ozone generator
(if installed) run during filtration and otherwise only as needed
to determine and maintain temperature. At the beginning of
each filter cycle, all other equipment will run briefly to purge
the plumbing.
Optional Filter Cycle Programming
You are not required to change the filter cycles, but if you wish
to, press “Time,” “Mode/Prog,” “Mode/Prog” within 3 seconds.
SET START FILTER 1 (AM) will appear. Press “Warm” or “Cool” to
reset the filter start time.
Press “Mode/Prog” to see SET STOP FILTER 1 and adjust the time
with “Warm” or “Cool” as done above. Press “Mode/Prog” to see
SET START FILTER 2 (PM) and proceed as above. Press “Mode/Prog”
to see SET STOP FILTER 2 and proceed as above.
Press “Mode/Prog” to confirm.
The pump responsible for heating and filtration (pump 1 low-speed
on non-circ system, or the circ pump on circ systems) will be
referred to simply as the pump.
In multi-button sequences, if the buttons are pressed too quickly in
the sequence, they may not register.
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