Heat Siphon® Swimming Pool Heat Pumps
D & DX Owner’s Manual
Made in Latrobe Pennsylvania
Since 1983 U.S.A.
ALL RIGHTS RESERVED © 2007 by United States ThermoAmp Inc. • 1223 Heat Siphon Lane • Latrobe PA 15650 • 724 537 3500 • 800 447 9667
General information:
The Player will typically display a repeating loop of information usually containing the current pool temperature and the current setpoint.
At times the display will show a timer or error codes if conditions exist, but mostly you will come to recognize the Temp and Setpoint loop.
One of the timers that you will see is the Off timer. This is a 240 second (4 minute) countdown that will occur anytime the Heat Siphon
turns off either in the background or shown directly on the display. This is a safety feature that allows the internal pressures to equalize before
restarting. You will see it as, “OFF, 239, 238, 237, 236, OFF, 234, 233” etc.
Another timer you will see is the FLO timer. This is a 15 second timer that begins when the water pump turns on. This is to give the water
pump time to push all the bubbles through the system and achieve good water flow before the Heat Siphon turns on. You will see it as, “FLO,
14, 13, 12, 11, FLO, 9, 8, 7, 6” etc. Modes: (POOL, SPA, AUTO PIC, OFF)
At any time and from any mode, press BOTH arrow keys at the same time and the display will begin blinking showing the current mode.
You now have 3 seconds to press the up (or down) arrow. You can continuously press the up (or down) arrow to scroll through the four different
modes. The modes are: POOL, SPA, AUTO PIC, and OFF. Three seconds after your last keypress the mode will be accepted with an audible beep.
Notice that the lights will change to match the mode.
POOL mode: changing setpoint
The Temp/Setpoint display loop for Pool mode is: “POOL 78F; HEAT SET 80F” You can tell you are in POOL mode by the green light and
the use of the word “POOL” in the water temperature display, ex. “POOL 78F”. “HEAT SET 80F” tells you the pool thermostat is set for 80F.
At any time you can press the up or down arrow key once, the current setpoint temperature will blink, at that point press either the up
arrow to increase the setpoint or the down arrow to decrease setpoint. Three seconds after your last keypress, the new setpoint will be accepted
with an audible beep. You can confirm your new setpoint by watching the Temp/Setpoint display loop. The Heat Siphon will maintain this
temperature within a degree and a half.
SPA mode : changing setpoint
The Temp/Setpoint display loop for Spa mode is: “SPA 100F; HEAT SET 102F” You can tell you are in Spa mode by the yellow light and
the use of the word “SPA” in the water temperature display, ex. “SPA 100F”. “HEAT SET 102F” tells you the spa thermostat is set for 102F.
What is AUTO PIC?
Auto Pic is a way for the Heat Siphon to decide, on its own, what body of water you are heating (pool or spa) and then heat that body of
water to the correct setpoint (pool setpoint or spa setpoint). This is a convenience feature and the goal is to allow you to simply turn your pump
off, switch your valves to pool or spa, and turn your pump back on. The Heat Siphon will do the rest.
How does AUTO PIC work?
Any time the Heat Siphon sees the water pump turn on, the Heat Siphon tries to decide what body of water it is heating. It does this by
turning on and heating the water for 5 minutes. If the heat up rate is fast then it will assume it is heating a spa and heat to the SPA SETpoint.
