Defrost Cycle - Pentair UltraTemp-E Serie Guide De L'installateur

Temperature Scale - C˚ or F˚
The control board can display temperatures in either degrees Fahrenheit or Celsius. The temperature scale in use can
be changed from the Operator Setup Menu Tree as described below:
1 Press the UP and DOWN arrows simultaneously. The Language Selection screen should be displayed.
2 Then press the MENU SELECT button repeatedly until the Temperature Scale screen is displayed.
3 Press the UP or DOWN arrows to toggle between the Fahrenheit and Celsius options. The last option shown on the
display will become active.
Water Temperature Offset
The control board provides the ability to increase or decrease the measured water temperature by 2 degrees.
To change the temperature offset:
1 Press the UP and DOWN arrows simultaneously.
2 Press the MENU SELECT button repeatedly until the Temperature Offset screen is displayed.
3 Press the UP or DOWN arrows to select the
active.
Locking the Control Panel
Heat pump control panel lock-out – To prevent unwanted adjusting or manipulating of the heat pump settings, the
control panel can be locked. Once locked, if any button is pressed, the display will read:
HEAT PUMP
CONTROLS LOCKED
• To activate the control panel lockout, press the MENU SELECT and POOL/SPA buttons simultaneously.
• To unlock the control panel, press the MENU
SELECT and POOL/SPA buttons simultaneously.

Defrost Cycle

The heat pump may enter a defrost cycle if air temperatures are around 10° C (50° F).
The defrost cycle initiates when the evaporator sensor detects refrigerant temperature below the defrost set point.
At this time, the heat pump compressor stops. The heat pump evaporator fan will continue to run, and the reversing
valve is activated. This wil heat up and actively defrost the evaporator.
Note: as the evaporator is heated during defrost, production of water vapour might be observed as well as
increased production of condensation water .
If the temperature sensor detects a temperature above 7° C (44° F ), the compressor will restart after the 15 minutes.
If not, the unit will shut down.
The efficiency of a heat pump decreases as air temperature decreases. For maximum efficiency, operate the heat
pump during the warmest time of day.
Starting and Stopping the Heat Pump
The heat pump is started and stopped with the ON/ OFF button.
1 Starting - With power supplied to the heat pump, press the ON/OFF button to start the heat pump. The ON light
should be lit.
2 Stopping -Press the ON/OFF button to stop the heat pump; the ON light will turn off. The screen shown below will
be displayed temporarily.
PENTAIR AQUATICS
HEAT PUMP OFF
desired offset. The last number shown on the display will become
15