Thermo-Serv 9901i, 9915i, 9920i Fan Cycles, Intermittent Fan, What do the LEDs below the display mean?

Fan Cycles
From the main screen press MENU.
Use the UPor DOWN buttons until FAN is highlighted. Press SELECT.
Use the UPor DOWN buttons to highlight FAN settings.
Press SELECT.
Intermittent Fan
INTERMITTENTwill turn the fan on for a set period of time for a
given interval.
The thermostat will cycle the fan on for the set ON cycle. The fan will remain off for the set OFF cycle.
If the HVACsystem runs for a longer period than the ON cycle, the OFF cycle will start counting over
again when the system shuts off.
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MONDAY 3:29 PM
78.1
HOLD TEMP MENU
COOL
FAN AUTO
SET AT 78
MENU
DAY / TIME
FRESH AIR
HEAT / COOL
FAN
HOME SELECT
MAIN MENU SELECT
FAN MENU
FAN SETTINGS
FAN PROGRAM
FAN MENU SELECT
ON TIME5MIN
INTERMITTENT FAN
OFF TIME20MIN
FAN MENU SELECT
FAN SETTINGS
ON
AUTO
INTERMITTENT
Three choices are available:
ONwill turn the fan on continuously.
AUTOwill turn the fan on only
when there is a call for heating
or cooling.
INTERMITTENTwill turn the fan
on for a set period of time for a
given interval. Highlight the choice
you desire and press SELECT.
What do the LED’s below the display mean?
The LED’s indicate when the HVAC system is activated. With a call for heating or cooling, the HEATor COOL LED will be illuminated.
TheAUX LED indicates the second stage of heating or cooling.
The CHECK LED is used only on the 9920i. It indicates the heat pump should be serviced by a qualified technician.
The EMER LED indicates that the emergency heat is turned on.
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