30
UltraTemp
®
Heat Pump Installation and User’s Guide
Autoset
Autoset is a feature that allows the heat pump to automatically turn on your water circulation pump
at predetermined time intervals after the water circulation pump shuts off. To utilize this feature, the
water circulation pump must be wired in parallel with your mechanical time clock using the auxiliary
relay supplied in the high voltage power panel of the heat pump.
For example, if your pool water circulation pump is wired properly with the time clock through the
heat pump, have the heat pump control board programmed with a pump start time interval of 4 hours,
have the AutoSet feature enabled, and you wish to maintain your pool to 80° F., this is the sequence
of events that will happen.
1. If your mechanical time clock is set to shut off at 9:00 p.m., once the water circulation pump shuts
off, the heat pump will display a countdown window.
2. The heat pump will continue to countdown in hours and minutes.
3. Once the 4 hours has expired, at 1:00 am, the control board will energize the internal contactor in
the heat pump to turn on your water circulation pump.
4. The heat pump will sense water temperature then determine if it needs to continue to circulate water.
If the pool temperature has fallen below your set point, 80 degrees for this example, the heat pump
will turn on and begin heating the pool. Once the pool temperature has reached its set point, 80
degrees, the heat pump will shut off and will also shut off the water circulation pump.
5. If after the water sensing time, the heat pump detects the pool water is above the set point, 80 degrees
for this example, it will shut off and shut the water circulation pump off also.
6. At the time the water circulation pump shuts off, the heat pump will again reset and begin the
countdown interval again and display the following window.
7. The heat pump will continue this cycle every time the water circulation pump is shut off.
8. Once the time clock turns on in the morning, the heat pump will stop the AutoSet feature and resume
normal operation.
PUMP START DELAY
REMAINING = 4:00
PUMP START DELAY
REMAINING = 4:00