Emerson Sensi ST75 Installation Manual page 16

SYMPTOM
Furnace (Air
Conditioner)
Cycles Too
Fast or Slow
" Call for
Service"
appears on
the screen
16
POSSIBLE CAUSE
The location of the
thermostat and/
or the size of the
Heating System
may be influencing
the cycle rate
1. Heating or Cooling
system is not
able to heat/
cool the space to
within 5 degrees
of the setpoint
within 2 hours
2. If "--" is displayed
for the Room
Temperature,
a replacement
thermostat
is needed
3. None of the
buttons operate
on the thermostat
CORRECTIVE ACTION
Digital thermostats provide precise
control and cycle faster than older
mechanical models. The system turns
on and off more frequently, but runs
for a shorter time. If you would like
to increase cycle time, choose Slow
for the Cycle Rate in the Sensi app.
1. See corrective action for "No Heat"
See corrective action for "No Cool"
2. Replace thermostat
3. Make sure keypad lockout is
not turned on. If it's OFF, try
resetting the thermostat.
Reset: Turn the power to your
system off, wait 5 seconds
and turn it back on.