Leisure Temp LT1000, Installation Manual

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Heat Pump Won’t Shut Off
ISSUE
The heat pump will not deactivate.
RESOLUTION
PLEASE NOTE
When the heat pump is set to off, the display will show the current water temperature
or no water flow indicator.
1. Confirm the correct mode has been set on the heat pump.
2. Confirm the heat pump has reached the desired temperature set on the thermostat. The heat pump will
continue to run until the set temperature is reached.
3. If the heat pump is using an external controller, it may not be set correctly. See the external controller's
manual.
Heat Pump Is Running, Not Heating
ISSUE
The heat pump is running. But the water is not heating.
RESOLUTION
1. If the heat pump is using an external controller, confirm it is set correctly.
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See operation manual for operating heat pump with an external controller.
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If the heat pump is still not running correctly with this device, contact the installer of the device or
the device’s manufacturer for further assistance.
2. Confirm heat pump mode is set to heat.
3. Confirm thermostat is set to the desired water temperature.
4. Confirm valves are positioned to heat the correct body of water (either the pool or the spa). If heating a
spa that overflows into a pool, confirm the spa is isolated when being heated (not flowing into the
pool).
5. Confirm heat pump is transferring heat into the water.
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Measure the temperature of air discharge coming out of the heat pump fan. If discharge air is
between 8° to 10° F (4.4° to 5.6° C) colder than the outside ambient air, the heat pump is moving
heat into the water.
6. If an error code is displayed, diagnose and correct cause of code.
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See " Fault Codes " on page 56.
7. Confirm that the filter pump has a sufficient run-time. The heat pump will not run (or heat the
water) without water flow.
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See " Heating Recommendations " on page 66.
8. If heating a spa, deactivate air blower or venturi (if equipped) to allow for quicker heating times. For
pools, deactivate water features, such as slides, waterfalls, or fountains to allow water to retain heat.
Use of a liquid pool blanket product can also compensate for excessive heat loss.
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