Service & Parts Manual (2019, 2020, 2021, 2022)

58 PB
FAULT
CODE
PROBLEM CONTROL BOARD'S ACTION
1 Front Panel Button Stuck For More
Than 20 Seconds
Continue to monitor for "OPEN" (Unstuck) switch. Do not process
switch input. ENSURE FRONT COVER DOES NOT DEPRESS
BUTTONS
3 Indoor Temperature Sensor is Open
or Shorted
Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues
to operate
4 Indoor Coil Temperature Sensor is
Open or Shorted
Control Board sets temp to a default of 40°F. Override sensor.
Unit continues to operate.
5 Outdoor Coil Temperature Sensor is
Open or Shorted
Sets temp to 20°F. Override sensor. Continue operation. Use Elec
Heat if available for HEATING. If not available use HEAT PUMP if
outdoor temp allows.
6 Outdoor Coil > (greater than) 175 F Shut down for 5 min.
7 Indoor Coil < (less than) 30 F for 2
consecutive minutes
Turn compressor off. When coil temp reachs 45°F resume
operation after lockout time.
8 Unit Cycles > (grater than) 9 Times
per hour
Continue operation. Continue to monitor. Take no action. Log
Only.
9 Unit Cycles < (less than) 3 Times per
Hour
Continue operation. Continue to monitor. Take no action. Log
Only.
12 Discharge Air > (greater than) 185 F Shutdown electric heater until temp is 100°F. Resume
operation.
14 Discharge Air Temperature Sensor
is Open or Shorted
Override Sensor. Set temp to 75°F. Continue to monitor. Set
error code 14 ON.
16 Temperature Beyond Operating
Limits
Ambient temp < (less than) 0°F and ambient temp > (greater
than) 130°F. Set error code 16 ON. When cleared return unit to
normal.
22 Outdoor Coil Temperature < 30 F
for 2 consecutive Minutes
Unit will use electric heat to satisfy heating demands until temp
is greater than 45°F. Unit must be a Heat Pump with electric
heat.
23 Frost Protection. Unit will run active defrost for up to 6 minutes when Heat Pump
run time is greater than 60 minutes and outdoor coil temp is 26 F
or less.
TROUBLESHOOTING
Diagnostic Codes
Figure 710 (Fault Codes)