Robertshaw 300-224 Installation And Programming Instructions page 10

Single or Multistate
For equipment with a single compressor (2 heat/1 cool
229}, switch to single stage. For equipment with two compressors (3 heat/2 cool for 330-227 or
2 heat/2 cool for 300-229), switch to multistage.
(300-226, 300-227, 300-229)
LED #1
Switch ON will energize the LED light pipe at the top of the thermostat plus the filter indicator on
the display. This indicates the filter needs to be changed.
(300-226, 300-227, 300-229)
LED #2
Switch ON will energize the LED light pipe at the top of the thermostat plus the wrench indicator
on the display. This indicates service is
FEATURES
Remote Sensor FIS1 — R52 - RS-IN
The thermostat is designed to accept the remote sensor (10-528) which will allow you to locate
your thermostat in an area away from view.
LED Auxiliary Heat Indicator
Your thermostat is equipped with an LED that indicates when the system has engaged auxiliary
heat mode. It is the center (red) LED.
Add-On Heat Pumps
Your thermostat is equipped to enhance the performance of an add-on heat pump.
In most applications, the thermostat will perform the function of a fossil fuel kit.
To select Add-On, place switch (10
mostat will turn off the compressor with a call for AUX heat. When the switch is set to
normal, the thermostat allows the compressor and the AUX heat to be on simultaneously.
(300-227, 300-229)
required.
(300-226, 300-227)
300-22 7)
(300-226,
for 300-226,
for 300-227 or 1 heat/1 cool for
for 300-227)
#5
to the ON position. The ther-
10
300-