Analog Timerstat Pro Section; Still Keeping It Simple; Easy To Upgrade To Digital; Timerstat Pro Error Codes - Status Led - Heat Siphon Z Series Owner's Manual

HEAT SIPHON

1.1 Still Keeping it Simple

The NEW TIMERSTAT PRO Analog Models of Heat Siphon are basically the same as the digital models from a
heat pump component standpoint, however, the electronic TimerStat Pro controller is designed as a modern version
of Heat Siphon's very first models produced in the 1980's.
In keeping with these original Analog units, the controls were kept as simple as possible - ONE KNOB - which
lead to a more reliable simpler to repair and troubleshoot heat pump. The New Timerstat Pro also has just ONE
KNOB - albeit a stainless steel version and just one Status Light right below it, which is a tri color RED - GREEN
-ORANGE LED.
The controller monitors the same Low & High Refrigerant Pressure Switches and Water Flow Switch, and it uses
the same very accurate and extremely fast response Titanium Temperature Probe as the sophisticated Heat Siphon
Player Controller on all Digital Heat Siphon Models but simplifies the wiring by using only two control loops - one
for the temperature probe and flow sensor and one for the refrigerant switches.
This approach is less expensive as well as simpler to build and allows it to monitor the heat pump refrigeration
system separately from the water flow and temperature which allows just one status LED to provide improved &

1.3 Timerstat Pro Error Codes - Status LED

Once power is applied to the Heat Siphon, the LED will tell you a lot of information depending it what color it
is and whether or how it is blinking. Here is the basic sequence of lights :
• NO LIGHT - POWER OFF
• ORANGE ON SOLID- POWER ON -no water flow - waiting for pool pump
®

Analog TimerStat Pro Section

TimerStat Pro - 50
TimerStat Pro Section
refined error codes.
1.2 Easy to Upgrade
to Digital
The Timerstat Pro circuit
board and Knob are also
housed in the digital pock-
et using the same door and
wire harness as the Digital
Player controller. In fact this
was designed into it to make
upgrading to digital as easy
as switching doors. You just
unplug the wire harness on
the Timerstat Pro, plug in the
Digital Player Harness and
change one wire jumper in the
control box.