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• Is water condensing on the evaporator and internal copper pipes? This is also evidence of
heat removal from the air. When the air is cool with low humidity, condensation may not be
evident.
• How long has the unit been operating? During initial pool heating in cold weather, it may
require a week to elevate the water temperature to a comfortable level. Normally, it takes
about 4 days.
How many hours per day is the unit operating? Remember that the heat pump only
operates while the pool pump is running. Set the time clock to permit 24 hour per day
operation. After the desired temperature is reached, return the unit to normal operation
of 8-10 hours per day.
NOTE: If the pool pump and heat pump shut OFF before the water temperature is
raised to the desired level, you must lengthen the running time of both. To do this,
reset the time clock dial for the longer running time, or manually operate the pump
with the timer override switch. Since the heat pump capacity and efficiency are both
greater at higher ambient air temperatures, run time should be set to take
advantage of all daylight hours, when the air is generally warmer.
• Is airflow through the unit being obstructed? Restrictions such as shrubbery, tall grass, dirty
coils, or any other obstruction to airflow will reduce performance.
• Is the pool blanket/cover being used? Unblanketed pools can lose up to 10 degrees per night
compared to 4 degrees or fewer when a blanket is used. Without a blanket, the total heat
gained during the day can be lost overnight.
• Are rapid heat losses occurring in some other way, such as high wind, spillage, rainfall, flow
through solar panels at nights, or a high water table?
B. UNIT IS NOT RUNNING
• Is the control panel Power lamp ON? If not, the circuit breaker may be shut OFF or tripped.
Reset the breaker by switching it OFF, then back ON. Verify that the breaker is set and
operating properly before calling for service.
• Are the thermostat setting and the Pool/Spa setting correct? Verify that the temperature has
been properly set on the thermostat, and that it is higher than the current water temperature.
At this time all three lamps should illuminate and the fan should start to run.
•Is the
Water Flow lamp ON? This lamp will turn OFF if not enough water is flowing
through the unit. Improperly positioned valves or a dirty filter could decrease the flow of
water required for efficient operation. If this lamp is OFF, but you can feel normal flow at
the pool returns, check the water valves or settings.
• Have you waited approximately 5 minutes for the time delay? After the unit has been
running and then shut OFF for any reason, there is a delay before operation can begin again.
•Is the Heat Demand lamp ON? If not, then the thermostat setting is not higher than the
temperature of the water. Raise the thermostat setting.
NOTE: The heat pump will not run when the Remote position is selected on
the Pool/Spa selector switch and there is no remote control system attached.