Robertshaw Deluxe Programmable - Manual (Page 10)

Single or Multistate (300-227, 300-229)
For equipment with a single compressor (2 heat/1 cool for 300-227 or 1 heat/1 cool for 300-
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.
LED #1 (300-226, 300-227, 300-229)
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.
LED #2 (300-226, 300-227, 300-229)
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 required.
FEATURES
Remote Sensor RS1 – RS2 – RS+V
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 (300-226, 300-227)
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 (300-226, 300-227)
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 (#3 for 300-226, #5 for 300-227) to the ON position. The ther-
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.
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