Page 33
For HELP, call 727.573.9611
MESSAGE MEANING
ACTION REQUIRED
SnA
SA
Sensor A is not
working correctly.
Hot tub is shut
down.
Check the sensor "A" plug connection to
circuit board. The problem may appear
temporarily in an overheat situation and
disappear when the heater cools. If the
problem persists, contact service.
SnB
SB
Sensor B is not
working correctly.
Hot tub is shut
down.
Check the sensor "B" plug connection to
circuit board. The problem may appear
temporarily in an overheat situation and
disappear when the heater cools. If the
problem persists, contact service.
SnS
Sn
Sensors are out of
balance.
If this alternates with the temperature, it may
be temporary. If the display shows only this
message (periodically blinking), the hot tub
is shut down .If the problem persists, contact
service.
HFL
HL
A substantial
difference between
sensors was
detected (possible
flow problem).
Check water level in hot tub and add water if
necessary. Be sure that slide-valves are
open. Make sure the pump is primed and
has power. If the problem persists, contact
service.
LF
Low Flow
–
persistent problem.
Displays after the
fifth occurrence of
the "HL" message
within 24 hours.
Heater shuts down
but other hot tub
functions run
normally.
Heating ability of the hot tub will not reset
automatically; press any button to reset.
dr
Inadequate water,
poor flow, or air
bubbles detected in
the heater. Hot tub
is shut down for 15
minutes.
Check the water level and add water if
necessary. Be sure that slide-valves are
open. Make sure the pump is primed and
has power. Press any button to reset
(automatically reset within 15 minutes). If the
problem persists, contact service.
drY
dy
Inadequate water
detected in heater.
Displays on third
occurrence of "dr"
message. Hot tub
is shut down.
Check water level in hot tub. Add water if
necessary. Be sure that slide-valves are
open. Make sure the pump is primed and
has power. Press any button to reset.
Pr
When the hot tub is
first activated, it
goes into Priming
mode.
The Priming mode runs for up to four
minutes and then the hot tub begins to heat
and maintain the water temperature in
Standard mode.
- - F
Temperature
unknown
After the pump has been running for two
minutes, the temperature will be displayed.
Summary of Contents for ML 736
Page 18: ...Page 16 For HELP call 727 573 9611...
Page 19: ...Page 17 For HELP call 727 573 9611 Figure 12 GS510SZ Board Diagram for All EXPORT Models...
Page 41: ...Page 39 For HELP call 727 573 9611 ML 736 Callouts...
Page 43: ...Page 41 For HELP call 727 573 9611 ML 844 Callouts...
Page 44: ...Page 42 For HELP call 727 573 9611 N o t e s...
Page 46: ...6101 45th St N St Petersburg FL 33714 727 573 9611...
