Table 3. Troubleshooting. (Continued)
Symptom
Possible Cause
Action
System on
indicator—
(Si
for heat;
for cool—
is lit, but no warm
or cool air is
coming from the
registers.
Heating/cooling equipment
turns on the fan when the
equipment has reached the
preset time or temperature.
Wait a minute after seeing the (S)
or
and then check the registers.
Heat Pump Fault
Monitor LED is
lighted.
The heat pump signaled the
thermostat to indicate a
problem.
Move the System switch to Em. Ht setting
(heat pump only). See Heat pump
Operating Instructions or call your local
heat pump dealer or Energy Utility for
assistance.
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Содержание EnergyPro T8665C
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