Heat Pump Won't Shut Off; Heat Pump Is Running, Not Heating - Aquacal Water Source WS03 Installation Manual

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.
Contact the installer of the device or the device's manufacturer for further assistance.
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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.
Measure the pool-side and source-side discharge water coming out of the heat pump.
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See "Adjusting Water Flow Using ΔT (Delta-T)" on page 61.
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6. If an error code is displayed, diagnose and correct cause of code.
See "Fault Codes" on page 89.
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7. Confirm that the filter pump has a sufficient run-time. The heat pump will not run (or heat the
water) without water flow.
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, such as an Aqua Blanket
heat loss.
Page - 98
, can also compensate for excessive
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