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17
TROUBLE SHOOTING
This is a self-diagnostic control system. The system will
automatically display an alphanumeric symbol if a problem
is detected.
No display at topside
No display at topside
- Check that the topside is correctly plugged into spa
pack.
- Check the breaker
- Check that connection to main board is clean and
sound
Display flashes "th1/39" on system start up
Display flashes "th1/39" on system start up
- Check that the temperature sensing probe connection
to main board is clean and sound
Display flashes"th2/curr
Display flashes"th2/curr
ent temperatur
ent temperatur
e" on system
e" on system
start up
start up
- Check that the temperature sensing probe connected to
the main board is clean and sound
Note: a new temperature-sensing probe may be needed for the above
2 points.
Display flashes "th2/39" on system start up
Display flashes "th2/39" on system start up
- This indicates that both thermisters are detecting spa
water temperature of less than 39° F/4° C or they are
both disconnected (open). The pump will run in this
condition.
Display flashes "OH" (OVER HEA
Display flashes "OH" (OVER HEA
T)
T)
- This indicates that the spa water temperature is over
112° F. The system should shut down in this state and
will re-start automatically when the water cools below
112° F
Display flashes "hot" (OVER HEA
Display flashes "hot" (OVER HEA
T)
T)
- This indicates that the heater body is over 112° F. The
system should shut down in this state and will re-start
automatically when the water cools below 112° F.
Display flashes "HL" (HIGH LIMIT)
Display flashes "HL" (HIGH LIMIT)
- This indicates that either the heater or the spa has
reached 118° F or higher. The system will not re-start
automatically. To re-start the system, the water temper-
ature must be below 112° F and the heater key at the
topside control must be pressed.