On Board Diagnostics (RGRWT_ _)
a temperature above 135
was shut off.
Recommended to increase airflow by cleaning the filter
and opening vents.
Fault Codes (RGRWT_ _)
Display
Code
F1
All
Models
F2
F3
Heat
Pump
F4
Models
F5
Dip
Switch 1
F6
ON
F7
F8
All
Models
F9
FC
49-5000928 Rev. 0
Heat-Pump Over Temperature:
In HEAT-PUMP modes, a flashing
HEAT-PUMP icon AND 99
indicates that the indoor coil reached
Fault Codes
Sensor
Indoor Coil
Indoor Coil
Outdoor Coil
Outdoor Coil
Outdoor Temp Unplugged sensor, or Dip Switch
Outdoor Temp Shorted wires or temp greater
Thermostat
Room Sensor
Thermostat
Room Sensor
Signal Wire
--
F (58
C) and the compressor
°
°
Potential Cause
Unplugged Sensor or Temp less
than -22°F (-30°C)
Shorted wires or temp greater
than 149°F (65°C)
Unplugged Sensor or Temp less
than -22°F (-30°C)
Shorted wires or temp greater
than 149°F (65°C)
1 set to "ON" for AC only model.
Temp less than -22°F (-30°C)
than 149°F (65°C)
Unplugged Sensor or Temp less
than -22°F (-30°C)
Shorted wires or temp greater
than 149°F (65°C)
Thermostat signal wire is
unplugged or shorted (Not
communicating to the main
control)
F (99
C)
°
°
13