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12
49-5000400 Rev. 4
On Board Diagnostics (RARWT_ _)
Fault Codes (RARWT_ _)
Heat-Pump Over Temperature:
In HEAT-PUMP modes, a flashing
HEAT-PUMP icon AND 99
°
F (99
°
C)
indicates that the indoor coil reached
a temperature above 135
°
F (58
°
C) and the compressor
was shut off.
Recommended to increase airflow by cleaning the filter
and opening vents.
Fault Codes
Display
Code
$ႇHFWHG
Sensor
Potential Cause
All
Models
F1 Indoor Coil Unplugged Sensor or Temp less
than -22°F (-30°C)
F2 Indoor Coil Shorted wires or temp greater
than 149°F (65°C)
Heat
Pump
Models
Dip
Switch 1
ON
F3 Outdoor Coil Unplugged Sensor or Temp less
than -22°F (-30°C)
F4 Outdoor Coil Shorted wires or temp greater
than 149°F (65°C)
F5 Outdoor Temp Unplugged sensor, or Dip Switch
1 set to “ON” for AC only model.
Temp less than -22°F (-30°C)
F6 Outdoor Temp Shorted wires or temp greater
than 149°F (65°C)
All
Models
F7 Thermostat
Room Sensor
Unplugged Sensor or Temp less
than -22°F (-30°C)
F8 Thermostat
Room Sensor
Shorted wires or temp greater
than 149°F (65°C)
F9
--
FC
Signal Wire Thermostat signal wire is
unplugged or shorted (Not
communicating to the main
control)
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