Trouble Shooting Tests:
All measurements taken with a voltmeter set to read volts AC. One
lead of the voltmeter should be on the neutral (white wire) of the
thermostat. The voltmeter should read 120VAC to 277VAC when the
other lead is connected to the wire colors stated below.
A. Black (control feed): this wire will have power at all times when
power is applied to the thermostat.
B. Orange (load feed): In a two pipe fan coil with aquastat configu-
ration this wire will have power during a heating or cooling call.
Inany other configuration this wire will have power at all times
when power is applied to the thermostat.
C. Red (heat): In a heat pump configuration this wire will have power
during an auxiliary heating call.
Ina two pipe fan coil with aquastat configuration this wire will have
power during a heating call if the aquastat is set to heating.
In any other configuration this wire will have power duringaheating
call.
D. Blue (cool/compressor): In a heat pump configuration this wire
will have power during a first stage heating or cooling call.
Ina two pipe fan coil with aquastat configuration this wire will have
power during a cooling call if the aquastat is set to cooling.
In any other configuration this wire will have power during a cooling
call.
E. Yellow (low fan): this wire will have power at all times when the
thermostat is calling for low fan.
F. Yellow with black stripe (medium fan): In a heat pump configuration
this wire will have power at all times when the thermostat is calling
for high fan.
Inany other configuration this wire will have power when the
thermostat is calling for medium fan.
G. Yellow with red stripe (high fan/reverse valve): In a heat pump
configuration this wire will be the reverse valve and will have power
ifthe thermostat is set to a type “O” and in a cooling call or if the
thermostat is set to a type “B” and in a heating call.
Inany other configuration this wire will have power when the
thermostat is calling for high fan and set for three speed operation.
4
Diagnostic Mode:
Press and hold the "up" and "down" buttons
together until "DIAG" appears on the display.
Release the buttons.
Diagnostic mode will alternately display
setpoint and room temperature every 5 seconds.
AUTO
DIAG
◦
ROOM
AUTO
DIAG
◦
The room temperature is displayed "ROOM".
Both setpoint and room temperature displays
will indicate the fan speed activity and "DIAG".
ECON
◦
Diagnostic mode can be deactivated by changing
the °F/°C slide switch.
Room temperature must be below the Comfort Heating Limit
Press “UP” or “DOWN” button to set temperature.
Cooling: Cooling and low fan turn on automatically when
temperature rises 2°F above setpoint. Fan will switch to medium speed
if temperature continues to rise to 2°F above setpoint. Fan will switch
to high speed if temperature continues to rise to 4°F above setpoint.
High fan will turn off when temperature changes to 3°F above setpoint.
Medium fan will turn off when temperature changes to 1°F above
setpoint. Cooling will turn off when temperature drops 0.4°F below
setpoint. After first cooling call, cooling and low fan will turn on
automatically when temperature rises 0.4°F above setpoint. Cooling
will turn off when temperature drops 0.4°F below setpoint.
Heating: Heating and low fan turn on automatically when
temperature drops 2°F below setpoint. Fan will switch to medium
speed if temperature continues to drop to 2°F below setpoint. Fan will
switch to high speed if temperature continues to drop to 4°F below
setpoint. High fan will turn off when temperature changes to 3°F below
setpoint. Medium fan will turn off when temperature changes to 1°F
below setpoint. Heating will turn off when temperature rises 0.4°F
above setpoint. After first heating call, heating and low fan will turn on
automatically when temperature drops 0.4°F below setpoint. Heating
will turn off when temperature rises 0.4°F above setpoint.
Heat Pump: If system is set up to function as a heat pump the reverse
valve (yellow with red stripe wire) will engage with the compressor
during cooling if the thermostat is set to type ”O”. The reverse valve
(yellow with red stripe wire) will engage with the compressor during
heating if the thermostat is set to type “B”.
The reverse valve will de-energize 3 minutes after a compressor call.
Automatic Changeover: When thermostat is currently in cooling mode
and the temperature drops to 2°F plus the differential below the setpoint,
the mode will automatically switch to heating. When thermostat is
currently in heating mode and the temperature rises to 2°F plus the
differential above the setpoint, the mode will automatically switch to
cooling.
Motion Detection: If the thermostat is equipped with an onboard
motion detector or is using a remote motion detector use programming
parameters Setback Ramping (Sbr) to Economy Heating Limit (EH).
See page 3 of programming instructions to set up function and time
delays. If using a motion detector with a door switch, see Entry Door
Switch (Ed) below. Otherwise see Without Entry Door Switch.
Entry Door Switch (Ed): When the door is opened, the thermostat
will go into a temporary occupied mode. If, after a period of time
defined by the Open Door Timer (Odt), no motion is detected the
thermostat will go into unoccupied mode. If Setback Ramping (Sbr)
is disabled, the thermostat will now be controlled by the Economy
Cooling Limit (EC) or the Economy Heating Limit (EH). If Setback
Ramping (Sbr) is enabled, the thermostat will ramp back to the Economy
Cooling Limit (EC) or the Economy Heating Limit (EH). If motion is
detected at any time the thermostat will latch into occupied mode and
remain there until the door is opened again.
Without Door Switch: If, after a period of time defined by the Ramping
Setback Timer (rSt), no motion is detected the thermostat will go into
unoccupied mode. If the Setback Ramping (Sbr) is disabled, the
thermostat will now be controlled by the Economy Cooling Limit (EC)
or the Economy Heating Limit (EH). If Setback Ramping (Sbr) is
enabled, the thermostat will ramp back to the Economy Cooling Limit
(EC) or the Economy Heating Limit (EH). If motion is detected at any
time the thermostat will return to occupied mode.
