SUV M-7 Control Reference Card
 

Initial Start-up

When your spa is first actuated, it will go into Priming mode, indicated by "Pr". Please see the M-7 Installation Instruction Manual
for complete instructions on Power-up and Pump Priming.
  The Priming mode will last for less than 5 minutes (press "Temp" or
"Set" to skip Priming Mode) and then the spa will begin to heat the spa and maintain the water temperature in the Standard mode.
 

Temp/Set (80F - 104F / 26C - 40C)

The start-up temperature is set at 100F/37C. The last
measured temperature is constantly displayed on the LCD.

Note that the last measured spa temperature displayed
is current only when the pump has been running for at
least 2 minutes.


The start-up temperature is set at 100F/37C. The last
measured temperature is constantly displayed on the LCD.

Note that the last measured spa temperature displayed
is current only when the pump has been running for at
least 2 minutes.


To display the set temperature, press the "Temp" or "Set"
pad once.

To change the set temperature, press the pad a second time
before the LCD stops flashing. Each press of the "Temp" or
"Set" pad will continue to either raise or lower the set
temperature.

If the opposite direction is desired, release the pad and let the
display revert to the current water temperature. Press the pad to display the set temperature, and again to make the temperature change in the desired direction.

After three seconds, the LCD will stop flashing and display the
current spa temperature.
 

Jets
Touch the "Jets" button once to activate the low speed of the
pump and again for the high speed.  Press the "Jets" button
again to turn off the pump.   If left running, the low speed of
the pump will automatically turn off after 4 hours, and the high
speed will automatically turn off after 15 minutes.   The low
speed of the pump runs when when the blower is on. It may
also activate for at least 2 minutes every 30 minutes to detect
the spa temperature and then to heat to the set temperature if
needed, depending upon mode.  When the low speed turns on automatically, it cannot be deactivated from the panel; however,
the high speed may be started.

Light
Press the "Light" button to turn the light on and off. If left on,
the light automatically turns off after 4 hours.

 

 

Blower
This button is used to turn the blower on and off.   If  left on, the blower automatically turns off after 15 minutes.

Mode
Mode is changed by pressing the "Temp" or "Set" button, then
pressing the "Light" button.

Standard Mode is programmed to maintain the desired
temperature.  Note that the last measured spa temperature
displayed is current only when the pump has been running for at
least 2 minutes.   "St" will be displayed momentarily when you
switch into Standard Mode.

Economy Mode heats the spa to the set temperature only
during filter cycles.   "Ec" will display solid when temperature
is not current, and will alternate with temperature when
temperature is current.

Sleep Mode heats the spa to within 20F of the set temperature
only during filter cycles.   "SL" will display solid when
temperature is not current, and will alternate with temperature
when temperature is current.

Preset Filter Cycles
The first filter cycle begins 6 minutes after the spa is energized.
The second filter cycle begins 12 hours later.   Filter duration is programmable for 2, 4, 6, 8 hours or for continuous filtration
(indicated by "FC").  The default filter time is 2 hours.
To program, press "Temp" then "Jets."  Press "Temp" or "Set" to adjust.  Press "Jets" to exit programming.

The blower purges for 30 seconds at the beginning of each filter
cycle. The low speed of the pump runs during filtration and the
ozone generator (if installed) will be enabled.

Freeze Protection
If the temperature sensors detect a drop to below 44F/6.7C
within the heater, the pump and blower will automatically
activate to provide freeze protection.  The equipment stays on
until 4 minutes after the sensors detect that the spa temperature
has risen to 45F/7.2C or higher.  In colder climates, an
optional additional freeze sensor may be added to protect against
freeze conditions that may not be sensed by the standard sensors.
Aux freeze sensor protection acts similarly except with the
temperature thresholds determined by the switch and without a
4-minute delay in turnoff.  See your dealer for details.

 

Jets 2 (optional on VS501/502 or GS501/502)
If your system has a pump 2 installed instead of a blower, it
behaves exactly like a blower would.

 

 

Diagnostic Messages

Message 

Meaning

Action Required

 


No message on display.
Power has been cut off to the spa.
 

The control panel will be disabled until power returns. 
Spa settings will be preserved until next power up.


 

Temperature unknown. After the pump has been running for 2 minutes, the
temperature will be displayed.
 

 

"Overheat" - The spa has shut down. One of
the sensors has detected 118F at the heater.
DO NOT ENTER THE WATER.  Remove the spa cover
and allow water to cool.  Once the heater has cooled, reset by
pushing any button.  If spa does not reset, shut off the power to
the spa and call your dealer or service organization.
 

"Overheat" - The spa has shut down. One of
the sensors has detected that the spa water is
110F.

 
DO NOT ENTER THE WATER.  Remove the spa cover
and allow water to cool.  At 107, the spa should automatically
reset.  If spa does not reset, shut off the power to the spa and call
your dealer or service organization.
 


 

"Ice" - Potential freeze condition detected.

 
No action required.  The pump and blower will automatically
activate regardless of spa status.
 



 

Spa is shut down.  The sensor that is plugged
into the Sensor "A" jack is not working.
If the problem persists, contact your dealer or service
organization.  (May appear temporarily in an overheat situation
and disappear when the heater cools.)
 


 

Spa is shut down.  The sensor that is plugged
into the Sensor "B" jack is not working.
If the problem persists, contact your dealer or service
organization.  (May appear temporarily in an overheat situation
and disappear when the heater cools.)
 

Sensors are out of balance.  If alternating with
spa temperature, it may just be a temporary
condition.  If flashing by itself, spa is shut down.

If the problem persists, contact your dealer or service
organization.

 


 

A significant difference between temperature
sensors has been detected.  This could indicate a
flow problem.
Check water level in spa. Refill if necessary.  If the water level is
okay, make sure the pumps have been primed.   If problem
persists, contact your dealer or service organization.
 

 

Persistent low flow problems.   (Displays on
the fifth occurrence of "HL." message within
24 hours.) Heater is shut down, but other spa
functions continue to run normally.
 

Follow action required for "HL." message.   Heating capability of
the spa will not reset automatically; you may press any button to reset.

Possible inadequate water, poor flow, or air
bubbles in detected in the heater.   Spa is shut
down for 15 minutes.

Check water level in spa.  Refill if necessary.  If water level is
okay, make sure the pumps have been primed.  Press any button
to reset, or this message will automatically reset within
15 minutes.  If problem persists, contact your dealer or service
organization.
 

 

Inadequate water detected in heater.  (Displays on
third occurrence of "c/r" message.)  Spa is
shut down.

Follow action required for "dr" message.  Spa will not
automatically reset.  Press any button to reset.
 



Warning! Shock Hazard! No User Serviceable Parts.
Do not attempt service of this control system.   Contact your dealer or service organization for assistance.  Follow all owner's manual power
connection instructions.  Installation must be performed by a licensed electrician and all grounding connections must be properly installed.

 

OCR and picture enhancement by: www.h2oco.com   

P/N DCSUV Rev. B   04/24/03