PS4000/PS5000 Touchscreen Programmable Thermostat
Special Heat Pump Operation
Heat Pump Indication (Requires
24V AC Common Connections)
“E5” indication is located in the screen of the
thermostat. It is only visible when lighted.
When the L terminal is wired to an
equipment monitor, this is operational in the
HEAT, OFF, COOL or AUTO positions.
When the “E5” is illuminated, call for service.
See Figure 31.
Figure 31. L terminal switch to R (power)
side of system transformer.
Heat Pump Emergency Heat LCD
Indication (Requires 24V AC
Common Connection)
The thermostat indicates the “E5” indicator when
PS5000 ONLY:
the thermostat is in the Emergency Heat mode.
The “E5” is located in the LCD screen of the
thermostat. It is visible only when on. When
the thermostat is in the EMER system mode,
the L terminal is continuously energized and the
“E5” is displayed.
Heat Pump Temperature Lockouts
Dual Fuel Heat Pump and Outdoor
Temperature Sensor
In this operation, there is no external fossil fuel
PS5000 ONLY:
kit (dual fuel kit) installed; the thermostat
controls this function.
86
TUE
AM
Set To
SYSTEM
HEAT
MORE SCHED HOLD CLOCK
SCREEN
AUTO
FAN
