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TROUBLESHOOTING
To verify that your heater is heating your pool, place your hand above the unit. Cool air will blow out of
the top of the heater, this occurs when the heating indicator is on. The water returning to the pool will be
between 3° to 5° warmer* than the overall pool water temperature. There will also be water draining out
of the base of the unit after 10 minutes of run time. *
depending on model, ambient conditions, and water flow rate.
If you believe your heater is not functioning properly, see the troubleshooting guide below.
If you are unable to resolve the issue, call our warranty service department at (941)505-1600.
CONDITION
POSSIBLE CAUSE
POSSIBLE SOLUTION
Control Displays
"HP, HP3, or HP6
”
Water flow restriction, valve is
turned restricting flow.
Clean pump and filter. Adjust water
valves. If problem persists, call
factory for service.
Control Display flashing
"dSd"
Defrost sensor malfunction or not
connected.
Call factory for service.
Control Display flashing
“PSd”
Water sensor malfunction or not
connected.
Call factory for service.
Control Display flashing
“FLO”
Pool pump is not on, water flow
restriction, or incorrect valve
position.
Turn pool pump on. Ensure that
skimmer basket, pump strainer
basket and pool filter are all clean.
Ensure valves are set properly.
Control Display is flashing
“FS”
Or
“FS1, FS2, FS3, FS4”
Air temperature is too cold for
heater operation.
Wait until air temperature
warms up to at least 50
°
F.
Every 15 minutes heater will cycle on
for 2 minutes and determine if the
temperature is warm enough.
Control Displays
“FS5”
Air temperature too cold after 5
“FS” signals.
When air temp raises above
50
°
F
press any key on the control. Built
in
one-hour standby mode if nothing is
pressed. If still too cold, 15 min FS
cycles will resume.
Control Display Flashing
"LP” or “LP3”
Low refrigerant, or faulty low-
pressure sensor.
Call factory for service.
Pool is heating slowly or
not getting up to
temperature.
Low or restricted water flow through
the heater. It is cold outside. Pump
timer is not set for a long enough
run time. Pool is not being covered.
High wind speed over pool. Pool
area shaded.
Clean or replace filter. Inspect and
clean pool pump. Adjust water
valves. Use a pool cover. Construct a
wind break around pool. Set pool
pump timer longer. Call factory for
service.
Water is running out of the
bottom of the heater.
The heater produces up to 3 gallons
per hour of water condensing from
the evaporator coil. Internal water
leak.
Shut the heater off for several hours
and leave the pool pump running. If
the water is still running out, call
factory for service.
