T500 Series Non-Programmable Thermostats Product/Technical Bulletin
13
C
ommissioning
The thermostat normally displays room temperature
and mode of operation (whether cooling
or
heating
is currently on).
Table 7: LED Indicators (T500MSN-1,
T500HPN-1 only)
LED Position Function
Left
Indicates filter needs
changing. Controlled by
external switch on LED 1.
Display of the filter symbol can
be enabled; see Table 2 and
Table 3.
Center
(T500HPN-1 only) Indicates
when highest stage heat is
activated. Internally controlled.
Right
Indicates a fault. Controlled by
external switch on LED 2.
Display of the wrench symbol
can be enabled; see Table 2
and Table 3.
T
hermostat Operation Overview
Outdoor
Day/Night
Mode
Fan
LEDs (T500HPN, T500MSN only) indicate
system activity or problems (See Table 1).
Used to display outdoor
temperature (optional).
Used to alternate between day
and night setpoints.
Used to run fan
continuously.
Used to select heating or
cooling mode of operation
Used to increase/decrease values
or change between Degree C or F.
Face
Figure 16: T500 Non-Programmable Pushbuttons
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