Manual

15
HEATER START UP INFORMATION
On M-7 systems, the heater goes through a testing phase
every time it starts up to assure that there is adequate
water flow. This provides sophisticated dry fire and low flow
protection. It can be confusing if you don't know what to
expect. Step by step, here is what happens. (Note that the
timing/temperature details may be slightly different on some
older M7 systems.)
Prior to heating, the pump is run for at least two UÊ
minutes, and then the temperature difference between
the sensors is assessed. It must be 2°F/1.0°C or less for
heating to proceed, otherwise an error is issued.
The heater turns on for 6.5 to 18 seconds (depending UÊ
on heater voltage and wattage). At this point, the heat
indicator on the panel is "solid." During this time the
panel is not immediately responsive.
The heater turns off for 90 seconds, making sure that the UÊ
water flow keeps the temperature rise small and short.
(Abnormal water flows, or lack of water, will produce
a large and/or long temperature rise, and the system
faults in that situation.) At this point, the heat indicator
on the panel may appear to "shimmer" or "dim" (on some
panels this may be less obvious from certain angles and
more obvious from other angles, or in different lighting).
If the dry fire test has passed, heating turns back on to UÊ
heat the spa. The heat indicator on the panel returns
to "solid".
During spa heating, a difference between the sensors UÊ
of 2°F/1.0°C, or perhaps 3°F/1.5°C (at least with 4-6kW
240V heaters), is considered normal. A significantly
higher difference, however, is usually indicative of a
flow problem, and will cause a fault which disables
the heating for at least a minute (and then restarts the
whole above process).
Spa Behavior -- Start-up Information
PRIMING MODE
In Priming Mode, the “Mode” button toggles the ozone on/off
(with a 15-second time-out). This can be useful if you want to
verify ozone generator operation without waiting for a filter
cycle. This feature is not available on smaller panels where
Mode is a multi-button sequence, since such a sequence
exits Priming Mode.
GENERAL FILTER INFORMATION
On any system with a Deluxe panel, the filter times UÊ
and durations are completely programmable from the
topside control panel, and the first filter may not run
for many hours after power-up. If you want the filter
to run sooner, you have to either reprogram the filter or
advance the time to just before the filter start.
On all other systems, the first filter starts 6 minutes after UÊ
power-up and the duration can be chosen (either using
button sequences on the topside control panel or via a
DIP switch) between several preset choices. Note that if
you let Priming Mode exit automatically after 4 minutes,
you have 2 more minutes before the first filter runs after
power-up. Exiting Priming Mode by pressing the “Temp,”
Warm,” or “Cool” buttons, allows up to 6 minutes
available before the first
filter runs.
IMPORTANT INFORMATION: If the filter settings have just
been changed, it may take up to 24 hours for the filter cycle
to reflect the changes. This is especially likely when changing
from a very long filter duration (such as Continuous), to a
short one, or vice versa.
The low-speed pump (on non-circ) and ozone generator UÊ
(if installed) will run during the filter cycles.
The blower runs for 30 seconds at the start of each filter UÊ
cycle. This will maintain water quality in the air channel.
The pumps (other than pump 1 in non-circ, including UÊ
pump 1 in circ) will run for 5 minutes at the start of each
filter cycle.
See manufacturer’s owners manual or reference card for general information on operating the spa, including programming
filters and other settings that are changed from the topside control panel.